LinkedIn contacts outreach

I am in the I.T hardware industry. I have just under 5k LinkedIn connections This project is to go through my contacts - catagorise them. Remove some contacts by industry tyoe.. Exclude some contacnts by comoany name. and send remaining contacts an intro message through the linkedin msg system. Either somoene do it manually or if there is a platform I can use please let me know. Please note I am not ooking to generate new linkedin contacts this is just contacting my existing connections 5k.

Project ID: 40253382