EmailEngine App Alternatives

Pro developers get assurances. OSS maintainers get paid.

Get paid to build what you love on GitHub

Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.

Try for free paid Free Trial $12.0 / Monthly (Per inbox, per month.)

Flexible, RESTful access to the user's inbox

PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller

Easy-Integration Messaging and Email for Software Publishers.

paid Free Trial $5.5 / Monthly (by month/account)

Email marketing software made for cold email marketing professionals. Using advanced AI to generate email personalization in seconds

Try for free paid Free Trial $99.0 / Monthly (Starter)

Ko-fi offers a friendly way for content creators to get paid for their work.

The Nylas Cloud API powers your application with email, calendar & contacts features. Built-in features for better email, calendar, and contact management.

Help the open and free web flourish. Support creators by paying for their free content.

Unprivileged sandboxing tool

A free, fast and friendly way to accept donations 💰

Warm up your cold email inbox, and never land in spam anymore!

Try for free freemium $9.0 / Monthly

Patreon enables fans to give ongoing support to their favorite creators.