Upscribe - Embeddable lead generation forms for Medium
Elevatr Email Marketing Automation - Fast and easy email marketing software
Marvel Embeds - Embed interactive prototypes on any site (including Medium!)
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!
Refined Medium - Chrome & Firefox extension that removes clutter on Medium
Grade My Email - Helps you get out of the spam folder.