Windows mail clients

MAPILab.Com - Home of must have Outlook add-ins newsgroup (nntp or web access) to discuss Windows mail clients and utilities

See E-mail for Everyone, Adam Engst's review of e-mail clients. Although written from a Mac perspective, it covers the big-three cross-platform clients, so may be of interest.

Note that e-mail merge utilities are listed on the utilities page

Internet (POP3 assumed, or IMAP4 if specified, along with SMTP):