Email problems: start here (diagnostics map)
- 16.07.2026 19:13
-
- troubleshooting
Find your symptom and open the matching guide.
Fastest way: use the setup assistant on the garmtech.email login page – enter your e-mail address and get a ready-made profile, a QR code or the exact settings for your mail app.
Sending problems
- Can’t send at all (SMTP errors): troubleshoot SMTP
- Message returned as “blocked” / “rejected” / “spam detected”: outgoing email blocked – what to do
- Message returned with a bounce (Undelivered Mail): what the bounce means
- Mail arrives but lands in recipients’ Spam: deliverability checklist; check SPF, DKIM and DMARC
- Website form doesn’t send mail: contact form checklist
Receiving problems
- Not receiving mail: troubleshooting guide
- Mailbox full / quota exceeded: free up space
- Important mail lands in your Spam folder: spam control and whitelisting
Login and app problems
- App says “Authentication failed”: fix authentication errors
- Webmail or app asks for a code: 2FA and app passwords
- Certificate warning in the mail app: use your server hostname
Security
- My mailbox is sending spam: secure your account
- Suspicious “mailbox upgrade” emails: recognizing phishing
Setup guides
- Settings (IMAP/POP3/SMTP): Business Email | Hosting mailboxes (Plesk)
- Step-by-step for your app: Outlook, Thunderbird, iPhone/iPad, Apple Mail (macOS), Gmail app, Outlook mobile
- Hosting mailboxes in mail apps: Outlook, Thunderbird and Apple Mail
Still stuck?
Open a ticket and include: the mailbox address, the exact error text, and (for delivery issues) the full bounce message. This shortens diagnostics significantly.
Related Articles
Comments
Add Comment