A: Thank you for posting the first question on our deal.

These tools can be directly integrated with Boost if they can create HTML forms.
HTML form integration works just as effectively as direct API integration.
I believe Moosend can. Not too sure about Snov.io.

For direct API integrations, you can suggest the features here so other users can vote on them:
https://feedback.userreport.com/b252f0d2-2493-483e-be9f-a0c59820b72e/#ideas/popular

If they get enough traction, we will consider adding to our roadmap.

I hope that answers your questions. If there's anything else please let me know.