| Price from | $5/mo | $60/mo |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 5 |
| Spec score · Online fax services | 7.5 (#70) | 9.0 (#7) |
| Spec score · Online Fax Services | 7.5 (#74) | 9.1 (#2) |
| Headquarters | New Zealand | Parker, Colorado, United States |
| Inbound faxing | Yes | Yes |
| Intended users | atFAX describes its service as designed for organisations both large and small that still rely on fax. | FaxCore describes its solutions as serving Fortune 500 and Fortune Global 500 companies and organizations with enterprise fax needs. |
| Security | The FAQ says atFAX uses 256-bit AES SSL encryption and user authentication, and accepts delivery only from registered email addresses. | FaxCore describes HTTPS, two-factor authentication, end-to-end encryption, and in-network routing as security measures for protecting faxes. |
| Support | The FAQ directs customers to contact their reseller or atFAX directly for support. | Support is available by phone, email, remote access, and a support ticket form; phone support hours are Monday through Friday, 9 AM to 8 PM Eastern Time. |
