SmarterMail is #5 in Top 12 Email Servers
SmarterMail offers all of the same features as Microsoft Exchange, but at a FRACTION of the cost. Unlike Exchange, features like audio and video group chat, and Team Workspaces for team meetings and group collaboration are included at no extra charge.
Positions in ratings
#5 in Top 12 Email Servers
The best alternatives to SmarterMail are: GMail, Microsoft Exchange, Zimbra, Microsoft 365, IceWarp, Mdaemon