| Type | Name | Platform | Category | |
|---|---|---|---|---|
| OUTLOOK | Outlook | Windows | ||
| THUNDERBIRD | Thunderbird | all | ||
| OPERA | Opera | all | ||
| BAT! | The Bat! | Windows | ||
| ALPINE | Alpine | all | ||
| SEAMONKEY | SeaMonkey | all | ||
| SYLPHEED | Sylpheed | all | ||
| Mac | ||||
| KMAIL | KMail | Mac, Linux | ||
| CLAWS | Claws Mail | all | ||
| MBOX | mbox | all | ||
| PEGASUS | Pegasus | Windows | ||
| OST | OST file | Windows |
