Apps similar to MailGenius include MailMoxie, which has a free version. Other options are Unspam.email, Maildog.co, GlockApps and Inbox Placement Test. In total there are six Email Marketing Services like MailGenius for the web, Chrome OS, Mac, Windows and Linux.
MailMoxie is an advanced Email Governance platform designed for the 2026 inbox landscape. It serves as a diagnostic layer for your marketing stack, ensuring every email you send is technically perfect and accessible to all.
United States
Unspam.email is an online spam tester tool for emails. It helps to improve the deliverability and reputation of your email campaigns.
Maildog monitors your email sending and provides you with actionable feedback on what to do to improve email deliverability.
GlockApps provides everything you need to help troubleshoot and monitor inbox placement, email reputation, and campaign performance so that you can adjust your strategic and tactical plans, improve results and increase ROI.
United States
Free real-mailbox inbox placement testing across 9 providers including Gmail, Outlook, Mail.ru, and Yandex.
Kazakhstan
Vetter allows you to safely determine whether an email you wish to send will be marked as spam. This is done by testing the email against a network of real email accounts, and checking whether it ended up in inboxes or was spammed.
