| Service Details | | | | | |
| Service | | RingCentral | Nextiva | MyFax | eFax |
| Buy Now | |  | | | |
| Free Trial | |  | | | |
| Basic Functionality (Smartphone) | | (4.2/5) | (3.4/5) | (4.4/5) | (4.2/5) |
| Extra Features | | (4.4/5) | (1.4/5) | (1.5/5) | (4.2/5) |
| Plan Includes | | | | | |
| Plan Reviewed | | Fax 1500 | Single User | Best Value | eFax Plus |
| Outgoing pages / month | | 1500 | 500 | 100 | 150 |
| Incoming pages / month | | included in outgoing | included in outgoing | 200 | 150 |
| Monthly Cost | | US $22.99 | US $8.95 | US $10 | US $12.95 |
| Monthly cost - annual plan | | US $17.99 | US $4.95 | US $9.17 | US $10.79 |
| Setup cost | | Free | Free | Free | Free |
| Overage page cost | | US 5.9¢ | US 3¢ | US 10¢ | US 10¢ |
| Number Availability | | | | | |
| Toll-free numbers | | ✓ | | ✓ | ✓ |
| Vanity numbers | | ✓ | | | |
| U.S.A. | | ✓ | ✓ | ✓ | ✓ |
| Canada | | ✓ | | ✓ | ✓ |
| United Kingdom | | ✓ | | ✓ | ✓ |
| Australia | | | | ✓ | ✓ |
| More countries | | | | ✓ | ✓ |
| Sending Features | | | | | |
| Service | | RingCentral | Nextiva | MyFax | eFax |
| Free Trial | | | | | |
| Send a fax from email | | ✓ | ✓ | ✓ | ✓ |
| Send internationally | | ✓ | | ✓ | ✓ |
| Send to multiple fax numbers | | ✓ | ✓ | ✓ | ✓ |
| Auto re-send on busy or no answer | | ✓ | ✓ | ✓ | ✓ |
| Schedule fax delivery time | | ✓ | Only from desktop or web application | | |
| More than 50 different file formats | | | | ✓ | ✓ |
| Send from a scanner or connected fax | | | Only with the fax bridge device (extra) | | Only from desktop |
| Cover sheet customization | | ✓ | | | ✓ |
| Send a fax to more than 10 recipients | | ✓ | | ✓ | ✓ |
| Send a fax to more than 50 recipients | | ✓ | | | |
| Change transmission speed | | | | Only from web application | Only from web application |
| Charge code, tracking key, or reference number field | | | Only from web application | ✓ | ✓ |
| Receiving Features | | | | | |
| Receive a fax to email | | ✓ | ✓ | ✓ | ✓ |
| Receive to multiple email accounts | | ✓ | ✓ | ✓ | ✓ |
| Receive multiple faxes at the same time | | ✓ | ✓ | ✓ | ✓ |
| Receive faxes when not connected to the internet | | ✓ | ✓ | ✓ | ✓ |
| Automatically receive to printer or connected fax | | | Only with the Fax Bridge device (extra) | | Only with a computer |
| SMS (text) alert | | ✓ | ✓ | | |
| Security | | | | | |
| Service | | RingCentral | Nextiva | MyFax | eFax |
| Free Trial | | | | | |
| SSL | | ✓ | ✓ | ✓ | ✓ |
| Account Password | | ✓ | ✓ | ✓ | ✓ |
| No email attachment option | | ✓ | ✓ | ✓ | ✓ |
| HIPPA Option | | ✓ | | | ✓ |
| Encrypted fax format option | | | | | Computer only |
| Other Features | | | | | |
| Option to integrate fax with voice plan | | ✓ | ✓ | | |
| Unlimited fax storage | | | ✓ | ✓ | ✓ |
| Address book | | ✓ | ✓ | ✓ | ✓ |
| Address book Outlook sync or import | | ✓ | | | ✓ |
| Dropbox, Google Drive, or Box integration | | ✓ | | | ✓ |
| Signature stamp | | | | | ✓ |
| Block junk fax numbers | | ✓ | | | |
| Software | | | | | |
| Email fax | | ✓ | ✓ | ✓ | ✓ |
| Web application | | ✓ | ✓ | ✓ | ✓ |
| Desktop software (Windows) | | ✓ | | | ✓ |
| Desktop software (Mac) | | ✓ | | | |
| Desktop software (Linux) | | | | | |
| iPhone app | | ✓ | | ✓ | ✓ |
| Android app | | ✓ | | ✓ | ✓ |
| Customer Service | | | | | |
| Customer support hours | | 24 / 7 | 5am - 6pm Arizona time M-F, 9am - 1pm Saturday | 24 / 7 | 24 / 7 |
| Phone support | | Yes, but not on the "Fax 500" and "Fax 750" plans | ✓ | ✓ | ✓ |
| User guide | | ✓ | ✓ | ✓ | ✓ |
| Suport forum or knowledgebase | | ✓ | ✓ | | |
| FAQ | | ✓ | ✓ | ✓ | ✓ |
| Ticketing System | | ✓ | ✓ | ✓ | ✓ |
| Buy Now | | | | | |
| Free Trial | | | | | |
| Full Review | | RingCentral | Nextiva | MyFax | eFax |