You never receive snail mail?
We are far more dependent on the USPS than most nerds realize.
Switched to using earth class mail which scans all my incoming postal mail, deposits checks, etc which has been a huge improvement. (and was able to get all the consequences of missing the last $1.50 of a payment I hadn't seen in the mail reversed, after a lot of letters and phone calls).
Most postal mail is spam, mixed with a few important messages.
It's too bad we can't apply baysean algos to spam snail mail. (yes, I know sender pays and all that).