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
- Supports unlimited aliases so each client relationship gets a dedicated address that can be paused or deleted without touching your real inbox
- AI-powered spam and virus filtering runs before delivery, keeping high-volume multi-client inboxes clean without manual triage
- Works as a full SMTP relay, meaning outbound mail sent on behalf of aliases stays consistent and doesn't expose your personal address
- Compatible with Gmail, Outlook, iCloud, and any IMAP provider, so no inbox migration is required when adopting the tool
- No advertising, data selling, or user profiling, which matters when client communications contain confidential or commercially sensitive content
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