Connect a mailbox

Connect any mailbox that offers IMAP and SMTP. It takes a couple of minutes, and your history imports in the background.

Updated 25 October 2026 · 3 min read

Before you start

You’ll need the mailbox address and its password. If your provider uses app passwords, as Zoho Mail does when two-step verification is on, create one first. A Gmail or Microsoft 365 mailbox needs no password here: connect it with Google or Microsoft.

Steps

  1. Open Settings, then Mailboxes, and choose Add a mailbox.

  2. Enter the address and its password. DMU Mail looks up the server settings for your domain. For Gmail or Microsoft 365, choose Connect with Google or Connect with Microsoft instead and sign in there.

  3. Check the servers. If they weren’t found, your provider’s help pages list them.

  4. Choose who can see the mailbox: everyone, a team, or only you. An administrator can share it with more teams and people later.

  5. Choose how much history to import: everything, a year, six months or a month.

  6. Review and connect. The history keeps importing in the background while you work.

Adding a mailbox: the Servers step, with the IMAP and SMTP settings.
The Servers step, with the settings found for aegeanfreight.gr.

Common server settings

  • Zoho Mail

    IMAPimappro.zoho.eu · 993

    SMTPsmtppro.zoho.eu · 465

  • cPanel or Plesk hosting

    IMAPmail.yourdomain.gr · 993

    SMTPmail.yourdomain.gr · 465

  • Microsoft 365 or Gmail

    IMAPConnect with Microsoft or Google

    SMTPNo server settings needed

All with SSL. Use your full email address as the user name.

If it doesn’t connect

  • “Wrong password”

    Check it in your provider’s webmail. If two-step verification is on there, create an app password and use that instead.

  • “Couldn’t reach the server”

    Check the host name and port. Most providers expect SSL on port 993 for IMAP and 465 for SMTP.

  • A Gmail or Microsoft 365 mailbox

    Don’t type a password for these. Choose Connect with Google or Connect with Microsoft on the first step and sign in there. DMU Mail never sees the password.

New mail arrives within a few minutes

DMU Mail checks each mailbox every five minutes, so a message can take that long to appear after it reaches your provider.

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