Cold Email Hacks - Proven cold email templates and tactics for B2B startups
MailClark - The Slack bot for external communications
Cold Email Analyzer by Mailshake - Real-time analysis of email subject lines and copy
PigeonBot - Send emails via Slack with the /email command
Mailshake - Mailshake lets you build your professional network through a smart and intuitive approach to cold emailing.
Clubble.io - Answer emails via Slack.