I never keep serial numbers in emails: simply because I'm loosing them, either by deleting the wrong ones or because they're hidden in archives, lost among billions of other emails :grin:

I keep the executable as long as a text file containing everything for the registration in a folder, That's how I've just retrieved my old versions of Poser, from 6 to GameDev Pro...
By luck! 
I was about to throw away the hard disk containing these, among 6 others hard disks.. phew :smile:

𝒫𝒽𝓎𝓁

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(っ◔◡◔)っ

👿 Win11 on i9-13900K@5GHz, 64GB, RoG Strix B760F Gamng, Asus Tuf Gaming RTX 4070 OC Edition, 1 TB SSD, 6+4+8TB HD
👿 Mac Mini M2, Sonoma 14.6.1, 16GB, 500GB SSD
👿 Nas 10TB
👿 Poser 13 and soon 14 ❤️