HELO
Debugging and testing your emails has never been easier.
HELO launched on April 21, 2020 with 27 votes, #1,054 of 5,003 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 6 years on.
What it does
HELO is a desktop app for macOS, Windows, and Linux which listens for outgoing emails of your local applications and catches them.
HELO is the swiss-army-knife of local email testing and debugging. Catch and review local emails without digging through logs.
Using PHP? Good news - Laravel Herd Pro now ships with its own email testing tool Using PHP? Good news - Laravel Herd Pro now ships with its own email testing tool Learn more → HELO is a desktop application that will change the way you test your emails. No more broken links, missing images, and customer complaints. HELO exposes an SMTP server and catches the outgoing emails from your application instead of sending them to their actual recipient. The automated link check verifies that all links in an email are valid and return an HTTP 200 status code. Don't send emails with broken links again. If activated, HELO automatically checks the Apache SpamAssassin score of your incoming emails.…from usehelo.com
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