Topicbox - Put team emails into one centralized, searchable place

Mailmeteor - Send hundreds of personalized emails with Gmail.

Nova Inbox - Personalize emails in seconds, right from your inbox

GMass - GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!

Front - The platform for exceptional customer service at scale.

Interseller - Interseller helps find contact information, reach out to them with email automation and syncs it all into your database.