Is there yet a way to set Reply-To to my pobox.com address?

When iCloud was first launched, I could not find a way to configure Mail to use iCloud email and to set the Reply To field of my outgoing messages to myxxx@pobox.com address. I was told (in this forum, I think), that it was not possible - or at least very difficult and convoluted. Instead, I'm stuck advertising to everybody my xxx@me.com address.

Since 1999 I've paid $20/year to pobox.com for "the last email address I'll ever need", and they have been true to their word so far. I'm not as confident about @mac.com @me.com. I want my outgoing mail to go via iCloud (so a copy gets saved in iCloud's Sent folder) but when people reply, I want it to be addressed to @pobox.com, which currently forwards to @me.com.

One solution involved creating a second Apple I.D. That was a mistake.

Is there a straightforward way to set my Reply-to field to whatever I like?

Thanks,

Chap