Does Buffer integrate with Tumblr?
We're sorry to say that Buffer does not currently integrate with Tumblr. For a list of supported social networks, feel free to check out this article.
That said, you are able to connect your Buffer account to Tumblr using Zapier. Zapier is a web automation app, allowing you to create connections to push data from one app to another using triggers and actions. These automations are called "Zaps". There is a ready-to-use Zap to connect Buffer and Tumblr, which you can check out here. Using this Zap, new posts added to Tumblr will be created as posts within your Buffer queue.