Mailmeteor - Send hundreds of personalized emails with Gmail.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
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!
MailClark - The Slack bot for external communications
Interseller - Interseller helps find contact information, reach out to them with email automation and syncs it all into your database.
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates