Disposable email Tools
Updated 6 October 2026
Before giving out or typing an address, check that it is correct and that its domain can really receive messages. The tool also spots common typos such as "gmial.com".
| Check | What it tells you |
|---|---|
| Syntax | The address follows the writing rules: an @, a local part, a valid domain |
| Typo | The domain looks like a misspelled major provider |
| MX | The domain has a server in charge of receiving mail |
| SPF | The domain lists the servers allowed to send on its behalf |
| DMARC | The domain asks email providers to block spoofing |
Knowing whether a specific mailbox exists, for example whether john.smith@example.com is really open, is impossible without writing to it. Mail servers refuse to say, to stop spammers guessing addresses. Services that promise this check are often wrong, or send real test messages.
No. It only reads public information from the domain's DNS. No message is sent and the mailbox is not contacted.
Without DMARC, email providers have no instruction to reject emails that spoof this domain. Scammers can then send messages that appear to come from it.
The mailbox may be full, closed or non-existent, or your own domain may be poorly authenticated. The bounce message usually states the cause.