Below is a list of settings and important addresses relevant to use of Atlas Hosted Email services that you may need. Note that authentication of a valid email address is required for all services.
Changes to the mail services are catalogued here.
| Service | Server | Port | Notes |
|---|---|---|---|
| Sending Email (SMTP) | smtp.ispmail.uk | 25 | STARTSSL is optional, but recommended. |
| 465 | Requires SSL/TLS | ||
| 587 | STARTSSL is optional, but recommended. | ||
| Receiving Email (POP3) | pop3.ispmail.uk | 110 | |
| 995 | Requires SSL/TLS | ||
| Receiving Email (IMAP) | imap.ispmail.uk | 143 | |
| 993 | Requires SSL/TLS | ||
| Webmail | ispmail.uk | 80/443 |
Please note that for email services that use SSL/TLS, you will need to ensure that your client software supports TLS 1.2 or higher. The following programs are known to support TLS 1.2:
- Microsoft Outlook 2016 (if all Windows and Office updates are applied)
- Microsoft Outlook 2019 onwards
- Mozilla Thunderbird 52.0 onwards
- Android 5.0 onwards
- Apple MacOS Sierra 10.12.6 onwards
- Apple iOS 9 onwards


