Mail tester
Send a real email to a one-time address and get a spam score out of 10: SPF, DKIM, DMARC, blocklists, spam words and broken links.
Test your emailFree tools
Check your emails before your subscribers do.
Free, no sign-up. Test a real email end to end, or just the words in it.
Spam tester
Paste your email text or HTML, or drop an .eml file. Every spam trigger word highlighted and the formatting issues filters flag, right in your browser.
Check your wordsSPF checker
Look up a domain’s SPF record, count its DNS lookups against the limit of 10 and flag weak or broken policies.
Check SPFDKIM checker
Find the DKIM public key for a domain and selector, or scan common selectors, and check the key looks strong enough.
Check DKIMDMARC checker
Read a domain’s DMARC policy, including one inherited from the parent domain, and see what to tighten next.
Check DMARCEmail validator
Check an address for syntax errors, disposable domains, typos like gmial.com, role accounts and missing MX records.
Validate an emailSubject line tester
Score a subject line out of 100 for length, spam words, caps, punctuation and emoji, with a mobile and desktop inbox preview.
Test a subject lineDomain health score
Score a sending domain out of 100: MX, SPF, DKIM, DMARC, BIMI, MTA-STS and Spamhaus, with the fix for each problem.
Check domain healthEmail signature generator
Build a click-to-copy HTML signature that pastes into Gmail, Outlook and Apple Mail, with templates and a live preview.
Create a signatureEmail list cleaner
Drop a CSV or paste addresses and classify each as valid, disposable, typo, role-based, no MX or duplicate. Download the clean and rejected lists.
Clean a listEmail extractor
Paste text, HTML or a file and pull every unique email address, including mailto: and name [at] domain [dot] com obfuscation.
Extract emailsEmail ROI calculator
Estimate revenue, ROI and break-even conversion from list size, send volume and rates, and compare the same volume on Lumail.
Calculate ROIImport your list. Send tonight.
3,000 emails a month on the free plan, no card.