In 3.1.7 installed 15/01/2016 registered users don't see the email link when looking at another member's profile, only the PM send link. Admin and moderators can see and send emails.
Group permissions, group forum permissions show send email checked as YES and permission mask for user-based permissions shows green. Forum based permissions shows green for "can email topics".
User roles for registered users shows assigned standard features and can send emails under Misc tab.
When I transfer to test user permissions and highlight another user or mod or admin there is no link to send email to the user.
What setting have I missed?