| Price from | $0.03/mo | $9.75/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 6 | 8 |
| Spec score · Online fax services | 8.9 (#9) | 8.6 (#21) |
| Spec score · Online Fax Services | 8.6 (#23) | 8.6 (#24) |
| Email faxing | Email to Fax sends faxes from an email account and supports whitelisted senders who can fax on the account holder’s behalf. | Faxes can be sent and received through existing email accounts. |
| Free plan | No | No |
| Inbound faxing | Yes | Yes |
| International faxing | Yes | Yes |
| Monthly page allowance | 150 | 250 |
| Security | FaxSalad says faxes are encrypted in transit and at rest on secure servers and are available in the portal for up to three months. | The FAQ says SuperFax uses a secure server with SSL encryption and no human interaction with a fax; the privacy policy also says sensitive information submitted online is encrypted with SSL. |
| Service | FaxSalad lets customers send and receive faxes from email, a smartphone, and online. | SuperFax is an email-based internet fax service for sending and receiving faxes using an email address. |
| Support | FaxSalad says its support team responds to contact form inquiries and support cases within 24 hours. | Customer support is offered by email and telephone Monday through Friday from 8:00 AM to 5:00 PM Pacific time. |
| Virtual fax number | Yes | Yes |
