You are 100% sure that your potential customer will notice your email if you can get past the spam filter. But you have to get past it:
For this, make sure you follow this checklist:
Set up DNS records (DKIM, DMARC, SPF)
Use a reliable provider (like Gmail)
Maintain a clean email list.
Warm up your email inbox
Maintain a good open and response rate
You can follow this step-by-step email speed guide here . If you want to test the deliverability of your emails , you can also check out Glockapps
Linkedin Message Deliverability
You can only send LinkedIn messages to your znb directory first-degree connections , that is, people you are already connected with on LinkedIn.
linkedin regular messages
You cannot send LinkedIn messages to second-degree special lead connections (people with common connections) or third-degree connections (people with no common connections).