To interoperate with other applications on the Fediverse, Emissary implements a number of protocols in addition to ActivityPub, which are listed below for reference.
ActivityPub Emissary supports ActivityPub federation with a wide range of servers.
RSS / Atom / JSONFeed Emissary generates RSS feeds, and can subscribe to RSS feeds in each user’s inbox.
WebSub Emissary can send and receive content notifications via WebSub
WebMentions Emissary can send and receive WebMentions
Mastodon API Emissary supports a subset of the Mastodon API which lets you use third-party Mastodon clients to post to your Emissary site. (in progress)
