2 min read Sep 26, 2026

How to Set Up Your FimuroHost Email in Thunderbird

Recommended Thunderbird settings for FimuroHost email: IMAP and SMTP server names, ports, connection security and authentication, plus how to add or fix an account.

FimuroHost Team

FimuroHost Team

Technical Writer

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Thunderbird is a free email app for Windows, macOS and Linux (and now Android too). We recommend connecting it with IMAP so that your messages and folders stay in sync with webmail and your other devices.

Add a new account

  1. In Thunderbird, open the menu and choose Account Settings → Account Actions → Add Mail Account (or New → Existing Mail Account).
  2. Enter your name, full email address and mailbox password, then click Continue.
  3. If Thunderbird suggests settings, click Configure manually and check them against the tables below.
  4. Click Done.

Incoming server (IMAP)

SettingValue
ProtocolIMAP
Server nameimap.stackmail.com
Port993
Connection securitySSL/TLS
Authentication methodNormal password
UsernameYour full email address

Outgoing server (SMTP)

SettingValue
Server namesmtp.stackmail.com
Port587
Connection securitySTARTTLS
Authentication methodNormal password
UsernameYour full email address

Check an existing account

  • Incoming: open Account Settings and choose Server Settings under your account.
  • Outgoing: open Account Settings and choose Outgoing Server (SMTP) at the bottom of the left-hand list, then select the server and click Edit.

Common problems

  • Security exception / certificate warning: use the stackmail.com server names rather than a name on your own domain.
  • Login failed: make sure the username is the full email address and the authentication method is "Normal password" (not OAuth2).
  • Can't send: if port 587 is blocked on your network, try 465 with SSL/TLS.

Need help?

If something doesn't work as described, our team is happy to take a look. Open a support ticket or message us on WhatsApp at 01818160926.

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FimuroHost Team

Written by

FimuroHost Team

Technical Writer