I use open api in clay to do that, it's very cheap
I would say use clay.com to keep your CRM data clean and up to date. For email sequencer I would say email bison is the best or else you could use smartlead as well but Outreach isn't that great
clay.com
To be safe send 25 connections per account
Happy to show you around
Use heyreach, you can integrate it with clay and push the message and leads to heyreach
Konstantinos P. would be great to chat with you. Sent you a DM
Would recommend using emailbison as it has better deliverability when compared to Instantly and smartlead
Eric J. sent you a DM
Saurabh W. sent you a dm