= How to improve the usability of WKD even further (advanced features)

This is an extension of the [[WKD/UsabilityOfWKD|basic features to improve the usability of WKD]].

=== Offer WKD in signature area
Email clients should offer WKD there where users can see and check the signature of an email. When the need is there to validate a signature it seems obvious to look on a keyserver for the key with the specific ID. Even so there may be cases when the sender of the email did only upload a key to a WKD server and not to a keyserver. Then it makes sense to also involve WKD servers in the lookup.

Nonetheless, clients should not fetch keys automatically because this behavior could leak information to spammers.

=== Displays basic trust (Signature)
Clients should distinguish between keys without any information about their trust and keys fetched via WKD that have at least a basic trust (See the explanations of the web key directory [[EasyGpg2016/PubkeyDistributionConcept|concept]] why). It displays this trust in the area to check the signature of an email.