Mailook - Identify & fix your email deliverability issues for free 👀

Mailmeteor - Send hundreds of personalized emails with Gmail.

Sidemail - The simplest way to send transactional emails. Sidemail makes sending transactional emails trivial, it's perfect for side projects, MVPs or the next big thing.

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!

Mailivery - Reach the Inbox, not the spam folder.

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