URL to compose a message in Gmail (with full Gmail interface and specified to, bcc, subject, etc.)

I found a post that provides an example for a link which opens just a compose message window. However, I would like it to open a window with the full Gmail interface but ready to compose a new message.

Of course this works:

https://mail.google.com/mail/u/0/#compose

But, I would also like to add a subject, to, bcc, etc. I tried something like the following, but to no avail:

https://mail.google.com/mail/[email protected]&[email protected]&subject=Hey#compose

Any ideas? Thanks.

This seems to work (for now):

https://mail.google.com/mail/?view=cm&fs=1&[email protected]&su=SUBJECT&body=BODY&[email protected]

Bookmarking this URL should give you a full-screen compose window, without any distractions:

https://mail.google.com/mail/?view=cm&fs=1&tf=1

Additionally, if you want to be future-proof (see for instance how other URLs in this question stopped working) you can bookmark a link to:

mailto:

It will open your default email client and you probably already have Gmail configured for that purpose.

The GMail web client supports mailto: links

For regular @gmail.com accounts: https://mail.google.com/mail/?extsrc=mailto&url=...

For G Suite accounts on domain gsuitedomain.com: https://mail.google.com/a/gsuitedomain.com/mail/?extsrc=mailto&url=...

... needs to be replaced with a urlencoded mailto: link.

Demo: https://mail.google.com/mail/?extsrc=mailto&url=mailto%3A%3Fto%3Dsomeguy%40gmail.com%26bcc%3Dmyattorney%40gmail.com%2Cbuzzfeed%40gmail.com%26subject%3DHi%2520There%26body%3Dbody%2520goes%2520here

Learn more about mailto: links by reading RFC6068