
FCE — Disposable Inbox API for OTPs
Developer ToolsTest signup flows with disposable inboxes and OTP parsing
About
FreeCustom.Email now offers a complete developer API to programmatically generate temporary email inboxes. This is designed for purposes like testing account creation processes, enabling automation, and verifying one-time passwords. Key features include automatic retrieval of OTP and verification codes, immediate email delivery using WebSockets, and a command line interface for scripting and automation. It also supports attachments up to 50MB and allows for custom domain inboxes. Request credits do not expire. A free plan is available, and no credit card is needed. Experience it firsthand at freecustom.email/api/playground.
March 18, 2026Week 2
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