Buy once instead of SaneBox
2 apps in the directory cover what people use SaneBox for. Each one is a one-time purchase.
SaneBox costs about $65 a year. At that rate SpamSieve, the cheapest dollar-priced replacement at $39.99, pays for itself in 7 months.
Read the catch on each one before you switch — a one-time price is not automatically the better deal, and we say so where it is not.
The replacements
SpamSieve
bayesian spam filter that bolts onto the mail app you already use
$39.99 This version
Filtering only happens while your Mac is awake, so your iPhone sees unfiltered mail first
Canary Mail
ai mail client that still sells a one-time lifetime bundle
$99.99 Lifetime tier
The lifetime price is not printed on the pricing page — only Apple's listing shows $99.99