SaaS Email Marketing Handbook - Double Your MRR With Email Marketing
HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
Quokka (formerly Kryptowire) - The gold standard in SAST, MAST, IAST, and more!
Elevatr Email Marketing Automation - Fast and easy email marketing software
Google Sheets Email Marketing - Email automation and validations directly from Google Sheets
Grade My Email - Helps you get out of the spam folder.