It's easy to add a pre-filled subject, body and CC/BCC in mailto:
links.
It would be useful for website owners to know if an email originated from their website, or from an email address published/received elsewhere: another website, a business card, flyer, poster, etc.
What is a good, non-obtrusive, and user-friendly practice for putting mailto:
to use for acheiving this on a company website?
It seems the pre-filling the body is too much, but perhaps something in the subject? For example:
Email from Company Website
Or is that too obtrusive when it comes to UX? Obviously, users could modify/remove this as they wish. Another idea:
Company Query
Or, perhaps better:
Company Inquiry
It'd also be useful to identify which page an email request came from — if the email is on multiple ones — could be done in the same way?
N.B. Using different email addresses (with redirection) on the various pages is definitely a solution to look into, but this question is concerned specifically with pre-filling the subject-line and other fields and the resulting UX considerations.