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Mail setup guide

Desktop clients

Thunderbird, Outlook, Apple Mail (covered separately), Spark, K-9 - the IMAP/SMTP setup is identical. This guide uses Thunderbird; the field names match almost every other client.

Universal settings

Every mail client asks for the same six things. They're all on the Overview tab of your Synq mail admin. Copy them as you go:

  • Username - your full email address (same on both servers).
  • Password - from your Synq admin Overview tab.
  • IMAP server / port / security - typically port 993 with SSL/TLS.
  • SMTP server / port / security - typically port 587 with STARTTLS.
  • Authentication - "Normal password" (not OAuth).

Thunderbird

  1. 1
    Open Thunderbird. If this is your first account, the setup wizard appears automatically. Otherwise: File → New → Existing Mail Account.
  2. 2
    Enter your name, full email, and password. Click Continue.
  3. 3
    Thunderbird will try to auto-detect. Stop it by clicking Manual config as soon as the option appears - auto-detection often picks the wrong protocol.
  4. 4
    Set the IMAP host, port 993, SSL/TLS, Normal password. SMTP: host, port 587, STARTTLS, Normal password. Username on both = your full email.
  5. 5
    Click Re-test. The dots should turn green. Click Done.

Outlook (classic)

  1. 1
    File → Add Account → Advanced options → check Let me set up my account manually.
  2. 2
    Enter your email → Connect.
  3. 3
    Choose IMAP.
  4. 4
    Fill the incoming/outgoing servers and ports from the right rail. Set incoming encryption to SSL/TLS and outgoing to STARTTLS.
  5. 5
    Enter your password. Outlook will verify; once green, click Done.

K-9 / Spark / FairEmail (open-source clients)

The flow is the same on every other IMAP client: when asked, choose Manual setup → IMAP, fill in the values from the Overview tab, and avoid any "OAuth" or "Google sign-in" options - this is a standalone IMAP/SMTP server, not a Google account.

Common pitfalls

"Server doesn't trust the certificate" usually means Let's Encrypt hasn't propagated yet (5-15 min after install). Accept the cert once and the warning won't repeat.
"Username and password not accepted" when your credentials are correct - check that the username field has your full email, not just the local part before @. This server's virtual-mailbox setup requires the full address.