Mine are dying. I am certain that I have not overwatered them. They flop over and when I remove them from the container, the lower portions of the leaves are dripping wet.
Is It Possible to Under Water a Snake Plant?
Certified GKH Gardening Expert
If the lower portions of the leaves are saturate, then it's not under watered. This sounds more like the plant got too wet and may have root rot. This article will help deterimine if this is the case and how to fix it: https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm
To answer your first question first, you can underwater any plant - any plant will eventually die if you never water it. You have not underwatered your snake plant. The problem with snake plants is that the soil needs to be fully aerated all the way to the bottom of the pot. If you only check the soil on the top, and it stays damp in the bottom, you will lose the plant. And once snakes get rot - the mushy, wet leaves are a sign of rot - that's pretty much the end of them.