Been using apollo.ai and they sort of solve data and email problem. Unfortunately they stopped the warm up feature, so I am using snov for warm ups and apollo for the rest.

I loved Hubspot but Drip is also a treasure! their support team is the best, and i love how you can create workflows and rules easily and tie them to emails

Mailchimp is good for free but there are tons!

Hubspot! It is truly an all-in-one tool, but I primarily use it for marketing and sales!

Yo! for al you startup peeps, give Woodpecker a shot.

If you're running a small biz and need to shoot out some emails, check out Mailshake.