Many others have done an excellent job here giving a basic answer, especially Tobias Mühl. As mentioned, GMail's Api very closely matches the definition given by RFC2368 and RFC6068. This is true of the extended form of the mailto: links, but it's also true in the commonly-used forms found in the other answers. Of the five parameters, four are identical (such as to
, cc
, bcc
and body
) and one received only slight modification (su
is gmail's version of subject
).
If you want to know more about what you can do with mailTo gmail URLs, then these RFCs might be of help. Unfortunately, Google has not published any source themselves.
To clarify the parameters:
to
- Email to whosu
(gmail API) / subject
(mailTo API) - Email Titlebody
- Email Bodybcc
- Email Blind-Carbon Copycc
- Email Carbon Copy address