GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!
analyze.email - Test the spam-y-ness of your emails
Gmail Mail Merge - Send personalized emails with attachments
Canned Emails - A minimal site with prewritten emails
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
DeepMail - Diligently sourced emails. Accurate emails for Startups and established companies