| Price from | $5/mo | $0.03/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 1 | 6 |
| Spec score · Online fax services | 7.5 (#70) | 8.9 (#9) |
| Spec score · Online Fax Services | 7.5 (#74) | 8.6 (#24) |
| Inbound faxing | Yes | Yes |
| Number porting | The FAQ says existing fax numbers can be ported to the service in most cases. | FaxSalad says customers can port an existing fax number, though fees may apply depending on the country of origin. |
| Security | The FAQ says atFAX uses 256-bit AES SSL encryption and user authentication, and accepts delivery only from registered email addresses. | FaxSalad says faxes are encrypted in transit and at rest on secure servers and are available in the portal for up to three months. |
| Service | atFAX is a cloud hosted fax service that lets organisations outsource faxing. | FaxSalad lets customers send and receive faxes from email, a smartphone, and online. |
| Support | The FAQ directs customers to contact their reseller or atFAX directly for support. | FaxSalad says its support team responds to contact form inquiries and support cases within 24 hours. |
| Virtual fax number | Yes | Yes |
