Mix Social Badge
StumbleUpon moved to Mix! We're currently working on releasing the information you would need to get the Mix badge/share button added to your site. If you’d like to be notified directly, please go here and we'll follow up with instructions.
If you have a custom StumbleUpon share button that you’d like to update to Mix, you may use this URL format to open the Mix “Add to Your Collection” prompt: https://mix.com/mixit?url=<URL>