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Guerrilla Mail

guerrillamail.com

From $0.83/mo Free plan Open source WebAndroidAPISelf-hostedBrowser extension
Visit guerrillamail.com
Spec score 9.5 #2 of 44 in Temporary email services

Spec sheet

What it does
Guerrilla Mail provides disposable email addresses without requiring registration.Read 14 Oct 2026 · guerrillamail.com
API
A public JSON API over HTTP is available, and the maker says it may be rate limited without publishing its rate limits.Read 3 Oct 2026 · guerrillamail.com
Support
The maker asks users to contact it through Facebook or Twitter in English and says it cannot always reply.Read 3 Oct 2026 · guerrillamail.com
Android app
Google Play lists Guerrilla Mail Throwaway Email with instant address generation, no registration, auto-refresh and multiple inboxes.Read 14 Oct 2026 · play.google.com
API availability
A public JSON API is available to all users over HTTP at api.guerrillamail.com/ajax.php.Read 14 Oct 2026 · guerrillamail.com
API clients
The maker describes the API as usable for Android, iPhone/iPad, Facebook and other custom applications.Read 14 Oct 2026 · guerrillamail.com
API limits
The API documentation warns that requests may be rate limited but does not publish rate-limit values.Read 14 Oct 2026 · guerrillamail.com
API operations
Documented API functions include address creation, inbox polling, message retrieval, address changes, deletion, forgetting an address and extending time.Read 14 Oct 2026 · guerrillamail.com
Chrome extension
The Chrome extension offers disposable-mail creation and inbox viewing without leaving the current page.Read 14 Oct 2026 · chromewebstore.google.com
Company incorporation
Jamit Software Limited is listed as a Hong Kong private company incorporated on February 29, 2008.Read 14 Oct 2026 · 996co.com
Data research
The maker may use anonymized data from obvious spam for anti-spam, anti-malware or anti-phishing research.Read 14 Oct 2026 · guerrillamail.com
Disposable email
The service provides a disposable email address without requiring registration, and users can also choose their own address.Read 3 Oct 2026 · guerrillamail.com
Documentation depth
The Read the Docs reference documents address generation, message listing, polling, retrieval, address changes, forgetting and deletion.Read 14 Oct 2026 · guerrillamail.readthedocs.io
Email rendering
The API documentation says HTML in email bodies is filtered and images are blocked by default when displayed.Read 3 Oct 2026 · guerrillamail.com
Email retention
Incoming email is kept for one hour after delivery to an inbox, or until the user deletes it.Read 3 Oct 2026 · guerrillamail.com
Encryption
The website can only be accessed using HTTPS encryption.Read 3 Oct 2026 · guerrillamail.com
HTTPS
The website states that it can only be accessed through HTTPS encryption.Read 14 Oct 2026 · guerrillamail.com
Inbox access
Anyone who knows an Inbox ID may access its inbox; the maker says a scrambled address can provide additional privacy.Read 3 Oct 2026 · guerrillamail.com
Inbox access risk
Anyone who knows an inbox ID can access that inbox because accounts do not require registration.Read 14 Oct 2026 · guerrillamail.com
Intended use
The maker suggests the service for using an address with parties a user does not trust and for webmasters checking whether their sites send email correctly.Read 3 Oct 2026 · guerrillamail.com
Limit: advertising and dated UI
The 2026 review characterized the interface as ad-heavy and dated compared with newer services.Read 14 Oct 2026 · tempemail.cc
Limit: blocked signups
The same review reported that Discord, Reddit, Cloudflare and Netflix rejected Guerrilla Mail addresses while smaller forums accepted them.Read 14 Oct 2026 · tempemail.cc
Limit: organization
TechRadar found the service has limited organization features.Read 14 Oct 2026 · techradar.com
Limit: sending outage
A 2026 hands-on review reported that sending returned a message saying it was suspended for the day.Read 14 Oct 2026 · tempemail.cc
Limit: shared inbox exposure
TechRadar warned that anyone who obtains an address can access its inbox.Read 14 Oct 2026 · techradar.com
Maker identity
The Guerrilla Mail site identifies Jamit Software Limited as its copyright holder and operator.Read 14 Oct 2026 · guerrillamail.com
Message retention
Incoming messages are kept for one hour after delivery and are then deleted unless the user deletes them earlier.Read 14 Oct 2026 · guerrillamail.com
Open source technology
The maker says its email is powered by Go-Guerrilla, an open-source project.Read 3 Oct 2026 · guerrillamail.com
Outgoing IP header
The terms say outgoing messages receive an X-Originating-IP header.Read 14 Oct 2026 · guerrillamail.com
Password manager
The website includes a password manager that generates a different password for each site from a domain and master passphrase, which it says is never stored or transmitted.Read 3 Oct 2026 · guerrillamail.com
PHP client licence
The documented PHP client is released under the MIT licence.Read 14 Oct 2026 · guerrillamail.readthedocs.io
PHP requirements
The PHP client documentation lists PHP 5.4.0 and Composer as requirements.Read 14 Oct 2026 · guerrillamail.readthedocs.io
PHP SDK
A community PHP client uses Guzzle and exposes methods such as getEmailAddress and getEmailList.Read 14 Oct 2026 · guerrillamail.readthedocs.io
Praise: anonymity
TechRadar described the service as anonymous and highlighted that no account or personal information is required.Read 14 Oct 2026 · techradar.com
Praise: usability
TechRadar praised the interface as streamlined and the service as easy to use for temporary email.Read 14 Oct 2026 · techradar.com
Privacy and logs
The maker says it normally keeps logs turned off and may use data from obvious spam for anti-spam, anti-malware, or anti-phishing research.Read 3 Oct 2026 · guerrillamail.com
Privacy logging
The maker says logs are normally disabled because of traffic and resource constraints.Read 14 Oct 2026 · guerrillamail.com
Quarantine
Undelivered mail remains in quarantine for up to one hour before being discarded.Read 14 Oct 2026 · guerrillamail.com
Random addresses
Visiting the site automatically creates a random email address, while users may also choose an address.Read 14 Oct 2026 · guerrillamail.com
Rating on Chrome Web Store
3.7 out of 5 from 7 ratingsRead 14 Oct 2026 · chromewebstore.google.com
Scrambled addresses
The Scramble Address feature creates an alias intended to make inbox IDs harder to guess.Read 14 Oct 2026 · guerrillamail.com
Self-hosting
Go-Guerrilla is an MIT-licensed Go SMTP server that can run as a standalone daemon or as a Go package.Read 14 Oct 2026 · github.com
Self-hosting extensibility
Go-Guerrilla allows developers to add processors and chain them through configuration.Read 14 Oct 2026 · github.com
Self-hosting storage
Go-Guerrilla supports MySQL and Redis processors plus MailDir and FastCGI processors.Read 14 Oct 2026 · github.com
Send and receive
The service supports viewing incoming mail and composing, replying to, forwarding and deleting messages.Read 14 Oct 2026 · techradar.com
Sending restrictions
The terms prohibit sending spam, malicious software, phishing, fraud, and other listed abusive or illegal messages.Read 3 Oct 2026 · guerrillamail.com
Spam folder
Guerrilla Mail has no separate spam folder; arriving messages are delivered directly to the inbox.Read 14 Oct 2026 · guerrillamail.com
Spam protection
The maker describes using disposable addresses to keep spam away from a user's real inbox.Read 3 Oct 2026 · guerrillamail.com

Plans and prices

Free Free Disposable inbox · no registration · messages deleted after 1 hour Read 14 Oct 2026 · guerrillamail.com
Custom domain $9.99 a year $9.99 USD / year Use a domain you own · incoming mail accessible only to you or everyone Read 14 Oct 2026 · guerrillamail.com

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