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33Mail vs Mailinator: catalog facts
33Mail	Mailinator
Best for: Disposable email forwarder offering unlimited free aliases	Best for: Throwaway sign-ups and automated email or SMS testing
Free Free for unlimited aliases on the 33mail subdomain.	Free + paid options Public inboxes are free; private domains and testing features need a paid subscription with a free trial.
Web	Web
Unlimited free aliases on the service's subdomain Simple to create a new alias on demand for any signup	Public inboxes need no registration API and webhooks for automated tests All 4 strengths for Mailinator Public inboxes need no registration API and webhooks for automated tests Covers both email and SMS workflows Works with common browser test frameworks
Aliases live on 33mail's shared subdomain rather than a custom domain on the free tier Long-running service with a dated interface compared to newer alternatives	Public inboxes can be read by anyone Testing features require a paid plan
Web application	Web application, Hosted service
Not open source	Not open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Sources for 33Mail 33mail.com Catalog checked September 22, 2026	Official website Full listing and sources Sources for Mailinator mailinator.com Catalog checked September 24, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.