Greeting

Hello everyone, thank you for your attention and the intention to help.

Context

I am a a software developer, and currently I am freelancing. I always want to be professional with the work I do as much as I know.

Problem

So the problem I am having is that I want to ask the client for Email delivery provider subscription and I do not know what or how to write a document to ask for. Searched online and asked AI still didn't get any final answer.

Questions

• What type of document I need to write to achieve my goal while keeping it professional?
• If not a document needed, then how does professionals do it?