IMAP & SMTP settings for all email apps
Use these secure server details when an email app asks you to configure a TrekMail mailbox manually.
Guided setup is easier
Open Apps & devices for the mailbox to get instructions tailored to Gmail, Outlook, Apple Mail, Thunderbird, or another app. See Connect TrekMail to Any Email App.
Incoming mail (IMAP)
| Server | imap.trekmail.net |
|---|---|
| Port | 993 |
| Security | SSL/TLS |
| Username | Full mailbox address, such as hello@example.com |
| Password | The mailbox password |
TrekMail uses IMAP so mail stays synchronized across webmail and every connected device. POP3 is not supported.
Outgoing mail (SMTP)
| Server | smtp.trekmail.net |
|---|---|
| Recommended port | 465 with SSL/TLS |
| Alternative port | 587 with STARTTLS |
| Authentication | Required; choose Password or Normal |
| Username | Full mailbox address |
| Password | The same mailbox password |
If your domain uses a custom SMTP provider: configure that provider in TrekMail first, but keep
smtp.trekmail.net in the email app. TrekMail applies the private route behind the scenes. Do not share provider credentials with mailbox users.
Concurrent IMAP connection limits
A connection is an active link opened by an email app. Normal use on a few devices stays well below these limits.
| Plan | Per IP address | Across all devices |
|---|---|---|
| Nano | 10 | 15 |
| Starter | 25 | 40 |
| Pro | 50 | 80 |
| Agency | 100 | 150 |
If an app reports “Maximum connections exceeded,” close unused email apps and wait for their old connections to end before reconnecting.
Important checks
- Always use the complete mailbox address as the username.
- Use the mailbox password, not the TrekMail dashboard password.
- You do not need a separate app password.
- Confirm sending is ready in Apps & devices before testing an app that validates both servers.