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Postmark: Fast, Reliable Email Delivery Service | SMTP | API — 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
affil.biz ↗	73 match 1 shared topics	Postmark — Email delivery for web apps	en	email	robotsllmsaihumans	emailphone	none
senders.co ↗	73 match 1 shared topics	Senders - Email Deliverability Services	Colombia en	email	robots llmsaihumans	emailphone	none
webmailexpress.com ↗	70 match 1 shared topics	Webmail Express \| Email Delivery by Web Express	United States~ en	email DotNetNuke/DNN	robotsllmsaihumans	emailphone	none
1secemail.com ↗	69 match 1 shared topics	1secemail - Free & Fast Temp Mail \| Disposable Email Service \| 1secemail	en	email	robotsllmsaihumans	emailphone	none
360inbox.com ↗	69 match 1 shared topics	360Inbox - Email Deliverability & CRM Solutions	en	email	robots llmsaihumans	emailphone	none
1timemail.org ↗	69 match 1 shared topics	1TimeMail \| Free Temporary Email Service \| Disposable Email Generator	en	email	robotsllmsaihumans	emailphone	none
simplysend.dev ↗	69 match 1 shared topics	Simply Send \| Email Infrastructure for Builders	en	email	robotsllmsaihumans	emailphone	none
outboundhost.com ↗	69 match 1 shared topics	OutboundHost - 99.9% Email Deliverability for SaaS Companies	en	email	robotsllmsaihumans	emailphone	none
pagereach.com ↗	68 match 1 shared topics	MailerLogic: Enterprise Email Delivery Platform \| SendGrid Alternative	en	email Ghost	robotsllmsaihumans	emailphone	none
dishis.tech ↗	68 match 1 shared topics	DishIs Technologies - Developer APIs & Email Services	en	email	robotsllmsaihumans	emailphone	none
mailjet.be ↗	67 match 1 shared topics	Mailjet: Best Email Marketing Software & Email API for Teams	Belgium en	email WordPress WooCommerce	robotsllmsaihumans	emailphone	none
ownmail.ai ↗	67 match 1 shared topics	OwnMail - Private, Encrypted Email Service	en	email	robotsllmsaihumans	emailphone	none
jangomail.com ↗	67 match 1 shared topics	Email Marketing, API and SMTP Relay by JangoMail	en	email WordPress WooCommerce	robotsllmsaihumans	email phone	none
mildlyillegal.biz ↗	67 match 1 shared topics	Free Email Service With Private Custom Handles \| iwanta.email	en	email	robotsllmsaihumans	emailphone	none
simplyzapmail.com ↗	67 match 1 shared topics	Zapmail: Boost Email Deliverability with Affordable Google Workspace & Automated Setup	en	email	robotsllmsaihumans	emailphone	none
4post.net ↗	67 match 1 shared topics	Welcome to 4post.net personal Email Services.	en	email	robotsllmsaihumans	emailphone	none
ourzapmail.com ↗	67 match 1 shared topics	Zapmail: Boost Email Deliverability with Affordable Google Workspace & Automated Setup	en	email	robotsllmsaihumans	emailphone	none
outreachzapmail.com ↗	67 match 1 shared topics	Zapmail: Boost Email Deliverability with Affordable Google Workspace & Automated Setup	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.