| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| Plans published | 3 | 2 |
| Spec score · Personal Email Services | 8.8 (#12) | 7.9 (#76) |
| Email service | AT&T Mail is a free email service for AT&T and supported legacy email accounts. | Mail.bg provides email accounts for exchanging email with Mail.bg and external domains. |
| Free plan | Yes | Yes |
| Mail protocols | AT&T provides IMAP and POP3 settings for supported AT&T email domains. | The homepage lists free IMAP, POP3, and SMTP over SSL after activation, plus IMAP PUSH for mobile devices. |
| Platform access | web_mobile_desktop | web_and_mobile |
| Support | AT&T provides self-service setup, troubleshooting, security, password, and account recovery help, plus support videos. | The homepage says account support is free, handled by Bulgarian-speaking staff, and that replies average several working days. |
