| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 3 | 2 |
| Spec score · Personal Email Services | 8.8 (#12) | 8.0 (#68) |
| Email aliases | Yes | Yes |
| Free plan | Yes | Yes |
| Mailbox storage | 5120 | A newly registered mailbox starts at 1 GB and can grow automatically with active use. |
| Mail protocols | AT&T provides IMAP and POP3 settings for supported AT&T email domains. | POP3 retrieval is available with SSL/TLS on port 995, while SMTP sending through I.UA is limited to VIP accounts and IMAP is not offered. |
| Platform access | web_mobile_desktop | web_mobile_desktop |
| Support | AT&T provides self-service setup, troubleshooting, security, password, and account recovery help, plus support videos. | The help center provides email support through its feedback form when users cannot find an answer. |
