Lifetime Mac

Buy once instead of SaneBox

SaneBox costs
$65a year. Snack plan, one mailbox, $5.42 a month paid annually. Their pricing
Ways out
2apps that do the same jobs
Cheapest to buy
$39.99SpamSieve, which pays back in 7 months
Cost nothing
0freeware or open source

Read the catch on each before you switch. A one-time price is not automatically the better deal, and we say so where it is not.

2 apps
SpamSieveBayesian spam filter that bolts onto the mail app you already use$39.99This version

Filtering only happens while your Mac is awake, so your iPhone sees unfiltered mail first

Canary MailAi mail client that still sells a one-time lifetime bundle$100Lifetime tier

Apple's store sells a $99.99 lifetime bundle; the website's Pro+ lifetime is $300 for the same name