My company has automated checkwriting and checkprinting with PrintBoss for the last 2 years. We have had no issues and whenever we need assistance for any reason, their service people have been responsive and helpful. We would recommend PrintBoss.
Squarespace Email Campaigns - Email, but pretty.
Online Check Writer - Online Check Writer is an all-in-one financial service provider with all kinds of payment options to pay and get paid.
Mailivery - Reach the Inbox, not the spam folder.
Checkeeper - *Have your own check stock? Awesome, Checkeeper will work with virtually any type!
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!
CheckSoft - Check printing software