Snapchat has the most influential audience and as per stats teens make the game viral in no time and are found mostly on snapchat.
Unfortunately, Snapchat sharing has no official documentation for sharing through intents and sharing was not possible until they introduced snapkit sdk.
We have made a plugin on Asset Store which makes it easy yo use on Unity. It allows
Login to Snapchat
Get Bitmoji avatar
Share picture with custom stickers
Share video with custom stickers
Get Snapchat display name and unique id linked to your app.