Boneyard Tools

Email Address Validator

Enter an email address to check its format and catch common domain typos as you type. Valid addresses show a green confirmation, malformed ones show a red warning, and likely slips get a Did you mean prompt such as user@gmail.com in place of user@gmial.com. Click the suggestion to swap it in, or use Copy fix to grab the corrected address.

How to validate an email address

  1. Type or paste the address into the Email address field.
  2. Watch the live result: a green Looks like a valid email address or a red This does not look like a valid email address.
  3. If a Did you mean box appears, review the suggested correction.
  4. Click the underlined suggestion to replace your entry, or press Copy fix to copy it.

Examples

Catch a misspelled Gmail domain

user@gmial.com
Looks like a valid email address. Did you mean user@gmail.com?

Fix a wrong ending on any domain

sarah@company.con
Looks like a valid email address. Did you mean sarah@company.com?

Accept a tagged address unchanged

name+news@example.com
Looks like a valid email address. (no correction offered)

Frequently asked questions

Does this confirm the inbox actually exists?

No. It checks the format of the address and flags common domain typos. It does not send mail, run an MX lookup or query the mail server, so it cannot confirm that a mailbox is real, active or accepting messages.

Why does a misspelled domain still say the format is valid?

Because gmial.com is a syntactically well-formed domain, the address passes the format check even though the domain is wrong. The tool shows the green valid message and, separately, offers a Did you mean suggestion so you can still catch the slip.

Which typos can it fix?

It catches popular provider misspellings such as gmial, gmal, gmai, gmaill and gnail for Gmail, hotmial and hotmai for Hotmail, yahooo and yaho for Yahoo, plus outlok and iclould. It also repairs bad endings like .con, .cm, .co, .cpm, .ocm and .comm back to .com on any domain.

Why is an address with a space marked invalid?

Standard sendable addresses cannot contain unquoted whitespace, must have exactly one @, and need a domain with a dot and a top-level domain of at least two letters. An entry like jane doe@example.com fails on the space and is rejected.

Are plus signs and dots in the name allowed?

Yes. Tags like name+news@example.com and dotted local parts such as first.last@example.com are valid. The tool does reject a local part that starts or ends with a dot or contains two dots in a row.

Does it follow the full RFC 5322 grammar?

No. It uses a pragmatic real-world rule rather than the complete standard, which permits exotic quoted local parts and bracketed IP domains that almost never appear in practice. The result is fewer false passes on addresses no mail service would accept.

Are there length limits?

Yes. The whole address must be 254 characters or fewer and the local part before the @ must be 64 characters or fewer, matching common mail system limits. Anything longer is treated as invalid.

Can I use it through an API?

Yes. This tool exposes an API endpoint that accepts an email string and returns whether it is valid plus any suggested correction, the same result the on-page checker shows.

Is my email private?

Yes. The check runs entirely in your browser and the address is never uploaded or stored, so you can validate personal or customer addresses without them leaving your device.

Learn more

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