Spam filter

One spam filter for the whole organisation, running on our servers with no outside service. Light, Standard or Strict, with Blocked and Trusted senders you can edit.

The inbox, with shared and private mailboxes in the sidebar.

What it does

Caught on arrival

  • Judged when it arrives

    It weighs the sender checks (SPF, DKIM, DMARC), your provider’s spam flag, and display names that mimic another address.

  • You choose how strict

    Light lets more through. Standard is the default. Strict catches more, and sometimes real mail too.

  • Your team teaches it

    Three different people reporting a sender within 30 days sends that sender’s mail to Spam for everyone.

  • Trusted senders

    A trusted sender is never marked as spam, on mail that proves it came from them. Domains you write to count.

How it works

Report, block, trust

  1. 1

    Mail arrives

    The filter checks it. Suspected spam goes to Spam instead of the Inbox, with a banner that says why it is there.

  2. 2

    You correct it

    Mark as spam teaches the filter. In Spam, choose Not spam to put a message back. Pictures and links stay off in Spam.

  3. 3

    You tune it

    In Settings › Spam & senders, set how strict the filter is, how long Spam is kept, and who is Blocked or Trusted.

Good to know

The details

Who can use it
Everyone can mark spam, and block or trust senders for themselves. Administrators set the strictness and block senders for everyone.
Where
Settings › Spam & senders, with tabs for Blocked, Trusted and Images.
Spam is emptied
After 7, 30 or 90 days, as an administrator chooses. The default is 30.
Your provider
Marking spam changes DMU Mail only, not your provider’s server. Mail your provider already put in its junk folder arrives in Spam.

Be one of the first teams in

We let a few organisations into the private beta every week. Join the waitlist and we’ll email you when there’s room for your team.

Join the waitlist

Three quick questions. No card needed.