3 ms·

Are you sure that won't be removed by the email client?

• beagle3 16y ago
  Email clients avoiding going out to fetch external images, because that may be used to track user reading (when the image has been fetched, you know that the email was displayed on screen, so you can code every email you send with a unique URL, and get a date & time & ip & operating system etc. signature for every time it is read). They have no problem with inlined images, whether that is css or data: url. Thunderbird (for sure), and Gmail (I think) will display data: image urls inline; not sure about other clients.
  • dwwoelfel 16y ago
    I tested it in a few web-mail clients. The data: uri images get blocked in gmail, yahoo, hotmail, and aol web-clients. I think that they just indiscriminately block "img" tags. The css images, on the other hand, continue to display even when I put the emails into the spam folder. Edit: All of the web-clients knew how to display the data:uri image.
    • beagle3 16y ago
      I'm confused. So, data: image uris work in web clients?
      • dwwoelfel 16y ago
        Sorry, I wasn't very clear. The web client knows how to display the images, but it blocks them if it doesn't trust the sender. Basically, they work exactly the same as regular old external images.