SendGrid is the world's largest Email Infrastructure as a Service provider.
Schedule an email to be sent later. Easy email reminders. Boomerang for Gmail lets you take control of when you send and receive email messages in Chrome/Firefox/Safari.
Send newsletters, 100x cheaper via Amazon SES
Offer a number of services for mailing lists including advanced segmentation
A/B split testing and a number of automation options.
Online email marketing solution to manage contacts, send emails and track results. Offers plug-ins for other programs.
Lets user set up emails with a simple word editor and measure the engagement. Plans range from 19$/month (1 user, 5 email templates) to 999$/month.