See original idea by gmunhoz https://planet4.greenpeace.org/idea/gravity-forms-thank-you-message-customization/

It would be nice if we could customize each share message by channel:

WhatsApp: it could be a copy of the twitter but often Tweets uses @ or other formatting that doesn’t make sense for WhatsApp. If we could separate this message it would be great

Twitter: it would be good that only the info added on the share text field + URL were created (right now the tweet is composed by NRO name + message +‘, via @ NRO’ + URL); that way if someone wants to tag the twitter account they could add it via share text field;

Facebook: it uses the page tags so nothing to add here.

Email: not sure which info is pulled to subject but it appears to be NRO name only. this could be left blank or we could have a field to customize a subject.