Every email app asks the same questions: incoming server, outgoing server, port, encryption and username. This page is the quick reference for MdmHost cPanel mailboxes. Keep it open while you set up a new device, or when troubleshooting an app that stopped sending or receiving.
Before you start
- The full email address and its password.
- Your exact settings are also shown in cPanel → Email → Email Accounts → Connect Devices next to each account, including ready-made auto-configuration scripts for Outlook and Apple devices.
Recommended secure settings
| Setting | Value |
|---|---|
| Username | Full email address, e.g. sara@example.com |
| Password | The mailbox password |
| Incoming server | The server hostname from Connect Devices (recommended) or mail.example.com |
| IMAP port | 993 with SSL/TLS |
| POP3 port | 995 with SSL/TLS |
| Outgoing (SMTP) server | Same as incoming |
| SMTP port | 465 with SSL/TLS, or 587 with STARTTLS |
| SMTP authentication | Required, same username and password as incoming |
Tip: Use the server hostname shown in Connect Devices instead of mail.yourdomain.com. Its SSL certificate always matches, so apps do not show certificate warnings.
Non-encrypted ports (avoid)
| Protocol | Port | Note |
|---|---|---|
| IMAP | 143 | Plain text unless STARTTLS is used |
| POP3 | 110 | Plain text unless STARTTLS is used |
| SMTP | 25 | Often blocked by home ISPs; meant for server-to-server mail |
Only use these to test whether an encrypted port is blocked on your network.
IMAP or POP3?
| IMAP (recommended) | POP3 | |
|---|---|---|
| Where mail lives | On the server; every device sees the same folders | Downloaded to one device; usually deleted from the server |
| Multiple devices | Yes, fully in sync | Poor: read on phone, still unread on PC |
| Uses hosting space | Yes, counts toward the mailbox quota | Little, if not leaving copies |
| Backups | Included in daily JetBackup | Mail on your PC is only backed up by you |
Choose IMAP unless you have a single computer and a very small quota. To keep a POP3 mailbox from filling up, set "remove from server after 14 days".
Webmail, calendars and contacts
- Webmail:
https://yourdomain.com:2096orhttps://webmail.yourdomain.com - CalDAV/CardDAV: the URLs shown in cPanel → Email → Calendars and Contacts (port 2080 secure).
Device guides
- Outlook, Thunderbird and phones overview
- iPhone and iPad step by step
- Android and the Gmail app
- Apple Mail on macOS
Troubleshooting
- Can receive but not send: SMTP authentication is off, or the port is wrong. Enable "My outgoing server requires authentication" and try 465 SSL, then 587 STARTTLS.
- Certificate name mismatch: use the hostname instead of
mail.yourdomain.com. - Constant password prompts: the password changed or your IP is blocked. See fix login problems.