Which all data fields can I send to social networks ?

In free plugins

You may use Post Title, Post Content, Post Excerpt, Permalink and Blog Title.

smap fields free

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 and Shortlink.

smap fields

Also in the premium plugin you can limit the title, content and excerpt 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.