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Formsend: Fast, Reliable HTML Form Delivery Service | No-Code | 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
postmarkapp.com ↗	75 match shared topic	Postmark: Fast, Reliable Email Delivery Service \| SMTP \| API	en	email	robots llmsaihumans	emailphone	none
smtp2go.com ↗	70 match shared topic	SMTP2GO: Reliable & Scalable Email Delivery Service & API	en	email WordPress	robots llmsaihumans	emailphone	none
randallemail.com ↗	65 match shared topic	RandallEmail™ — Unified Electronic Correspondence Platform with Ephemeral Inbox Services	en	email	robotsllmsaihumans	emailphone	none
beefree.io ↗	65 match shared topic	Free Drag & Drop HTML Email Builder \| RGE Studio (Formerly Beefree)	United States~ en	email Webflow	robots llmsaihumans	emailphone	none
letterbox.tech ↗	65 match shared topic	Letterbox \| Free Contact Form Service for Any Website	en	email	robotsllmsaihumans	emailphone	none
authsmtp.com ↗	60 match shared topic	Outgoing authenticated SMTP server and email relay service (solves most SMTP and email relay errors).	en	email	robotsllmsaihumans	emailphone	none
fastmail.com ↗	60 match shared topic	Email and calendar made better \| Fastmail	en	email	robotsllmsaihumans	emailphone	none
foxyform.com ↗	60 match shared topic	A free contact form for your website - Foxyform.com	en	email	robotsllmsaihumans	emailphone	none
madmimi.com ↗	60 match shared topic	Mad Mimi Email Marketing: Create, Send, And Track HTML Email Newsletters	en	email	robotsllmsaihumans	emailphone	none
letterbird.co ↗	60 match shared topic	Letterbird – A free contact form on the web that’s Good Enough	Colombia en	email	robotsllmsaihumans	emailphone	none
rasa.io ↗	60 match shared topic	The Smart Email Platform for Associations \| rasa.io	en	email WordPress WooCommerce	robots llmsaihumans	emailphone	none
demail.us ↗	60 match shared topic	Delaware DE Email Network and Services	United States en	email	robotsllmsaihumans	emailphone	none
camail.us ↗	60 match shared topic	California CA Email Network and Services	United States en	email	robotsllmsaihumans	emailphone	none
himail.us ↗	60 match shared topic	Hawaii HI Email Network and Services	United States en	email	robotsllmsaihumans	emailphone	none
iamail.us ↗	60 match shared topic	Iowa IA Email Network and Services	United States en	email	robotsllmsaihumans	emailphone	none
ilmail.us ↗	60 match shared topic	Illinois IL Email Network and Services	United States en	email	robotsllmsaihumans	emailphone	none
indianamail.us ↗	60 match shared topic	Indiana IN Email Network and Services	United States en	email	robotsllmsaihumans	emailphone	none
idmail.us ↗	60 match shared topic	Idaho ID Email Network and Services	United States 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.