Where can I set up the communications preferences on my Yahoo Answers account?

It used to be possible to set up communications preferences for Yahoo Answers accounts so that I could enable or disable communication using Instant Messenger or Email. I never used the former, but the latter was excellent as it allowed someone to email me and for me to reply without the actual email addresses being revealed.

The email mechanism required that both the sender and the recipient had the option enabled.

I have tried to email somebody today, who I am sure I have emailed previously, but the option did not appear. There was just Block or Follow, but no Email option. When I went to check my setting for this I could not find it. Has the option been moved to a new location or have the clowns at Yahoo removed what was a very useful feature?

If it has simply been moved, where is the setting now?

Thanks to anyone who can provide the definitive answer.