Show a verified domain, email address, or email domain for addons posted on https://addons.mozilla.org/ to make it easier for users to confirm that an extension is from the identity/organization/company it lists.
As an example, with the addon for Firefox iCloud password integration, it is difficult for users to have confidence this addon is from Apple. At present, the addon review process implicitly must be careful that an addon advertised as from company A is from an email address we know is from company A or is verified to be from company A in some way. Showing the verified domain or email address (caveats below) would add transparency to that effort and give users more confidence to install addons. A verified domain would be preferable for entities/companies like the Apple example. For individual developers without a domain, an option for the developer to show the email address might help with transparency.
Caveats:
VSCode example:
With the Microsoft VSCode extension library, some extensions are reported as having a verified domain. For example, hovering over the blue checkmark on the LLVM clangd extension page displays a popup message "LLVM has verified ownership for the domain llvm.org".