المسوّدات

The unsent drafts in the mailbox, most recently saved first, each with its id, subject, recipients and sender. query searches the subject, the sender and the start of the body. When more follow, the last line gives a pageToken: call again with the same query and that pageToken.

One draft in full: its sender, recipients, subject, the thread it replies to, the names of its attachments and its body as saved. Take the id from listDrafts.

Save a new draft without sending it, as the composer does when you close it. Every field is optional, and html wins over text when both are given. from is the address it will be sent as, and threadId makes it a reply to that thread. sendEmail with the draft id sends it later.

Change fields on a saved draft. A field you leave out keeps its value, and a list you give replaces the saved one whole, so to with one address drops the others. from null clears the sender. Take the id from listDrafts.

Delete a draft for good. It does not go to the Bin and cannot be brought back. Take the id from listDrafts.