Check an email address
Check whether an email address is syntactically valid and whether the domain can be reached via DNS records such as MX, A, or AAAA.
Free email validator without registration
Check an email address in a few steps. Get clear technical signals before you use an address or add it to your list.
- Free to use
- No registration
- No email sent
What we check
- Address format and structure
- Public domain and DNS records
- Matches with known disposable email domains
Technical signals, explained clearly
The result helps you assess an address. It cannot prove that a specific mailbox exists or guarantee delivery.
What would you like to check?
One address, a domain or a whole list? Choose the tool for your next step.
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Check an email address
Review the format, domain and disposable-provider signals for one address.
Check email -
Check a domain
Inspect public DNS records and email configuration for a domain.
Check domain -
Check an email list
Find format errors, duplicates and disposable domains across multiple addresses.
Check email list -
Detect disposable emails
Look up known temporary email providers and their domains.
Find disposable domains
How your email check works
From address format to provider context: three steps explain the technical result.
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Format
Read the address
We check the parts before and after the @ symbol to see whether the address has a plausible format.
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Domain
Look up the domain
Public DNS records such as MX, A and AAAA show how the domain is configured for email.
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Context
Add provider signals
Known email providers and disposable domains add context. They do not prove who owns a mailbox.
What the tools can show
- Whether the address has a technically plausible format
- Whether the domain publishes relevant public DNS signals
- Whether the domain matches known disposable-provider data
- Which checks passed and which need attention
What they cannot prove
- That a specific mailbox exists or is monitored
- That a person owns or controls the address
- That a message will reach the inbox
- That a disposable-domain match is always a sign of abuse
Learn how email validation works
Understand your result and decide what to do next. Start with the address format, explore domain records or troubleshoot delivery problems.
Explore all email guidesFrequently asked questions about Email Validator
Which tool should I use first?
Use the email checker for one address, the domain checker for public domain signals, and the provider directory when you need context about a common provider or address type.
Does a positive result guarantee delivery?
No. The tools provide technical signals, but they cannot prove mailbox ownership or guarantee that every message will be delivered.
Are the tools free to use?
Yes. The public checker pages are available without registration for individual checks.