How to filter spam emails automatically before they reach your inbox

How to filter spam emails automatically before they reach your inbox

This task can be performed using Cleanbox

Email aliases, AI spam filtering, and a full SMTP relay

Filter spam before delivery

Route incoming mail through a spam filter before it reaches your provider. Keep your current address and inbox, but place a filtering relay or forwarding service in front so messages are scanned, classified, and checked against rules first.

Start with conservative blocking. Quarantine high-confidence spam, flag uncertain messages, and allow trusted senders. Test newsletters, receipts, password resets, and attachments, then review the quarantine daily until false positives are rare.

Best product for this task

Cleanb

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.

hero-img

What to expect from an ideal product

  1. Cleanbox sits between the internet and your inbox, so every email gets scanned for spam and viruses before it even reaches you
  2. You can create unlimited email aliases that forward to your real inbox, keeping your actual address private and away from spammers
  3. Built-in AI classification sorts incoming mail automatically, and you can add your own rules on top of that for anything the AI might miss
  4. It works with Gmail, Outlook, iCloud, Yahoo, and any other IMAP provider, so there's nothing to migrate or switch around
  5. No ads, no data selling, no profiling — your email habits stay yours, which also means less risk of your data being used to target you

More about avoiding false positives

The safest rollout separates obvious junk from uncertain mail. Treat quarantine review as an email security check, especially while rules and sender allowlists are still being tuned.

  • Allowlist critical senders and domains before enabling automatic rejection.
  • Quarantine borderline scores instead of deleting messages.
  • Inspect authentication failures carefully, since legitimate forwarded mail can fail SPF.

More topics related to Cleanbox

Featured Today

Hackathon
tiun-66bd87
tiun-66bd87-logo

tiun

Payments backend for indie hackers

All-in-one: Auth, payments & DB

Single command: MCP, Skills

Built for developers.

Merchant of Record. Better fees.

Join the Microlaunch builder community

Get product updates, weekly standouts, and founder deals.