Flowmailer Alternatives

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.

Reach the Inbox, not the spam folder.

paid Free Trial $29.0 / Monthly (100 Emails a Day)

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

Identify & fix your email deliverability issues for free 👀

Open source mail delivery platform, alternative to Mailgun or Sendgrid

Open Source

turboSMTP is a reliable, powerful, easy-to-use SMTP server that maximizes the deliverability of all...

Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.

Open Source

SMTP provides scalable affordable email infrastructure for all your sending needs.

Google's encompassing suite of cloud-based business apps.

Jira Service Management is an online development platform that facilitates users with multiple services.

Get more from your email list.

freemium

WP Mail SMTP is an online platform that facilitates users with multiple facilitation.

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!

This tiny tool uses a real Gmail account to check if your emails will land in the Primary inbox of a reader or if it's stuck in the promotions tab or SPAM folder.