Identity
Email validator
A pre-send sanity check for any email address: syntax validation, a live DNS lookup of the domain's MX records, detection of throwaway-mail services, role-account hints, and corrections for mistyped domains like gmial.com.
An email address can be syntactically valid and still undeliverable, disposable, or mistyped in a way that routes mail to someone else. The difference matters when you run a signup form, import a mailing list, or just want your message to reach the human you think it reaches.
This validator separates those questions in one pass: it checks format, verifies whether the domain can receive mail by querying live MX records, classifies disposable and role addresses, and suggests corrections for common typos like gmial.com.
What actually determines deliverability
Format validation catches missing @ signs, unbalanced quotes and illegal characters, but it cannot know whether a domain exists or handles mail. The MX record does: if the DNS zone publishes no MX, no server has declared itself willing to accept mail for that domain regardless of how good the local part looks. Temporary-inbox services often publish valid MX but are deliberately short-lived, which is why flagging disposable providers is a separate signal from format or MX health.
Role accounts like info@, support@, admin@ and security@ are valid and deliverable yet behave differently: they map to shared inboxes owned by teams, which changes opt-in and complaint risk for bulk senders.
How to read the flags
A typical report combines four judgments: a format verdict, an MX verdict with the actual mail exchangers listed when present, a disposable classification when the domain belongs to a known throwaway operator, and a typo hint when a near-match to a common provider is detected. Missing MX on an otherwise well-formed address is the most actionable signal. Mail will bounce until the domain's administrators publish mail infrastructure.
Disposable detection matters for signup integrity: temporary inboxes let users bypass free-trial limits and rate controls, and later bounce aggressively when the address expires, which hurts sender reputation more than a single rejected form would.
- MX missing: the address will not receive mail, ask for an alternative.
- Disposable: fine for transient tests, risky for subscriptions you care about keeping.
- Role account: expect distribution to a team, not a personal inbox.
- Typo suggestion: present gmial → gmail-style fixes inline before the user submits.
Limits and privacy
Validation is not existence proofing. A fully deliverable address may still bounce because the individual mailbox is disabled, full or misspelled in the local part, confirming that requires an actual delivery attempt. The query on this page deliberately stops at DNS and classification; it does not attempt mailbox probing, which reputable mail servers treat as abuse.
All checks run server-side so third-party resolvers see our infrastructure asking, not your browser, and the address is processed in memory for this single request then discarded. Nothing is added to a list or sold.
Use the validator as a pre-send sanity filter before adding an address to a list or before resending a verification loop. For domains you operate, the DNS check also surfaces the fastest win: if the MX is missing or wrong, nothing else you fix will make mail arrive.
How it works
Enter the email address.
We verify the format and query the domain's mail (MX) records in real time.
You get a verdict plus flags for disposable domains, role inboxes, and likely typos.
Questions about this tool
Why would a correctly formatted address still fail?
Formatting and deliverability are separate things. If a domain publishes no MX records, or belongs to a temporary-inbox service, mail will bounce or vanish regardless of how valid the address looks.
What are disposable domains?
Services that hand out short-lived inboxes. Sites often blocklist them because they're used to dodge signup limits and bans.