Built around one question: what does this email need from you?

IMAP and SMTP accounts, Gmail and Microsoft 365, together in one list with a reading pane.

Search all your mail across every account.

To do, Informational, Notifications, Newsletters, Invitations and Spam, plus your own: a name, instructions and sender include and exclude lists, sorted by rules.

Smart inboxes sorted by AI instead of rules, learning from every correction you make.

One conversation at a time, settled with D, H or K.

Write on any device, including on the phone with files attached. Drafts sync and are filed in your Drafts folder.

An HTML signature per mail account, on every device.

Make todo from any email, with a due date, synced across devices. Complete the todo and the email archives itself.

Let any smart inbox turn its mail into todos automatically.

AI reads what is asked of you and writes the todo, due date included.

Hand a conversation to someone with a note and a due date. tresso tracks it in Waiting on and nudges when it is late.

Everything worth knowing in one calm overview. One click on Noted and it is done.

Your daily brief, summarized: the gist of each email in a sentence.

Events with recurrence, synced with your CalDAV calendars. Answer invitations right from the email.

Event reminders and notifications on web, desktop and mobile.

Day, week, month and agenda views, and an event editor.

Pick a meeting time that works for everyone invited.

Your Google Calendar and Outlook calendars next to CalDAV.

Phone, desktop and browser notifications for mail to do or hand over. Everything else waits.

Newsletters and notifications arrive in batches, with one-click unsubscribe.

Select many conversations and archive, move, flag or delete them at once.

Clear out mail by sender, smart inbox or age, with suggestions for what can go.

Every attachment is scanned before it can be opened. Infected files go to quarantine.

The passwords and tokens for your mail accounts are stored encrypted.

All your stored mail, encrypted per user. Coming soon.

A native desktop app with a local copy of your mail, native notifications and sign-in through your keychain.

Read, act on and write mail on your phone, with a local copy for speed.

Support, sales or info addresses handled together, with a clear owner for every email.

Assign an email to a teammate inside tresso, discuss it in internal comments, and see who has how much on their plate.

Read mail, create todos and set verdicts from your own code, with API keys.

Tell your own systems when mail arrives or a verdict changes.

Let other AI assistants search your mail and act on it, within the permissions you grant.

Tools for building on tresso and seeing what your integrations do.

How much mail you get, from whom, and how quickly it leaves your inbox.

Once a year, a personal look back at your year in email.