I think no.
Characters attributes are analyzed when the message is displayed on the queue, and all non "normal" characters are displayed with reverse video. (it can be a solution)
DCL VAR(&MSG) TYPE(*CHAR) LEN(30)
DCL VAR(&C) TYPE(*CHAR) LEN(1) VALUE(X'20')
CHGVAR VAR(&MSG) VALUE(&C *CAT 'Test Message' *TCAT &C)
SNDMSG MSG(&MSG) TOUSR(*SYSOPR)
Message is displayed with reverse video firstname.lastname@example.org
I wish you best Compliment of the season,with hope that you are physically and healthly alright,l do believe that this mail will reach in good condition. My name is Rebekah i saw your profile in www.itknowledgeexchange.techtarget.com and admire it, i think we can make it together, please i would like you to contact me through my email address:( email@example.com ) i will tell you more about myself, also send you my photo,as soon as you contact me back, hopping for your lovely reply soonest,