Disclosure: Some links are sponsored. If you try a sponsored app, such as Cleanfox, we may earn a commission.
Plus addressing
Gmail and Outlook support name+shop@ addresses that still reach you, and you can filter on them.
Alias services
Apple's Hide My Email (with iCloud+) and similar services create forwarding addresses you can turn off.
Why it helps
If an alias starts getting spam, you know who shared it.
Want the full guide? Read the main guide. There's also an optional printable bonus, which unlocks after you try a sponsored app or offer. Unlock the bonus (sponsored).