I am Teruhiro Komaki of frudens Inc.
It is a blog after a long absence.
We released a beta version (0.0.1) of the solution fmOAuth at the end of last year (2017).
After releasing it, I could not develop for a while, but I have been working on development continuously as I got a little time.
We added a script to access Gmail API in this release (0.0.2).
As a result, you can download Gmail and you can send mail via API.
As for sending e-mail, I thought that it was unnecessary because I can send e-mail at the script step of the FileMaker, but I implemented it because it’s peculiar.
By the way, now it will be plain text transmission.
Gmail API Response data