Comparison
Mailnull covers the basics. FastTempMail adds real-time updates, multi-inbox support, flexible expiry, and a genuine auto-delete policy. Here's how they compare.
Feature Comparison
Why Switch
Mailnull gives you one address at a time. FastTempMail lets you run up to 3 active disposable addresses in a single session — useful for parallel testing or comparing sign-up flows side by side.
Mailnull uses a fixed expiry window you cannot adjust. FastTempMail lets you choose — 10 minutes for a quick OTP, 6 hours for the default, or up to 3 days for longer evaluations.
FastTempMail permanently deletes the address and every message when the session expires. No backups, no retention. Mailnull does not offer the same explicit data-deletion guarantees.
FastTempMail uses server-sent events to push new messages to your inbox the moment they arrive. No manual refreshing required — useful when you are waiting on an OTP or verification link.
Verdict
Mailnull works for simple throwaway use — generate an address, receive one email, move on. But it stops there. No real-time updates, no multi-inbox, no control over how long the address lives.
FastTempMail gives you a live inbox, flexible expiry from 10 minutes to 3 days, up to 3 parallel addresses, and a clear auto-delete policy. If you use disposable email more than occasionally, the difference is noticeable.