| Email Client | Platforms | Major Features |
| Mulberry | MacOS 9, Win32,UNIX | Fast |
| MS Outlook Express | Win32 | Contacts, POP, IMAP |
| MS Outlook 2k | Win32 | Plugins, Calendar, Contacts, POP, IMAP, MAPI, Virus Prone |
| Eudora v5 | Win32, MacOS9 | Contacts, Filters, POP |
| Pegasus Mail v4.01 | Win32 | |
| The Bat! v1.53d | Win32 | |
| Poco Mail v2.5 | Win32 | |
| TransSoft Mail Control v5 | Win32 | |
| Beyond Mail v3 | Win32 | |
| PMMail 2000 Pro | Win32 | |
| IncrediMail | Win32 | |
| Becky! Internet Mail | Win32 | IMAP, LDAP, HTML, Reminders, Filters, Mailing-List Manager, Plug-Ins, Japanese |
| AllegroMail v2.4 | ||
| AK-Mail | Win32 | Filters, Templates, PGP, POP, |
| Express Plus v1.0 | Win32 | |
| Kaufman Mail Warrior | Win32 | HTML Viewer (not IE), Contacts, Search (??) |
| Mozilla | ||
| Nelson Email Organizer | ||
| Munite | Win32 | Threads, Filters, HTML (not IE), Lightweight |
| foxmail | Win32 | Hotmail, HTML, Contacts, Chinese |
| AvirMail | ||
| NetMail v3.01 | ||
| Phoenix Mail | ||
| Popcorn E-mail client | ||
| LingoMail | Multilingual | |
| Columba | Java | MIME, POP, IMAP |
| Emerald Mail | Java | MIME, POP, IMAP, NNTP |
| SToffelMail | Java | Calendar (compatible with Outlook) |
| CraftMail | Java | Multilingual, POP3 |
| Pooka | Java | IMAP, POP, mbox, addressbook (beta) |
| YAMM | Java | POP3, HTML, Multilingual, Identities |
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