Cold Email Hacks - Proven cold email templates and tactics for B2B startups
PigeonBot - Send emails via Slack with the /email command
Cold Email Analyzer by Mailshake - Real-time analysis of email subject lines and copy
Inbox Ignite - Prevent your emails from going into spam
Mailshake - Mailshake lets you build your professional network through a smart and intuitive approach to cold emailing.
Thunder Mail - Cheap and simple transactional emails API with Amazon SES