[enum-wg] ENUM-capable email client?

* Carsten Schiefner:

> My question is: is anyone aware of a similar extension or even built-in 
> function of a mail client, so that an E.164 number would be resolved to 
> an email address?

Shouldn't this be part of the MTA, and not the MUA?  After all, it's
some kind of mail routing.