This task can be performed using Cleanbox
Email aliases, AI spam filtering, and a full SMTP relay
Best product for this task
Cleanbox
productivity
Cleanbox sits between the internet and your inbox. Every incoming email goes through spam scoring, virus scanning, AI classification, and your own rules before delivery. Create unlimited aliases that forward to your real inbox, build custom filters, and use Cleanbox as a complete SMTP relay. Works with Gmail, Outlook, iCloud, Yahoo, or any IMAP provider, no migration needed. Privacy-first: no advertising, no data selling, no user profiling.

What to expect from an ideal product
- Creates unlimited email aliases that forward to your existing inbox without requiring a mailbox migration
- Applies AI-based spam scoring and virus scanning to every inbound message before it reaches you
- Supports custom filtering rules so you control delivery logic beyond what automated classification provides
- Functions as a full SMTP relay, meaning outbound mail can also route through the service for consistent privacy
- Works with Gmail, Outlook, iCloud, Yahoo, and any IMAP provider, so no single-provider lock-in exists
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