Before doing anything one-by-one to your Sneakemail addresses see if it can be accomplished by the "List" feature.
On the right of each Sneakemail Address listing, in any folder, or any search, or even smart folders like "Newest", is a checkbox.
After you check off a number of addresses, select "Make" in the List pulldown (at the top of the checkboxes). You will be taken to a screen where you can perform an action on all those addresses at once (delete, deactivate, change tags, change real addresses, etc)
And before you check off all the addresses, note that you have help checking those addresses. Look at the List pulldown where you can select such functionality as "Toggle" and "Between"
Sneakemail now prepends the users "real" address to the original To header as it came into Sneakemail. Some people want to filter on the "real" address, some want to filter on the Sneakemail address, and some want to see the original To header, so this should make everybody happy, but probably won't.
The filters "shred" now. If you want to shred mail, make a filter to deny it.
"Shred" is what we used to call silently disappearing email.
You don't. Not only will those fields remember the last value, but those fields will also auto-complete as you are typing.
This is an experimental feature. Users, of course, sometimes delete these addresses, but then its possible that they don't remember this and give them out again, essentially giving out a deleted Sneakemail address. So we thought, why not make them impossible to delete, instead, they are deactivated, which bounces the same as being deleted, only you can bring them back to life yourself. If you think this is a bad idea let us know.
Chances are what you are interpreting as spam *from* Sneakemail is actually normal incoming mail *through* Sneakemail to your Sneakemail address. Look at the From address - does it end with firstname.lastname@example.org? Any Sneakemail address ending with email@example.com is automatically created for you so you can anonymously reply to incoming sneakemail. If you look more closely you'll find the name of your Sneakemail address and the original From address.