Everything mail should do.

Read faster, write easier and share an inbox, all in private.

Read less, know more

Sipher AI summarises threads, answers questions about your mail and drafts replies.

  • Ask your inbox a question in plain language
  • Summaries and suggested replies on any thread
  • Attachment analysis that pulls out the key details

Write once, send right

Turn a rough draft into a clear message, check the tone, then choose when it goes.

  • Smart compose and a tone coach before you send
  • Send later, with undo for 10 seconds after you hit send
  • Reusable templates and follow-up reminders

An inbox that sorts itself

Mail lands in the right place, and finding it again takes a second.

  • Primary, Transactions, Updates and Promotions, with your own hidden categories
  • Search with filters and operators
  • Create a calendar event from any thread

Built for teams

Share an inbox, hand a thread to the right person and keep your own domain.

  • Shared inboxes with assignment and internal notes
  • Admin, Member and View-only roles
  • Your own domains with guided DNS setup and catch-all support

Bring your old mail with you.

Sign in to Gmail or Outlook and we copy your mail across. Any other mail service works too. Prefer a file? On the web you can upload an MBOX file or a ZIP of EML files.

  1. Choose where your mail is

    Gmail and Outlook open their own sign-in page. For anything else, enter your mail server details.

  2. Pick folders and how far back

    Inbox and Sent are ticked for you. Bring the last 30 days, or everything on a paid plan.

  3. Keep working while it runs

    Your old mail fills in as it copies. You get a notification when it finishes.

Illustrative screen with demo content.

  • Your old account is untouched

    We copy your mail. We never delete anything from it.

  • Safe to run again

    Messages that already came across are skipped, so you will not get duplicates.

  • Read and starred stay that way

    Read, replied, starred and draft marks come with each message.

  • No password for Gmail or Outlook

    You sign in on Google’s or Microsoft’s own page. Server details for other services are stored encrypted.

Start your import

Keep your Gmail or Outlook address, too.

You do not have to give up your old address on day one. Connect it and switch at your own pace.

Bring the past

  • Import your mailCopy your messages from Gmail, Outlook or any other service.
  • Import your contactsUpload a CSV or vCard file from Gmail, Outlook or Apple Contacts.

Connect and forward

  • Forward new mailWe walk you through forwarding from your old address, so nothing slips past while you switch.
  • Up to 3 connected accountsThe free plan includes 1. Paid plans include up to 3.

Reply from your old address

  • Send as your Outlook addressAnswer from your Outlook address without leaving SipherMail. Sending as your Gmail address is rolling out.

Small things, done right.

The details you notice every day.

On every device you use.

The web app and the phone apps share one account and one inbox.

  • Works offline

    Widgets, alerts and a Face ID or fingerprint lock on iPhone and Android.

  • Several accounts

    Switch between your accounts in one app.

  • Other mail apps

    Use SipherMail inside other mail apps if you prefer them.

  • Import and export

    Bring your mail and contacts in, or save messages as EML or PDF.

App StoreGoogle PlayOpen the web app

Try it with your own mail.

The free plan includes private, locked email and some Sipher AI help.

Get started free