PigeonBot - Send emails via Slack with the /email command
Warmup Inbox - Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.
Inbox Ignite - Prevent your emails from going into spam
Warmbox.ai - Warm up your cold email inbox, and never land in spam anymore!
Thunder Mail - Cheap and simple transactional emails API with Amazon SES
MailReach.co - The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.