I'm making a web app in Django that sends user an image to their email.
The way that seems most attractive to me for sending the image is in the data:uri format.
However, I tested sending this email with a data:uri image in it to my GMail account, and the email shows, but without the image!
I know that Chrome and Firefox can both open data:uri images. So it's not a browser problem. But I don't see the data:uri image in GMail at all.
Does GMail not support data:uri images? Or possibly I'm sending them wrong?
It's not supported.
Mail clients simply remove this from your post.
Here is a good reference of what can be supported: