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Outgoing authenticated SMTP server and email relay service (solves most SMTP and email relay errors). — 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
authsmtp.com ↗	85 match 1 shared topics	Outgoing authenticated SMTP server and email relay service (solves most SMTP and email relay errors).	en	email	robotsllmsaihumans	emailphone	none
internet-mail-relay.co.uk ↗	68 match 1 shared topics	Internet Mail Relay Service (SMTP Relay)	United Kingdom en	email Joomla	robotsllmsaihumans	emailphone	partial · 2
turbo-smtp.com ↗	66 match 1 shared topics	turboSMTP mail server - Professional SMTP Service Provider	en	email WordPress	robotsllmsaihumans	emailphone	none
turbosmtp.com ↗	66 match 1 shared topics	turboSMTP mail server - Professional SMTP Service Provider	en	email WordPress	robotsllmsaihumans	emailphone	none
serversmtp.com ↗	66 match 1 shared topics	turboSMTP mail server - Professional SMTP Service Provider	en	email WordPress	robotsllmsaihumans	emailphone	none
serveraddress.com ↗	66 match 1 shared topics	ServerAddress - Professional DNS and Email Backup Services	en	email	robotsllmsaihumans	emailphone	none
catchallverify.com ↗	64 match 1 shared topics	Email Verification Service & Software \| Emailable	en	email	robotsllmsaihumans	emailphone	none
1timemail.org ↗	64 match 1 shared topics	1TimeMail \| Free Temporary Email Service \| Disposable Email Generator	en	email	robotsllmsaihumans	emailphone	none
4email.com ↗	64 match 1 shared topics	4Email -- Search Engine for Email Products, Services, and Information	en	email	robotsllmsaihumans	emailphone	none
gsoftmail.com ↗	64 match 1 shared topics	GsoftMail – Private Email Service	en	email WordPress	robotsllmsaihumans	emailphone	none
philemail.com ↗	64 match 1 shared topics	PhilEmail — Transactional Email Service for the Philippines	en	email	robotsllmsaihumans	emailphone	none
reachmail.net ↗	64 match 1 shared topics	Email Marketing Services \| Email Marketing Software \| ReachMail	United States~ en	email	robotsllmsaihumans	email phone	none
reachmail.info ↗	64 match 1 shared topics	Email Marketing Services \| Email Marketing Software \| ReachMail	United States~ en	email	robotsllmsaihumans	email phone	none
offshore-smtp.com ↗	64 match 1 shared topics	EvoSender - #1 Offshore SMTP Server & High-Performance Email Infrastructure	en	email	robotsllmsaihumans	emailphone	none
tullemail.com ↗	64 match 1 shared topics	Tullemail.com - Temporary Email Service	en	email	robotsllmsaihumans	emailphone	none
1dollaremail.com ↗	64 match 1 shared topics	$1 Email Service For 30 Days	en	email Wix	robotsllmsaihumans	emailphone	none
1likesub.com ↗	64 match 1 shared topics	TempMail - Free Temporary Email Service	en	email	robotsllmsaihumans	emailphone	partial · 8
4memail.com ↗	64 match 1 shared topics	Temp Mails \| 4meMail - The Best Temp Email Service	en	email	robotsllmsaihumans	emailphone	none

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.