tmailrDeliverability · Address
Email address checker
Check whether an address is well formed, whether the domain is disposable or a role mailbox, and whether it is a Gmail dot or plus alias that really lands in another inbox.
What the checker flags
Catch a bad email address before it reaches your list
A single bad address costs more than it looks: a disposable domain never opens, a role mailbox complains, a typo bounces, and every bounce chips at your sender reputation. This email address checker reads the address itself, no message sent, and tells you which of those it is.
Disposable domains
Throwaway and temporary-mail domains built to expire. Accepting them on a signup form fills your list with addresses that will never open a message.
Role mailboxes
Addresses like info@, support@ and admin@ that reach a team rather than a person. They bounce and complain more, and most email platforms treat them as higher risk.
Aliases and typos
Gmail dot and plus aliases that all land in one inbox, and near-misses like gmial.com or hotnail.com that simply bounce. The checker names the real mailbox and suggests the likely correct spelling.
Questions people actually ask
Straight answers
How can you tell if an email address is fake or disposable?
By the domain and the shape of the address. A disposable address uses a throwaway domain built to vanish; a role address like info@ or admin@ reaches a team, not a person; and a typo like gmial.com will simply bounce. The checker flags all three from the address alone, before you ever send to it.
What is a Gmail dot or plus alias?
Gmail ignores dots and treats anything after a plus sign as the same mailbox, so john.doe+shop@gmail.com and johndoe@gmail.com are one inbox. People use these to sign up many times or to filter mail. The checker shows the real mailbox an alias delivers to.
Why does a role address like info@ matter?
Role mailboxes go to whoever is on a shared team, not one person, so they bounce more, unsubscribe more and hurt sender reputation on a marketing list. Spotting them early keeps your list clean.
Do you store the addresses I check?
No. Each check is an ordinary syntax and domain lookup that is not saved to a profile or shared. There is no account and nothing to sign up for.