Freezer gets moist. I would shoot for a cool dry dark place and you should always store pollen air sealed with a desiccant.@Pat Puffer, super helpful, thanks! It looks like I have a couple very nice sativa males developing, and I've been thinking how to deal with them. Your method is an excellent way to keep the pollen contained. FYI, I've heard that pollen in the freezer will last (at least?) 18 months. Also, is it a good idea to spray down the female with water after successful pollination? How long does that take?
Best bet is using it fresh. Idk how many friends I've seen try and use pollen, and it won't take because as soon as pollen becomes wet it will enoculate it and render it ineffective for use.
Hope this helps. Cheers