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Esmtps alternatives & similar sites

www.ESMTPS.com Information — 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 Information And Network Security →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
siteformrelay.com ↗	62 match 2 shared topics	Site Form Relay	en	email	robotsllmsaihumans	emailphone	none
atommail.net ↗	62 match 2 shared topics	Proton Mail: Get a free email account with privacy and encryption \| Proton	en	information-and-network-security	robotsllmsaihumans	emailphone	none
protonmail.com ↗	62 match 2 shared topics	Proton Mail: Get a free email account with privacy and encryption \| Proton	en	information-and-network-security	robotsllmsaihumans	emailphone	none
proxiedmail.com ↗	62 match 2 shared topics	ProxiedMail \| proxy-email service	en	email	robots llmsaihumans	emailphone	none
mypatriotmail.org ↗	61 match 2 shared topics	MyPatriotMail \| Secure Email	en	information-and-network-security	robotsllmsaihumans	emailphone	none
vppbox.com ↗	61 match 2 shared topics	VppBox — Zero-Knowledge Private Postbox	en	email Paddle	robotsllmsaihumans	emailphone	none
gaziw.com ↗	61 match 2 shared topics	Gaziw.com \| Reliable Gateway to Secure Temporary Messaging	en	information-and-network-security	robotsllmsaihumans	emailphone	none
myhushmailnow.com ↗	61 match 2 shared topics	Hushmail: Encrypted Email and E-Signable Forms	Canada~ en	email HubSpot	robotsllmsaihumans	emailphone	none
prowesstrack.com ↗	61 match 2 shared topics	SendGrade — Email security audit for your domain	en	information-and-network-security	robotsllmsaihumans	emailphone	none
proxmail.org ↗	61 match 2 shared topics	SimpleLogin \| Open source anonymous email service	en	information-and-network-security	robotsllmsaihumans	emailphone	partial · 8
atabuse.com ↗	61 match 2 shared topics	AtAbuse \| Anti-Abuse Security Tools & Resources	en	information-and-network-security	robotsllmsaihumans	emailphone	none
skiff.com ↗	61 match 2 shared topics	Skiff - Private, encrypted, secure email - 10 GB free	en	email Sanity	robotsllmsaihumans	emailphone	none
cryptup.org ↗	61 match 2 shared topics	FlowCrypt: PGP Encryption for Gmail	en	information-and-network-security	robots llmsaihumans	emailphone	none
cryptup.net ↗	61 match 2 shared topics	FlowCrypt: PGP Encryption for Gmail	en	information-and-network-security	robots llmsaihumans	emailphone	none
myprivatemail.io ↗	61 match 2 shared topics	myprivatemail.io — Zero-Knowledge Encrypted Email	en	email	robotsllmsaihumans	emailphone	none
vpnemail.com ↗	61 match 2 shared topics	Secure webmail client	en	email	robotsllmsaihumans	emailphone	none
protonfox.com ↗	61 match 2 shared topics	Sign In — ProtonFox	en	email	robotsllmsaihumans	emailphone	none
mynigma.org ↗	61 match 2 shared topics	Mynigma - Safe email made simple	en	information-and-network-security	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.