tmailrDeliverability · Free tools
Free email tools
No account needed. Each one gives you the underlying records, not just a score.
Domain health check
MX, SPF, DMARC, MTA-STS and TLS reporting for any domain, with the SPF ten-lookup limit counted.
Open
Email header analyzer
Paste raw headers to see the delivery path, per-hop delays and the authentication results a receiver recorded.
Open
Email address checker
Spot disposable domains, role mailboxes, Gmail dot/plus aliases and typos like gmial.com.
Open
DMARC record generator
Build a valid DMARC record with staged rollout guidance, in your browser.
OpenEmail deliverability test
Send a message and read the authentication and transport results we observed.
Open
Gmail deliverability test
Send to a real Gmail mailbox and see inbox-or-spam placement plus Gmail’s own SPF, DKIM and DMARC.
OpenTemporary inbox
A private disposable address that receives mail and then deletes itself when it expires.
OpenAbout these tools
Tools that show the record, not a score
Most free email tools hand you a number out of a hundred and stop there. These give you the actual DNS record, the raw authentication result and the real header, so you can fix the cause instead of chasing a score. Everything runs in your browser with no account, no card and nothing to install.
Check a domain
The domain health check and DMARC generator cover the DNS side, whether a domain publishes SPF, DMARC, MX, MTA-STS and TLS reporting, and how to build a DMARC record that protects it without breaking real mail.
Read a real message
The deliverability test and header analyzer work on live mail, sending a message or pasting its headers to see the delivery path, timing, TLS, and the SPF, DKIM and DMARC results a receiver actually recorded.
Check an address
The email address checker flags disposable domains, role mailboxes, Gmail dot and plus aliases and common typos like gmial.com, before a bad address ever reaches your list.
Questions people actually ask
Straight answers
Are these email tools really free?
Yes. Every checker here runs without an account, a card or a signup. We make money from the paid mailbox and masking products, not from gating a DNS lookup behind a paywall.
Which tool do I need to fix email going to spam?
Start with the deliverability test to see what a receiver actually observed, then the domain health check for the SPF, DKIM and DMARC records behind it. If you have a bounce or a raw message to read, use the header analyzer.
Do you store the domains, headers or addresses I check?
The header analyzer parses your text and throws it away; nothing is kept. Domain and address checks are ordinary DNS and validation lookups, never saved to a profile.
What is the difference between the deliverability test and the domain health check?
The domain health check reads your published DNS records (SPF, DMARC, MX, MTA-STS). The deliverability test sends a real message and reads what arrived, including DKIM signing and alignment, which only show up on a live message.