Polymail Sequences - Simple, powerful multi-stage email campaigns
Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
MailChimp Snap - Send simple, photo-based email campaigns from your phone.
Kin Calendar - The simple and connected calendar
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!
Calendly for Chrome - Schedule meetings without leaving your inbox