Buttondown is a simple, powerful tool for building and sending newsletters and emails. I struggled with other tools that were either too complex and expensive or too simple and unwieldy, so I created an alternative: an elegant interface that lets you write and edit quickly while providing all the amenities a modern email app needs.
Email Newsletter Checklist is a handy cheat-sheet of various tasks to help marketers send out newsletter or a promotional mailer to their customers. It is a list of actionable items you have to check before you hit the send button. Your readers will appreciate this :)