Lotus Mail (1998) 1 Communications Windows

Lotus Mail was an interim product targeted at users of the older Lotus cc:Mail product, with the intent being that they would eventually switch to Lotus Notes/Domino. Lotus Mail features a user interface similar to cc:Mail, LDAP support, and powerful filtering options. Lotus Mail lacked support for HTML formatted e-mail (good!).

• 4.x

Lotus Notes (1993) 4 Communications PIM Windows MacOS

Lotus Notes is a powerful e-mail and collaboration tool. It was heavily used by large corporations. It was sometimes criticized for its complexity and bloat. Notes is a client server tool, and uses the Lotus Domino server (originally just called Lotus Notes server). Lotus Notes and Lotus Domino competed against Microsoft Outlook and Microsoft Exchange.

• 3.x
• 5.x