Or is the attachment enough?

I'm applying for a receptionist job and they are taking resumes through email, there is no mention of a cover letter but I prepared one anyhow. Now I'm not sure what to do...I've converted both documents into PDF files (they requested that for the resume) but I was wondering what do I say in the body of the email?

I did some googling on this and it seems that some people suggest you put the cover letter in the actual body of the email. Is this right? Or should I compose a note simply stating that both the resume and cover letter are attached?

Wouldn't it be redundant to attach my cover letter and paste the content into the body of an email?

Help, I've been deliberating this for some time and I don't want to miss the chance to apply.

Thank you!