Comment by strnisa
4 years ago
Yes, Gmail API does not support this out of the box. However, you can download the raw email, update it locally, upload the modified copy, and then delete the original. This is how the web app (Unattach) described in the blog post does it. Disclaimer: I am the author.
Any chance of an client side app?
It is a client-side app that runs inside the browser. Or do you mean something else?