The top of my Mail messages say
To: followed by the primary recipient, plus a link labelled
and 3 more…. Clicking that link reveals the additional recipients.
I'd rather not have to click the link, I'd like to see all recipients always.
The limit appears to be based on length, not kind. Such as, if
To: recipient's name and email address are short enough, the
Cc: recipient is then shown.
I've tried clicking
App Prefs / Viewing / Show message headers: Custom…, then clicking
+, then typing
Bcc:, but this doesn't override the apparent length limit.
Is there something I've missed? I've also reported to http://www.apple.com/feedback/macosx.html. Thank you.
Mail: Version 9.3 (3124)
Mac OS X: El Capitan: 10.11.4 (15E65)