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Mailingcheck | Free email spam check software | Free email spam check software download for email spam test rate — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Email →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
123hiddensender.com ↗	70 match 1 shared topics	bulk email software free download for email marketing	en	email	robotsllmsaihumans	emailphone	none
123hiddensender.net ↗	70 match 1 shared topics	bulk email software free download for email marketing	en	email	robotsllmsaihumans	emailphone	none
inboxscore.io ↗	66 match 1 shared topics	Free Email Spam Test — Check Your Deliverability \| InboxScore	en	email	robotsllmsaihumans	emailphone	none
emailjet.be ↗	66 match 1 shared topics	Mailjet: Best Email Marketing Software & Email API for Teams	Belgium en	email WordPress WooCommerce	robotsllmsaihumans	emailphone	none
1timemail.org ↗	65 match 1 shared topics	1TimeMail \| Free Temporary Email Service \| Disposable Email Generator	en	email	robotsllmsaihumans	emailphone	none
toremail.com ↗	65 match 1 shared topics	Free Email Validation Checker \| Tor Email	en	email	robotsllmsaihumans	emailphone	none
inboxradar.io ↗	65 match 1 shared topics	InboxRadar — Free Email Deliverability Checker \| Is Your Email Landing in Spam?	en	email	robotsllmsaihumans	emailphone	none
32bit.com ↗	65 match 1 shared topics	Free Bulk Email Software	en	email	robotsllmsaihumans	emailphone	none
bounceless.io ↗	65 match 1 shared topics	Free Email Checker & Bulk Email List Verifier	en	email	robotsllmsaihumans	emailphone	partial · 8
1secemail.com ↗	65 match 1 shared topics	1secemail - Free & Fast Temp Mail \| Disposable Email Service \| 1secemail	en	email	robotsllmsaihumans	emailphone	none
blastmy.com ↗	64 match 1 shared topics	Wave Evolution - email marketing \| email blast \| email marketing software malaysia \| bulk email malaysia \| mass email malaysia \| bulk email marketing malaysia \| email blasting \| sending bulk email malaysia \| free email templates \| email marketing company malaysia \| email blasting software malaysia \|	en	email	robotsllmsaihumans	emailphone	none
topmailmendoutbound.com ↗	64 match 1 shared topics	Mailmend: The Best Email Deliverability Software	en	email	robotsllmsaihumans	emailphone	none
sanitizeemail.com ↗	64 match 1 shared topics	SanitizeEmail for Bulk Email Validation and Clean Email List	en	email	robotsllmsaihumans	email phone	none
100topfreeemail.com ↗	64 match 1 shared topics	100 Top Free Email Sites	en	email	robotsllmsaihumans	emailphone	none
100topfreeemailsites.com ↗	64 match 1 shared topics	100 Top Free Email Sites	en	email	robotsllmsaihumans	emailphone	none
blastsg.com ↗	64 match 1 shared topics	BlastSG.com - singapore email marketing singapore email marketing software singapore email blast singapore email marketing company singapore email database singapore email list singapore	en	email	robotsllmsaihumans	emailphone	none
inboxsign.com ↗	64 match 1 shared topics	Free Email Signature Generator \| Professional Templates for Gmail Outlook Apple Mail	en	email	robotsllmsaihumans	emailphone	none
inboxmedic.com ↗	64 match 1 shared topics	Inbox Medic - Free Email Testing Tools - SPF, DKIM, DMARC, MX Checker \| Inbox Medic	en	email	robotsllmsaihumans	emailphone	partial · 8

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.