With the Gmail API, if you do not provide a FROM header, the FROM header is set to the sender's email address. If I set the FROM header to any of the following forms, Gmail displays a phishing warning to my recipients, stating "Be careful with this message. Gmail could not verify that it actually came from [...]":
name <me@gmail.com>
'name' <me@gmail.com>
"name" <me@gmail.com>
where name is in exactly the same form as my display name.
Is there any way to send my display name without creating the phishing warning?