Umso - Limited, paid, easy - Example site
Carrd.co - Free, bit cumbersome AI
Handbook for great startup copywriting
Substack.com - Free forever
Beehiiv - Free until 2k subs
Google Form (we all know this one)
Tally.so - Notion like form builder
EmailOctopus has a simple sign-up form
Turn Sketches on paper into clickable prototypes