Fastmail is not for sending bulk newsletter email. There is a pretty sweet product we have called Topicbox which is a take on mailing lists for organizations, b

Fastmail is not for sending bulk newsletter email. There is a pretty sweet product we have called Topicbox which is a take on mailing lists for organizations, but for bulk sending I would recommend taking a look at one of the services dedicated towards newsletters specifically. They'll give you list management and a bunch of features needed to run a newsletter.