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Changelog
Introducing the Helo CLI
You can now use the Helo API from your terminal: send email, manage domains, channels and webhooks, and look up activity and statistics.
Oct 19, 2026
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Sandbox Channels: A better way to test your email integrations
Say hello (or helo?) to Sandbox Channels, your safe, self-contained space to develop and test email integrations without sending to real inboxes.
Aug 31, 2026
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Introducing Webhooks: Don’t call us, we’ll call you!
Helo now supports webhooks. Whenever something happens to an email you’ve sent, we send an HTTP POST to a URL you choose.
Aug 24, 2026
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Say hello to Helo
Starting today, Helo is open to everyone, not just our early access customers. So if you’re looking for an email delivery service you can count on, come give Helo a try!
Aug 17, 2026
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