I think cover letters make the most sense when they are really a letter. It feels strange to me to have a complicated hiring profile account, including basicall

I think cover letters make the most sense when they are really a letter. It feels strange to me to have a complicated hiring profile account, including basically rewriting my resume in little text boxes (though I've stopped doing that, but I still at least fill out companies and education), selecting tags, applying for multiple jobs in one go, and then including a letter as well. When asked to submit a resume by email, then the body of the email is a natural place for a "cover letter".