From the list you provided, the "Stayflat Rigid Mailers," "utility mailers", and "Tyvek Envelopes" would protect the photo the most. I'd stay away from the bubble mailers or anything with padding. They will encourage bending of the photo.

For future reference, please post questions like this in the "Collecting Help" forum.

[i]With that said, would a moderator kindly move this post to the "Collecting Help" forum[/i]

Which should i use:Bubble Mailers
Padded Mailers
Stayflat Rigid Mailers
Poly Envelopes
Corrugated Envelopes
Reinforced Envelopes
Utility Mailers
Tyvek Envelopes

A website on ideas is http://www.packagingsupplies.com/index.cfm


THANKS