Fastmail
An excellent Gmail replacement
Why I like it:
- Fast (especially background loading)
- Custom domain + alias routing
- Masked addresses
- Solid rules and routing
- No ads or tracking
- Tunable notifications
- Surprisingly pleasant calendar
The Unknown Label
Leverage you contacts to focus on important messages and verify senders:
- Add a label named Unknown
- Tag messages from senders not in contacts as Unknown
To verify a sender, add them to contacts.
Now all senders are verified at a glance and are sortable.
Bonus points for adding contact groups for additional filtering power.