Which all data fields can I send to social networks ?

In free plugins

You may use Post Title, Post Content, Post Excerpt, Permalink, Blog Title, User Nice Name, Post ID, Post Publish Date, and User Display Name.

In the settings page, we can see this option in the “Message format for posting”.

To enter the post title in the social media, use the variable {POST_TITLE} in the message format and your post title will be displayed in the social media.

In XYZ SMAP Premium plugin

You can use Post Title, Post Content, Post Excerpt, Permalink, Blog Title, User Nicename, Post ID, Post Tags, Post Category, Shortlink, Post Publish Date, User Display Name, and Postmeta.

Also in the premium plugin, you can limit the title, content, excerpt, and tags to social media using the below format.

{POST_CONTENT:L-2} – Here 2 lines from the content are published to social media.

{POST_CONTENT:W-5} – Here 5 words from the content are published to social media.

{POST_TAGS:3} – Here 3 tags from post tags can be published to social media.