Observed arrival · 2026-10-17
Mailbay gives agents their own inboxes
An email API for sending and receiving messages, with disposable inboxes for AI agents and app tests.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Developers building agent workflows, app tests, or SaaS email
- Worth noticing
- The listed free plan allows three inboxes and 3,000 emails per month, with custom domains and no card.
Field notes
The documented workflow covers creating, listing, and deleting inboxes, then reading messages, paging through them, waiting for new mail, or following threads. Sending can use a verified domain, and the page describes delivery events through signed webhooks, WebSockets, or polling. Its listed free plan includes custom domains, three inboxes, and 3,000 emails per month without a card.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue