Currently, Afterlogic WebMail Pro requires manual upload of recipients' OpenPGP public keys. I’d like to request support for automatic public key discovery, similar to how modern clients like Thunderbird handle it.

Suggested functionality:

Automatically check for a recipient’s public key when composing an email.

Lookup methods:
- WKD (Web Key Directory) – https://domain/.well-known/openpgpkey/...
- Optionally fallback to trusted keyservers like https://keys.openpgp.org

Benefits:
- Improves usability and adoption of encrypted email
- Reduces manual steps for users
- Aligns with current OpenPGP standards and best practices