A few bullet point statements in your cover letter can add graphic appeal and highlight items you want the employer to focus on. This technique can be used in a cover letter that's posted online, in an email cover note, or in a traditional hardcopy letter.
An electronic cover note with bullet points might look like this:
Dear Hiring Manager,
Your job post indicates that your new project manager will be working with three engineers. I'd like to discuss with you:
- A brief question about the project that shows you're ready to hit the ground running.
- Another relevant question about the project.
I have attached my resume, as well as inserting it below.