Settings — Nixt Mail docs

This page describes how Settings works and lists every setting, section by section, with its choices and its default.

Open Settings

Press ⌘, (Ctrl+, on Windows and Linux).
Choose the gear button at the foot of the sidebar (tooltip Settings).
On macOS, choose Nixt Mail › Settings…. On Windows and Linux, choose File › Settings….
On a window between 700 and 1099 pixels wide, choose Settings at the foot of the module rail.

Settings opens on General — or on Calendar if you open it from Calendar. Help › Keyboard Shortcuts, or ?, opens it on Keyboard, and Check for Updates… opens it on Updates. Links elsewhere in the app, such as Always… beside a message’s withheld images, open it scrolled to the setting they name.

To close Settings, press Esc, choose × (tooltip Close settings), or click outside it. Nothing is lost: every choice is saved as you make it.

How Settings is laid out

On a wide window, Settings shows a column of sections on the left and the chosen section on the right. Sections are grouped:

Group	Sections
NIXTOFFICE	General, Appearance, Notifications
MAIL	Accounts, Message list, Reading, Composing, Signatures, Rules, Out of office, Sync and offline
CALENDAR	Calendar
SYSTEM	Privacy and security, AI and services, Keyboard, Updates

Each section’s heading is followed by the question it answers, and its settings sit in titled cards. Each setting shows its name, a line saying what it does as it is set now, and its control. Some settings appear only when they apply — the delay choices under Mark as read, for example, appear only with After a moment.

On a narrow window, or at a large text size, Settings fills the screen and shows one thing at a time: first the list of sections, each with its question, then a section on its own page. Use the back arrow (tooltip All settings) to return to the list.

Find a setting

Type in Find a setting at the top of the section list.
Matching settings are listed under SETTINGS, each with its section, and matching sections under SECTIONS.
Choose a setting to open its section scrolled to it; the setting is briefly highlighted. Press Return to open the first result.

Search matches each word you type, in any order, against a setting’s name, its description and everyday words for it: “dark theme” finds Theme, and “reply quote” finds Quote in replies. Longer words tolerate a typo — a letter missing, extra, wrong or swapped — but near matches are shown only when nothing matches exactly. When nothing matches at all, the list says Nothing matches that.

Press Esc to clear the search.

See what you have changed

A setting you have changed shows a third line: Changed · shipped as its default, followed by Put back. Choose Put back to return that setting to its default.
Each section in the list shows how many of its settings are changed.
When anything is changed, a line under the search box says, for example, 3 changed. Choose it to list every changed setting under CHANGED, each with its section and how Nixt Mail shipped it — such as Appearance · shipped as Comfortable. Choose Show all sections to go back.

Restore defaults

One section

Open the section.
Choose Restore defaults at the top right. On a narrow window it is a round-arrow button. Sections with nothing to restore, such as Rules and Out of office, have no such button.
The dialog Restore defaults in the section ? names the changed settings that will go back, and says Nothing else changes.
Choose Restore defaults, or Cancel.

A snack bar says, for example, 2 settings in Reading restored. If nothing in the section has changed, the button is greyed out and its tooltip says Everything in the section is as Nixt Mail shipped it.

Every setting

Open Settings › General.
Under Your settings, choose Reset all settings. Its tooltip says Your accounts, mail, rules and signatures are untouched.
The dialog Reset all settings? names what will change and says your accounts, signatures, rules, calendar accounts and mail are untouched, and so are the app lock, offline mail and where things run.
Choose Reset all, or Cancel.

A snack bar says Settings are back to their defaults. — or, if nothing had changed, Every setting is already as Nixt Mail shipped it.

Restoring never touches your accounts, send-from addresses, signatures, templates, rules, the senders whose images always load, blocked senders, calendar accounts, mail, or anything kept for offline use. It also leaves alone four choices that would take something away if reset — App lock, Offline mail, Keep calendars offline and Where AI and services run — and two that belong to macOS rather than to Nixt Mail: Open at login and Default email app. Change those where they are.

Move settings to another computer

Export

Open Settings › General.
Under Your settings, choose Export settings.

Nixt Mail saves a file to your Downloads folder named with today’s date, such as nixtoffice-settings-2026-09-14.json, and a snack bar says Saved to Downloads as and the file name.

The file holds your choices in Settings only. It does not hold your accounts, passwords, signatures, rules, mail, the app lock, offline mail, the calendar’s offline copy, or where things run. It also leaves out choices that only make sense on this computer: the folder and module you last had open, hidden calendars, which account new mail and new events go to, and which accounts All inboxes leaves out.

Import

On the other computer, open Settings › General.
Under Your settings, choose Import settings… and pick the file.
The dialog Import settings? names the settings that will change and says Your accounts, signatures, rules and mail are untouched.
Choose Import, or Cancel.

A snack bar says, for example, 12 settings imported.

Message	What it means
That file makes the same choices as these settings already do.	Nothing would change.
That is not a Nixt Mail settings file.	You picked a different kind of file.
That file is not something Nixt Mail can read.	The file is damaged or not a settings file.
That settings file is damaged: it does not say which version it is.	The file has been edited or damaged.
That file comes from a newer Nixt Mail. Update this one to read it.	Update Nixt Mail on this computer, then import again.
Couldn’t save the settings file: followed by a reason	Export failed, for example because Downloads could not be written.
Couldn’t open that file: followed by a reason	The file could not be read.

A value in the file that this copy of Nixt Mail does not recognise leaves that setting as it is.

General

Whether Nixt Mail opens at login and on what, email links, how it writes the time, and how long a change can be taken back.

Starting up

Setting	What it does	Default
Open at login	Whether Nixt Mail opens by itself when you log in to this Mac. Turning it on asks macOS; if macOS wants you to allow it, the setting says so and points to System Settings › General › Login Items, where Nixt Mail can also be turned off. Needs macOS 13 or later.	Off
Start in	Which part of Nixt Mail is on screen when it starts: Mail, Calendar, or Wherever I left it.	Mail
Starting folder	Inbox, or The folder I had open last when Nixt Mail closed.	Inbox

Email links

Setting	What it does	Default
Default email app	Which app opens email links (mailto:) from other apps and websites. The setting names the app that does now; Make Nixt Mail the default asks macOS, which asks you to confirm. Once Nixt Mail is the default, an email link from a browser, a document or another app opens a new message in Nixt Mail with its address, subject and text filled in. If you are already writing a message, that one comes forward instead.	The system’s mail app

Dates and times

Setting	What it does	Default
Clock format	Times in mail and the calendar: Follow the system, 12-hour (9 AM) or 24-hour (09:00). The line under it shows how a time will look.	Follow the system
Date format	How mail from before today is dated: Sep 12, 12 Sep, or 2026-09-12 (numbers, year first). Mail from before this year includes the year.	Sep 12
Weekend	Which days are the weekend: Saturday and Sunday, Friday and Saturday, Friday only or Sunday only. The calendar’s Work week is the other days, starting the day after the weekend; Quiet weekends and the snooze choices This weekend and Next week follow it too.	Saturday and Sunday

Undo

Setting	What it does	Default
Time to undo	How long Undo stays on screen after you archive, delete or move mail, or change a calendar event: 6 seconds, 20 seconds, or Until I dismiss it. Sending has its own time to undo, in Composing.	6 seconds

Your settings

Button	What it does
Export settings	Saves your choices in Settings as a file in Downloads. Not your accounts, passwords, signatures, rules or mail, and not the app lock, offline mail or where things run. While the app lock and Unlock before erasing or exporting are on, it asks you to unlock first.
Import settings…	Reads a settings file and lists what it will change before changing anything.
Reset all settings	Puts every choice back as Nixt Mail ships, after asking. Accounts, mail, rules and signatures are untouched, and so are the app lock, offline mail and where things run.

Appearance

How Nixt Mail looks and moves.

Colours

Setting	What it does	Default
Theme	Match system, Light or Dark.	Match system
Accent colour	The colour of links, the selected message, choices and the main button: Blue, Teal, Green, Violet, Rose or Graphite. Each is checked to stay readable in light and dark.	Blue
Reduce transparency	Solid panels instead of frosted glass — lighter on the graphics card, and higher contrast to read.	Off

The window

Setting	What it does	Default
Command bar	Whether the line of commands for the mail in front of you is drawn above the window. Off leaves the menu bar, the message’s own header and the keyboard. See Command bar.	On

Layout

On a window wide enough for the list and a message side by side. A phone shows one at a time.

Setting	What it does	Default
Reading pane	Where an open message is drawn: To the right of the list, or Below the list (the list across the top, the message underneath).	To the right of the list
List width	How wide the message list is beside a message to its right: Narrow, Standard or Wide.	Standard

Text and spacing

Setting	What it does	Default
App text size	All the text in Nixt Mail — lists, menus, the sidebar, the calendar and Settings: Standard, Larger or Largest.	Standard
Row spacing	How many messages fit on screen: Comfortable (room around each row) or Compact (shorter rows).	Comfortable
Message text size	A message’s own text: Smaller, Standard, Larger or Largest, on top of the app text size. A sample sentence shows the size.	Standard
Message font	The font a message is drawn in where it does not choose its own: Sans-serif or Serif. Plain text in a fixed-width font stays fixed-width.	Sans-serif
Text size when writing	What you type in a new message or a reply: Smaller, Standard, Larger or Largest.	Standard

Animations

Setting	What it does	Default
Animations	Follow the system, Full animations or Reduced animations. Reduced stills the Autopilot map, animated sender logos and highlights; nothing you can act on is removed.	Follow the system

Notifications

What announces itself, how loudly, and when not to.

New mail

Setting	What it does	Default
When mail arrives	For mail on any connected account. Banner and system notification: a banner in the window, and a notification from the system. Banner only: a banner above the list, and nothing outside Nixt Mail. Nothing: nothing announces new mail.	Banner only
Clicking the new-mail banner	Open the new mail (the inbox, at the newest message it announced; its × closes it without opening), or Just close the banner.	Open the new mail
Dock icon badge	What the Nixt Mail icon in the Dock shows about mail that arrived while another window was in front: Number of new messages, A dot only, or No badge. The badge goes as soon as you come back to Nixt Mail.	Number of new messages
Notify me about	All new mail; Mail from people — system notifications for mail a person sent, not mailing lists, newsletters or automatic senders such as no-reply addresses; or People I have replied to — only for mail from someone you have replied to before. Everything else still arrives, and the banner in the window still says so.	All new mail
Accounts that announce new mail	One choice per connected account. An account you turn off still gets its mail, runs its rules and stays in All inboxes, but its new mail brings no banner, notification, sound or number on the Dock icon.	Every account
Quiet hours	Off, 21:00 – 07:00, 22:00 – 07:00 or 23:00 – 08:00. During quiet hours the system does not announce new mail; the banner in the window still appears.	Off
Quiet weekends	Makes the weekend quiet all day, as well as the quiet hours. The weekend is Saturday and Sunday unless General › Weekend says otherwise.	Off

System notifications are not shown while the Nixt Mail window is in front, because the banner is already saying the same thing. Several arrivals at once are announced as one notification, such as “3 new messages” with up to three senders.

Calendar reminders

Setting	What it does	Default
Calendar reminders	In the window, and from the system (the system holds the next week of reminders, so they arrive with Nixt Mail closed; with the app lock on they name no event), In the window only, or Not at all.	In the window only
How long a reminder stays on screen	A reminder at the bottom of the window stays Until I dismiss it, or for 12 seconds.	Until I dismiss it
Quiet hours include reminders	Keeps reminders from the system during quiet hours and quiet weekends, as they already are for new mail. A reminder still appears in the window if Nixt Mail is open.	Off

System notifications

Setting	What it does	Default
Notification previews	What a system notification says: Sender and subject, Sender only (the sender, and “New message”), or Only that mail arrived (“Nixt Mail”, and “New message”). While Nixt Mail is locked, a notification says only that mail arrived.	Sender and subject
Notification sound	Whether notifications from the system make the system sound. Greyed out while nothing is set to come from the system.	On

The first notification from the system asks for permission. Nixt Mail does not ask until something here needs it.

Accounts

Your accounts, their names and colours, and their servers.

Setting	What it does	Default
Accounts	Every account, with Edit to rename it, give it a colour, correct its servers, give it a new password, or remove it. Drag an account by its name to reorder. Add account starts adding one.	—
Accounts in All inboxes	One choice per connected account: which accounts’ inboxes are merged into All inboxes. Appears once two accounts are connected.	Every account
Send-from addresses	For each connected account, the other addresses it can send as, each with × to remove it, and Another address and Name shown with it to add one. See Send-from addresses.	Only the account’s own address
Replies go to	A field for each account, named with its address: an address that mail from the account asks replies to go to instead of its own. It is kept when you leave the field; empty, replies come back to the account. Something that is not one email address is not kept, and the field says so.	The account’s own address
Paused accounts	One switch per connected account. A paused account is disconnected without being removed: it is left out of All inboxes and its unread count, and announces nothing. Mail kept offline can still be read. Turn the switch off to connect it again.	None

When this device will not keep your sign-ins, a Secure storage line under the accounts says so, with what it means. While sign-ins are saved, it is not shown.

Full details: Accounts.

Message list

How the list of mail is laid out, and what a swipe, a snooze or an archive does to it.

What each row shows

Setting	What it does	Default
Sender names in the list	Full name, First name or Email address. A sender with no name is shown by address in every style. The reading pane always shows both.	Full name
Names in Sent and Drafts	The recipient (a row says To: and who it went to, or and N more) or Me, the sender (you, on every row).	The recipient
Sender pictures in the list	Whether each row starts with the sender’s initials or logo. Off gives the room to the sender and subject — for a narrow window.	On
Sender logos	Shows a company’s logo in place of the sender’s initials, fetched once per domain and kept. While on, Clear the logos kept deletes them; turning it off deletes them too.	Off
Preview lines	Lines of each message under its subject: None, One line, Two lines or Three lines.	One line
Unread counts in the sidebar	Whether folders in the sidebar show how many messages are unread. Off, a screen reader reads no counts either; unread mail is still bold in the list.	On

Grouping, order and search

Setting	What it does	Default
Group messages into conversations	One row per conversation (a back-and-forth is one row) or One row per message.	One row per conversation
Inbox on a phone or tablet	Needs you first leads the inbox with unread mail from people, as cards, and lists the rest by date; newsletters and notifications are never in the cards. Each card says why it is there, such as Unread, from a person, and Why these? above the cards explains the order and offers Show everything by date. Everything by date lists every message in date order, as on a computer.	Needs you first
Sort order	Newest first or Oldest first.	Newest first
Flagged mail at the top	Lists flagged messages first, then everything else, each part in the chosen order.	Off
Search message text	Subjects, senders and message text, or Subjects and senders only — faster, and works on servers that refuse to search inside messages.	Subjects, senders and message text
Start searching	As I type (the list changes to what matches a moment after you stop typing), or When I press Return. Clearing the search box goes back to the folder either way.	As I type
Recent searches	Keeps your last 8 searches on this device and offers them under the empty search box. While some are kept, Clear all forgets them and keeps remembering; turning it off forgets them and stops.	On

Archiving and deleting

Setting	What it does	Default
After archiving or deleting	What opens once the open message has gone: The next message, The previous message, or Back to the list.	The next message
Mark as read when archiving	Marks an unread message read, on the server, as you archive it.	Off
Confirm before deleting several messages	Asks before moving two or more selected messages to the trash.	Off

Snoozing

Setting	What it does	Default
Snoozed mail returns at	The hour Tomorrow morning, This weekend and Next week mean: 06:00, 07:00, 08:00, 09:00 or 10:00, shown on your chosen clock. Later today is always 18:00.	08:00
Snoozed mail returns unread	A snoozed message that comes back while Nixt Mail is open is marked unread, on the server, so it reads as new.	Off

Swiping a message

On a phone or a narrow window. With a mouse, a message is dragged to a folder instead.

Setting	What it does	Default
Swipe right	Mark read or unread, Flag or unflag, Snooze until tomorrow, Archive, Move to trash or Nothing.	Mark read or unread
Swipe left	The same choices.	Archive

Reading

What happens when a message is opened, and how it is shown.

Opening a message

Setting	What it does	Default
Mark as read	As soon as I open it (moving through the list with the arrow keys marks each message read), After a moment (then 1 seconds, 2 seconds, 5 seconds or 10 seconds; 2 seconds unless changed), or Only when I say so.	As soon as I open it
Message order in a conversation	Oldest at the top or Newest at the top.	Oldest at the top
Where a long conversation opens	At the top, or At the newest message — a long conversation opens scrolled to its newest message. Applies with Oldest at the top.	At the top
Older messages in a conversation	Collapsed, Unread ones expanded, or All expanded.	Collapsed

Showing a message

Setting	What it does	Default
Show recipients	What the line under the sender says: A summary (“to you and 2 others”, “cc you”, or “to team@example.com” for a mailing list), or Every address in To and Cc.	A summary
Quoted text in messages	Shown, or Collapsed — quoted history at the end of a plain-text reply is folded behind a button.	Shown
Fixed-width font for plain text	Draws plain-text mail in a fixed-width font, so tables, logs and code stay in columns.	Off

Email addresses in a message

Setting	What it does	Default
Clicking an email address	Write a message in Nixt Mail (an address or a mailto link in a message starts a new message here, with any subject the link carries), or Open the system’s mail app.	Write a message in Nixt Mail

Attachments

Setting	What it does	Default
Where attachments are saved	Save to Downloads, or Ask where to put it (cancelling the dialog cancels the save).	Save to Downloads

Details: Reading mail.

Composing

Who mail comes from, what happens once it is sent, and what is checked before it goes.

Writing

Setting	What it does	Default
Send new mail from	The account a new message is sent from: The selected account, or one of your addresses. Replies always come from the account the mail arrived at. With one account, it says new mail comes from that account.	The selected account
Show Cc and Bcc	When I ask for them (behind a Cc Bcc button) or Always shown. A message that has either shows them regardless.	When I ask for them
Address suggestions	Whether To, Cc and Bcc offer people you have exchanged mail with as you type.	On
Check spelling as you type	Whether a misspelled word in the message, the subject or the reply box is underlined, with corrections when you right-click it. On a Mac. See Spelling.	On
Closing an unsent draft	Keep it as a draft, or Ask first (closing or pressing Esc asks: keep writing, discard, or keep as draft).	Keep it as a draft
Keeping a message safe while you write	On this device, encrypted keeps a copy here and offers it back if Nixt Mail closes before the message is sent. In the Drafts folder saves it to a connected account’s Drafts folder about every 30 seconds instead, one copy replaced each time. See If Nixt Mail closes while you write.	On this device, encrypted

Templates

Setting	What it does	Default
Templates	The text you keep to put into messages, each with Edit and Delete, and New template. See Templates.	None

Replying and forwarding

Setting	What it does	Default
Default reply	Whether the first reply button replies to the sender (Reply) or everyone (Reply all). The other is always beside it.	Reply
Quick reply box	Whether an open message has a box to write a reply in under it. Off, the message has the whole pane.	On
Quote the original in replies	Whether a reply written under a message starts with that message quoted. The Quote switch beside a reply changes it for that reply.	On
Reply position	Above the quoted message (what you write comes first) or Below the quoted message (the quoted message first, then your reply and signature — the order mailing lists ask for).	Above the quoted message
Attachments when forwarding	Include them (the original’s files are fetched and attached to the forward, and you can remove any) or Leave them out (the forward carries the text alone).	Include them

Sending

Setting	What it does	Default
Time to undo sending	How long a sent message waits so it can be taken back: Off, 5 seconds, 10 seconds or 30 seconds. Quitting during the wait sends it.	5 seconds
Bcc myself	Puts your own address in Bcc, so a copy lands in your inbox.	Off
After sending a reply	Leave it where it is, or Archive the conversation once the reply has gone.	Leave it where it is

Before sending, ask about

Setting	What it does	Default
Missing attachment	Asks before sending mail that says “attached” or “enclosed” and has no file. Words in the quoted message do not count.	On
Empty subject	Asks before sending mail with no subject.	On
Many recipients in To and Cc	Asks before sending to more than 10 addresses in To and Cc, who would all see each other. Bcc is not counted.	On
Recipients outside my organisation	Asks before sending from a work address to anyone at another domain, and names them. Never asks from Gmail, Outlook, iCloud and similar public services.	Off
New recipients	Asks before sending to an address you have neither had mail from nor written to — a mistyped or wrongly suggested address — and names it. People you have written to are read from your Sent folder, so somebody who never replied is not asked about. Your own addresses never count.	Off
Reply all after a Bcc	Asks before replying to everyone on mail you were sent in Bcc, since the reply would tell them you had it. Mail from a mailing list is not asked about.	On

Details: Writing mail.

Signatures

What goes at the bottom of the mail you send, and when.

Each account

Setting	What it does	Default
Signature	The lines added to mail from each account. Choose the account, then type. With no account, it says Add an account to give it a signature.	None
Signature for replies	A shorter signature for replies and forwards from the account chosen above, in place of the full one. With no account, it says Add an account to give its replies a signature of their own. Empty, replies and forwards have the full signature. Replaced by a line of text when Use the signature in is New mail only.	The same signature

Where the signature goes

Setting	What it does	Default
Use the signature in	New mail, replies and forwards, or New mail only.	New mail, replies and forwards
Signature position in replies	Above the quoted message or Below the quoted message. A reply written below the quoted message has its signature at the end either way.	Above the quoted message
Signature separator line	Sets the signature off with a `--` line, which other mail programs recognise and can fold away. Off, a blank line alone.	On

Rules

What happens to mail as it arrives.

Setting	What it does	Default
Rules	Conditions and actions applied to mail as it arrives, in order, for every account or kept to one. Each rule is tried on the folder open now as you write it, and a deleted rule can be put back with Undo. Add a rule and Run on what is downloaded.	None

Details: Rules.

Out of office

An automatic reply your mail server sends while you are away.

Setting	What it does	Default
Automatic reply	Per account: Reply while I am away, First day away, Last day away, Subject (optional), What people will read, and Save. Kept on the account’s mail server, not on this device.	Off
Say so while a reply is on	A line over an account’s mail while its reply is on, with Turn it off and Change it. Off, nothing is shown and no server is asked.	On

Details: Out of office.

Sync and offline

How much is fetched, how often, and what is kept on this device.

Downloading mail

Setting	What it does	Default
Messages loaded at a time	How many messages are fetched in one go: 25, 40, 75 or 150. Fewer show up sooner; more means less loading as you scroll.	40
Loading older mail	With a button (the end of a folder offers Load more) or As I reach the end (the next messages are fetched automatically).	With a button
Most messages in a list	A ceiling on one list: 200, 500, 1000 or 2000 messages. Search reaches the rest.	500
Download messages in advance	Downloads the next messages, and those on screen, before you open them, so they open at once. Nothing is marked read. Off, only a message you open is downloaded — for a metered connection.	On

New mail

Setting	What it does	Default
Checking for new mail	Push, as it arrives (Nixt Mail keeps a connection open) or Check on a schedule (then Every minute, Every 5 minutes, Every 15 minutes or Every 30 minutes; every 5 minutes unless changed).	Push
Check mail when switching back	Asks the server for new mail whenever you come back to the Nixt Mail window.	On

Offline mail

Setting	What it does	Default
Keep mail for offline reading	Which accounts and folders are kept on this device, how much, and for how long.	Off
Mail kept for offline reading	Clear deletes what is kept from this device. Mail on your server is untouched. It is greyed when nothing is kept.	—

Details: Offline mail.

Calendar

How the calendar looks, new events, and calendar accounts.

Setting	What it does	Default
Calendar opens in	The view the calendar opens on: As I left it, or always Day, Work week, Week, Month or Agenda.	As I left it
Weeks in month view	Always six (the grid keeps its height from month to month) or Only the weeks it covers (four, five or six, so each day has more room).	Always six
Agenda length	How many days the agenda lists and its arrows move: A week, Two weeks or 30 days.	30 days
Week starts on	The first day of each week.	Monday
Working hours	The hours shaded in day and week views, which open scrolled to their start.	08:00–18:00
Hour height	Compact, Standard or Spacious.	Standard
Second time zone	None, or another place’s hours down the side of the day and week views, beside your own: UTC, London, Paris, Cairo, Istanbul, Riyadh, Dubai, India, Singapore, Tokyo, Sydney, São Paulo, New York, Chicago or Los Angeles. The zone is named over its column, and summer time is followed: the hours are the ones for the day you are on, so arrowing to another day brings that day’s. In a week where a clock changes, the column’s tooltip says which day its hours are for and when the change is — open that day to see its hours.	None
Week numbers	ISO week numbers beside the dates.	On
Declined events	On, declined events stay on the calendar, faded and struck through. Off, they are left off.	Shown
Past events	Faded or Not faded.	Faded
New event length	How long a new event is when nothing was dragged out.	30 minutes
New event reminder	The reminder a new event starts with.	15 minutes before
New events show me as	Busy or Free.	Busy
Default calendar	The calendar a new event goes to unless another is chosen.	The first calendar that can be written to
Calendar accounts	CalDAV, Google and Microsoft 365 calendars, with Manage.	None
Keep calendars offline	Keeps connected calendars on this device, encrypted, to open at once and read offline.	Off

Details: Calendar. Clock format is in General, and reminders are in Notifications.

Privacy and security

What senders can learn, links and fake senders, locking Nixt Mail, and erasing it.

At the top, a summary says how many of the seven protections in this section are on — for example 5 of 7 protections are on — with a mark for each and Turn on all, which turns on the rest and says what it changed. Every protection below is an ordinary switch, and the count follows each one as you set it. Each can be put back on its own with Put back.

What senders can learn

Setting	What it does	Default
Load images from the web	Off: pictures a sender hosts are held back until you load them in a message, so opening mail tells the sender nothing. On: they load in every message, and senders can tell when you open their mail, and roughly from where.	Off
Always load images from	The addresses whose pictures load without asking, each with × to remove it. Added from a message with Always from this sender. Not used while Load images from the web is on.	Nobody
Offer to send read receipts	Off: a request for a receipt is ignored. On: a message that asks shows a line offering to send one, and nothing goes unless you press it.	Off

Links and fake senders

Setting	What it does	Default
Remove link tracking	Takes click-tracking parameters such as `utm_source` and `fbclid` off a link before it opens.	On
Show where a link goes first	A link shows the address it really goes to, and opens only when you say. Off, it opens straight away; a link whose words name another place is pointed out either way.	Off
Warn about fake senders	Says so in red under the sender when a message’s name and address do not match: a name that is itself a different address, or the name of someone you write to, or of one of your own accounts, from an address that is not theirs. It does not block the mail.	On
Blocked senders	The addresses and domains whose mail goes to Junk as it arrives, without a notification, each with × to unblock it. To add one, type an address, or @ and a domain, under Block an address or a domain, and click Block. Also added from a message with Block sender…. See Block a sender.	Nobody

Locking Nixt Mail

Setting	What it does	Default
App lock	Asks for Touch ID, Windows Hello or the device passcode before showing mail. When on: Lock after Immediately, After 1 minute, After 5 minutes, After 15 minutes or After 1 hour, and Lock now.	Off (locks after 5 minutes once on)
Hide mail in the background	Covers the mail whenever another window is in front, and uncovers it as soon as Nixt Mail is in front again. There is nothing to unlock.	Off
Unlock before erasing or exporting	While the app lock is on, Erase everything on this device and Export settings ask for Touch ID, Windows Hello or your device passcode first.	On

Start over on this device, at the end, has Erase everything on this device.

Details: Privacy and security.

AI and services

Where each capability runs, and the licence.

Setting	What it does	See
Licence	Your edition and licence status.	Licence and updates
Where AI and services run	Everything at once, with All local and Nixt Cloud, then a row for each capability this copy can run: this device or your own server. Mail always runs on this device. The rest are listed under Not in this copy of Nixt Mail, grouped by the edition that has them. Default: this device.	Where AI and services run
AI model, provider and key	Which model AI uses, and the key for a provider.	AI providers
AI permissions	What AI may read and do.	AI permissions

Keyboard

Whether single keys act, and every shortcut Nixt Mail answers to.

Setting	What it does	Default
Change a shortcut	Find a shortcut narrows the list below by name or keys. Change beside each shortcut the shell answers: press the keys you want and Save. Needs ⌘, Ctrl or Alt; never Esc or Tab; a combination another action answers in the same place is refused by name. Put back returns one, Put them all back returns every one.	The keys Nixt Mail ships with
Single-key shortcuts	Whether a letter on its own does something, or only keys with ⌘ or Ctrl do. Turn off if you control the computer by voice, or keys get pressed by accident.	On
Delete key	Whether Delete and Backspace Move to trash or Archive.	Move to trash
⌘Return sends	Whether ⌘Return and Ctrl Return send the message or reply being written.	On

Below the settings, every shortcut is listed under Everywhere, and in Mail, While writing and In Calendar. See Keyboard shortcuts.

Updates

Whether a newer build is available, and when Nixt Mail asks.

Setting	What it does	Default
Check for updates	Only when I ask (Nixt Mail asks the download service only when this section is opened or Check now is pressed), Each time Nixt Mail starts (it asks once, sending your licence so the service can answer, and tells you only when a newer build is ready to install, with See it to open this section), or Every day (as it starts, and again every day it stays open; each version is announced once).	Only when I ask
Skipped version	The version you chose not to be told about with Skip this version, with Stop skipping. A newer version is announced as usual.	None

See Licence and updates.