Courses that cover email deliverability best practices with Keap, including maintaining a good email sending reputation, extending reach and developing targeted email marketing campaigns, preventing emails from ending up in spam folders, understanding Keap rules about contacts and emailing them, solving email issues and using email tools in Keap, sending effective email blasts, improving deliverability at the domain and email text level, setting up DKIM, and staying up-to-date with changes in email deliverability practices.