For me the most profitable copywriting projects are:

1. Video Scripts
2. Emails
3. Web Copy

For my business, I also factor in how easy the work is to get. Blog posts are less profitable because I charge less considering how long it takes me to write a blog post versus a one or two-minute video script. But, there is much more demand for blog posts and clients need them regularly.

Right now, I have enough blogging clients that pay me every month that I’m not actively looking for more work. If I’m approached by someone for a new project right now, I won’t take it unless it is one of those three types of projects above or a regular blogging gig, and I have to get a good vibe from the client.