
FCE — Disposable Inbox API for OTPs
Test signup flows with disposable inboxes and OTP parsing
What it does
FreeCustom.Email now provides a full developer API for creating disposable inboxes programmatically. Built for testing signup flows, automation, and OTP verification. Features: • Automatic OTP / verification code extraction • Real-time email delivery via WebSockets • CLI for scripting and automation • Attachment support up to 50MB • Custom domain inboxes • Non-expiring request credits Free plan available — no credit card required. Try it live → freecustom.email/api/playground
Does the same job
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- WMWe made a CLI and API to automate inbound email2021 · ▲16
Hi HN! We're a 5 person team working on simplifying the creation of email apps. Right now, most email services focus on outbound emails (newsletters, transactional, delivery), but that doesn't solve the fact that we all hate receiving them. You can try it at https://mailscript.com Mailscript lets you create programmable email addresses. It works headless, via the CLI, API (we use Swagger to support most languages). You can even run it as a daemon on a server (to run functions when emails arrive). Once you get [email protected], you can create as many aliases as you'd like…
- MyTempMail – Temporary Email with OTPJul 2026 · mytempmail.tech · ▲4
Customized disposable email addresses with OTP support.


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