Validate syntax, detect spam, check MX records, identify temporary aliases, and scan blacklists — all free, all in one place.
Every tool you need to keep your email list clean and your sender reputation intact.
One email. Five checks. Syntax, disposable domains, typos, role-based addresses, and free provider detection — all in a single shot with a health score.
Identify temporary and throwaway email aliases from Mailinator, Guerrilla Mail, 10 Minute Mail and 2,000+ known disposable domains.
Look up the MX DNS records for any domain to verify it can actually receive email. Essential before any bulk send.
Paste your email subject or body text and detect spam trap keywords that trigger filters at Gmail, Outlook and Yahoo.
Check if your domain or IP address has been listed on any major email blacklist including Spamhaus, Barracuda and SORBS.
Connect directly to the mail server and confirm whether the specific inbox exists and is accepting mail.
Verify your domain's email authentication records are correctly set up to protect against spoofing and improve deliverability.
Upload a CSV of email addresses and get back a clean list with each address scored and categorised — valid, invalid, risky.
Paste raw email headers to diagnose delivery problems, trace message routing and identify spam scoring issues.
Identify domains configured to accept all incoming mail regardless of whether the specific mailbox exists.
We never store the emails you check. Every validation runs in your browser or is discarded immediately. Your data stays yours.
No signup, no waiting, no credits. Paste an email and get your result in under a second.
Built to respect GDPR, UK GDPR, CCPA and India's DPDP Act. No trackers, no selling your data, no nonsense.
Stop jumping between five different sites. Everything you need to maintain a healthy email list lives here.
EmailSheriff is designed to respect privacy laws across every major region.