Setting up your email in Thunderbird

Add your Flashcloud email account to Thunderbird with the manual IMAP setup: server mail.yourdomain.com, port 993 for incoming, port 465 for outgoing, and your full email address as the username. Thunderbird's autodetect sometimes guesses wrong ports or falls back to POP3, so it's worth checking the settings by hand even if autoconfig succeeds.

Add the account

Open Thunderbird and go to the hamburger menu (or Tools on some platforms) → Account Settings → Account Actions → Add Mail Account. Enter your name, your full email address, and your password, then click Continue.

Thunderbird will try to auto-configure the account. When it finishes scanning, click Configure manually before accepting the result, since autodetect can land on POP3 or the wrong port for a domain it doesn't recognize.

Manual server settings

Fill in the incoming and outgoing fields exactly as below. These match the standard values documented in Email server settings (IMAP and SMTP).

• Incoming (IMAP): server mail.yourdomain.com, port 993, SSL/TLS: SSL/TLS, authentication: Normal password.
• Outgoing (SMTP): server mail.yourdomain.com, port 465, SSL/TLS: SSL/TLS (use port 587 with STARTTLS if 465 is blocked on your network).
• Username (both): your full email address, e.g. you@yourdomain.com.

Use IMAP, not POP3. IMAP keeps your mail on the server and in sync across Thunderbird, your phone, and webmail. POP3 downloads messages and can remove them from the server, which means other devices stop seeing them.

Click Re-test or Done. Thunderbird will connect and confirm the settings. If it warns about the certificate, make sure you typed mail.yourdomain.com correctly, not a subdomain or typo.

If your domain isn't pointed at Flashcloud yet

If you haven't switched nameservers to Flashcloud yet, mail.yourdomain.com won't resolve to the right server. Open a ticket or use live chat to confirm the correct mail server hostname to use in the meantime, then go back into Account Settings and update the server names to mail.yourdomain.com once DNS points to us, so the SSL certificate matches and authentication doesn't hiccup.

Common issues

• Authentication fails immediately: double-check the username is the full email address, not just the part before the @. Thunderbird sometimes pre-fills just the local part.
• Connection times out on port 465: some networks (hotel wifi, corporate firewalls) block 465. Switch outgoing to port 587 with STARTTLS instead of SSL/TLS.
• Old messages don't show up: IMAP syncs folders as Thunderbird discovers them. Right-click the account name → Subscribe and make sure all folders are checked, especially if you use a client elsewhere that created custom folders.
• Want a browser fallback: if Thunderbird ever misbehaves, webmail uses the same account and password, no client setup required.

Keeping a local backup

Once Thunderbird is set to IMAP with full folder sync, it naturally builds a local copy of your mail over time. If you want a deliberate backup strategy instead of relying on that side effect, see backing up your email for options including full mailbox export.

When to contact support

If Thunderbird rejects the password on a fresh account, confirm you're using the password you set when the mailbox was created, not your portal login. If the connection still fails after checking hostname, port, and username, open a ticket from the portal (Support → New ticket) or use live chat. A real person can confirm your mail server hostname and check whether anything on the account side is blocking the connection.