Chastity and orgasm denial discussion

Since I’m managing my chastity without a keyholder nearby, I wonder about the risks and fun of trying this: What if I lock myself into my new CB3000, put the ONLY key inside a self-addressed letter, and mail it from a remote post office to my home address? Is that too risky? For example: might I need an emergency escape because of health issues or severe pain?? Are there better (anonymous) options than handing over ALL control to the postal service while still giving up total power? What a thrill it would be to watch the letter slip from my hands and slide down the chute, leaving me unaware when release might arrive. To really twist my panties I might even dare myself to walk to the mailbox dressed as my sissy self. (not just underthings darlings, but fully attired femme - perhaps an outfit I haven’t worn yet as a reward.) Eeek - how exciting! What do you think of this plan - too risky or just right?