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FreeCustom.Email
Fast, privacy-first temporary email service
FreeOpen SourceEmailsMarketing3,214 impressions#4 of its week
FreeCustom.Email provides instant, ad-free disposable email aliases with real-time inboxes and a public API for developers.
- for
- Developers, testers, and users needing quick, private email verification.
- pricing
- freemium
- license
- open source
Key features
- Instant alias creation — Create custom email addresses instantly without sign-up or ads.
- Real-time inbox UI — Live email view with auto-refresh, attachment support and instant deletion.
- Public API & CLI — Programmatic inbox creation, OTP extraction and bulk generation via API and CLI.
- Custom domain support — Register and use your own domain for disposable inboxes (Startup plan and above).
- OTP extraction — Auto-parse one-time codes from incoming emails.
- Webhooks & real-time streams — Receive email arrival events via HTTP webhooks or WebSocket connections.
Use cases
- Receive OTP codes for account sign-ups without exposing personal email
- Automate verification flow testing in CI pipelines
- Provide branded disposable inboxes for QA environments using a custom domain
- Bulk generate temporary addresses for marketing or bot campaigns
FreeCustom.Email pricing
- Free$0/mo1,000 requests/month · 10 active inboxes · OTP extraction
- Developer$10/mo/month50,000 requests/month · 25 active inboxes · Custom domains
- Startup$29/mo/month250,000 requests/month · 40 active inboxes · Webhooks & MCP
- Growth$89/mo/month1,000,000 requests/month · 100 active inboxes · 25 MB attachments
- Enterprise$199/mo/month10,000,000 requests/month · Unlimited inboxes · 99.95% SLA
FreeCustom.Email FAQ
Can I use the API without a paid plan?+
The Free plan provides limited API access (1,000 requests/month, 10 inboxes) but advanced features require a paid plan.
Do credits unlock paid features?+
No. Credits only add extra request capacity; features are tied to the selected API plan.
Is there an uptime guarantee?+
Yes, the Enterprise plan includes a 99.95% uptime SLA.
Can I use my own domain for disposable emails?+
Yes, custom domains are available on Startup (1 domain), Growth (10 domains) and Enterprise (unlimited).
What happens when I exceed my monthly quota?+
If you have purchased credits they are consumed automatically; otherwise you receive HTTP 429 errors until the quota resets.
Summarized by DevHunt from freecustom.email · Sep 29, 2026. Details may change; check the official site.












