[Users] Address book defaults to lower case

[Paul]

On Wed, 22 Mar 2017 10:11:25 +0000
Brian Morrison <bdm at fenrir.org.uk> wrote: 

> Actually folks, the local part of the address before the @ should
> have case preserved, there are people who do use capitalized
> addresses in this way.

But that is non-Standard. (Capital S used here to imply the
recognised and defined standards, rather than just common practice.)

with regards

Paul