Screenshots of Evolution's "custom-header" plugin

Inserts a custom header into outgoing mails. User interface needs rethought. Plugin is currently deemed experimental.

Usability Issues

• Custom header must be inserted manually into each and every outgoing mail. There's currently no way to say "always include this header".
• Once the custom header is inserted, the composer UI gives no indication that it's there.
• The configuration UI trusts the user to maintain RFC-compliance. Also, picking from a set of choices may not be appropriate for some headers. For some headers you may want to enter free-form data.