Technologies / OpenAI / Postmark

20 companies in our data have evidence for both. Our coverage is partial, so this is not everyone.

Company	OpenAI	Postmark
attio.com
blockit.com
conveyor.com
gravityclimate.com
inevent.com
ivo.ai
knock.app
lunos.ai
oneleet.com
polsia.com
redo.com
socket.dev
usepylon.com
vetcove.com
zoko.io
happl.com
humaans.io
writesonic.com
letterdrop.com
supabase.com