Though Open Mbox does provide free email service, we also have the paid plans which some users might have interests in.
| Function | Mailplus | Free |
| Disk Quota | 5GB | 350MB |
| Outgoing Mails per Day | 150 | 9 |
| IMAP/SMTP | yes | yes |
| Advanced Webmail | yes | no |
| Custom Filters | yes | no |
| Domain Email like Fastmail | possible | no |
| Premium Support | yes | no |
| Daily Backup | yes | yes |
| Cost | $19/y | $0 |