I made a proposal with solution idea at Privacy preserving rich links
Is there anything I could do to help out to make this happen?
I think there are a few components, like detecting links in the text (this could be a new api exposed by GitHub - deltachat/message-parser: Parsing of Links, Email adresses, simple text formatting (markdown subset), user mentions, hashtags and more in DeltaChat messages. (for desktop, for the other platforms it could also be a regular expression at first)), a rust function in chat mail core that fetches the information (icon and description) from the meta tags of the website and then a field on the messages for this rich link preview data. We would need to discuss what fields we want (probably title, thumbnail and description) and then you could start one of these steps if you want. After that it would be a matter of UI work, so timing needs to be discussed with maintainers of the UI projects.