Summaries
Get the short version of a long thread.
- Review moved to Thursday, 2 PM
- Q1 budget is approved
- Final mockups needed from you
Encrypted email with a built-in assistant
Choose Privacy mode and mail to other Privacy mode users is end-to-end encrypted automatically. Choose AI mode and an assistant on our own servers drafts replies, summarises threads and keeps follow-ups on track.
- End-to-end encrypted Automatic between Privacy mode users
- Your mail is never sold or used for ads
- Web, iPhone, iPad, Android One inbox, every device
Your whole inbox, in your hand.
The iPhone and Android apps do everything the website does. Same mail, same settings, same privacy on every screen.
A sorted inbox
Primary, Transactions, Updates and Promotions, all in one place.
Summaries in one tap
Summarize a long thread, or pull out the tasks.
Write and send your way
Check your tone, send later, or set an expiry date.
AI you control
See what it does, and switch every feature off.
9:41
Inbox
AllUnread 3Starred
- MCMaya Chen9:41Thursday’s design reviewI moved it to 2 PM so the whole team can join.
- PSParcel Service9:12Your order has shippedArriving Thursday. Track your parcel.Track parcel
- Earlier this week
- DWDesign WeeklyMonThis week in interface designFive small changes that make a big difference.
- FTFinance TeamSunQ1 budget approvedThanks everyone. The budget is now confirmed.
9:41
Thursday’s design review
SummarizeExtract tasksTranslate
MCMaya Chento you, 9:41 AM
End-to-end encrypted
Hi, I moved the review to 2 PM on Thursday so the whole team can join.
Can you bring the final mockups? Thanks!
SummaryReview moved to Thursday, 2 PM. Q1 budget approved. Mockups needed from you.
9:41
New messageSend
ToMaya Chen
SubjectThursday’s mockups
Hi Maya, the final mockups are attached. Happy to walk through them at 2 PM on Thursday.
Send laterExpires in 1 weekCheck tone
Tone: friendlyClear and polite. Ready to send.
9:41
Sipher AI
- Summarize a threadCatch up in a few lines
- Write a replyFrom one short prompt
- Pull out tasksDates and to-dos
- TranslateKeep the look of the message
Privacy modeTurn every AI feature off
A helper that saves you time.
Sipher AI reads, writes and sorts mail for you. It is optional, and you choose when it is on.
Ask your inbox
Ask in plain words, like “when is my flight?”.
What did Maya decide about Thursday?
Maya moved the design review to Thursday at 2 PM.
Scam checks
Spot fake senders and risky links before you click.
- Sender doesn’t match
- Urgent wording
- Link goes elsewhere
Privacy mode
One switch turns every AI feature off.
Privacy mode
- A long threadbecomes a short summary you can read in seconds.
- A questiongets an answer from your own mail.
- A suspicious messageis flagged before you click anything.
- An order updategets a shortcut to track the parcel.
- A rough draftbecomes a clear, polite reply.
Illustrative examples. Sipher AI is optional, and one switch turns it off.
From your mail to an answer.
A long thread, a question, a suspicious message or a rough draft goes in. A summary, an answer, a warning or a reply comes out.
Moving over takes a few minutes.
Sign in to Gmail or Outlook and we copy your mail across. Your old account stays as it is.
GmailOutlook and Microsoft 365Any mail serviceMBOX or EML files
Bring your mailStep 2 of 3
[email protected]Connected. Your old account won’t be changed.
Folders to copy
- Inbox
- Sent
- Receipts
- Projects
- Old newsletters
How far back
Last 30 daysEverything paid plans
Copying. You can keep working.
Read, starred and draft marks are kept. Duplicates are skipped.
Questions, answered
It depends on the mode you choose. In Privacy mode, mail to other Privacy mode users is end-to-end encrypted automatically: it is locked on your device and we can’t read the message or its attachments. In AI mode your mail is not end-to-end encrypted by default, so the assistant can work on it. Mail to and from other services is encrypted in transit, but our systems can process it, like any email service. Subject lines and addresses are never end-to-end encrypted.
Yes. Privacy mode switches off every AI feature for your account.
You can send them a link that expires. Add a password and we can’t read the message either. Without a password, anyone with the link can open it until it expires. Or you can send a normal message.
You can reset your sign-in password with your recovery email or a recovery code. End-to-end encrypted mail is different: its key is protected by your passphrase, and if you lose that, only your recovery phrase brings the mail back. We can’t do it for you. Write the recovery phrase down and keep it somewhere safe.
Yes. Sign in to Gmail or Outlook, or enter your mail server details for another service, then choose your folders. We copy your messages and never delete anything from your old account. The free plan imports the last 30 days. Paid plans can import everything.
Your mail. Your privacy.