"City of Largo known among geeks for its large scale
Linux deployment (see NewsForge for more details) uses Balsa as
their e-mail program of choice.
While Largo has long-time migration plans to a a completely new,
propertiary groupware product, their 800 users have been
successfully using Balsa for a number of months. Balsa turned out
to be satisfactory solution even for freshly converted Windows
users. Due to small memory footprint, it has been possible to run
the program for all the users on single application server."