Email Marketing: A Beginner's Guide - Master email marketing with these 3 short ebooks from Drip.
Social Pomodoro - Meet an accountability buddy for 25 minutes of focused work.
Elevatr Email Marketing Automation - Fast and easy email marketing software
Focusmate - Distraction-free productivity via virtual coworking
HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
Habit List - Create good habits and break bad ones with the app that keeps you focused.