Read docs Updated 2026-06-17
What is Guerrilla Mail?
Guerrilla Mail is an API-based service that generates disposable temporary email addresses for receiving mail.
It is useful for developers performing application testing and for users requiring short-term anonymous email access.
What you can build with Guerrilla Mail
App email verification testing
Developers generate temporary addresses to test sign-up flows, confirmation links, and OTP delivery without polluting real inboxes or triggering spam filters.
Anonymous registration bots
Scripts create throwaway accounts on services that require email, then poll the inbox to complete verification steps automatically.
Privacy-focused form submissions
Web tools or browser extensions let users submit contact forms or download gated content using a short-lived address that auto-expires after use.
Get started with Guerrilla Mail
- 1Visit guerrillamail.com and note the randomly assigned address or create a custom one
- 2Send mail to the temporary address from your application or service
- 3Call the public API endpoint to list messages in the inbox
- 4Fetch individual message content or attachments as needed
- 5Let the address expire automatically after the session ends
Guerrilla Mail: pros & cons
Pros
- +No API key or authentication required
- +HTTPS endpoints for secure requests
- +Instant address creation with no sign-up
- +Simple JSON responses for quick integration
Cons
- –Addresses expire after roughly one hour of inactivity
- –No guaranteed delivery or long-term storage
- –Rate limits apply on public endpoints
Did you find this helpful?
Frequently asked questions
A free service that supplies disposable email addresses for temporary use and discards them after a short period.
User reviews
Verified reviews from the community shape this listing's rating.
Loading reviews…
Similar APIs
Other social & web options worth comparing.