Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
Polymail Sequences - Simple, powerful multi-stage email campaigns
Kin Calendar - The simple and connected calendar
MailChimp Snap - Send simple, photo-based email campaigns from your phone.
Calendly for Chrome - Schedule meetings without leaving your inbox
MailChimp - MailChimp is the best way to design, send, and share email newsletters.