How to Stop Spam Emails for Good

Spam does not arrive by accident. Every promotional message in your inbox is there because your address sits on a list somewhere — leaked, resold, or harvested automatically. Deleting messages one at a time treats the symptom. To actually bring the volume down you have to understand where those lists come from and cut off their supply.

Where spam actually comes from

• Data breaches: a service you signed up for years ago was compromised and its user database has been resold many times over. You did nothing wrong, but your address is in circulation.
• Legally sold lists: the "receive offers from our partners" checkbox you accepted without reading is precisely the consent that allows your address to be passed to third parties.
• Automated harvesting: bots crawl forums, public profiles, uploaded CVs, GitHub commits, and WHOIS records looking for any string shaped like an address.
• Dictionary attacks: spammers guess common names at the large providers. The shorter and more predictable your address, the sooner it gets hit.

Unsubscribe links: when they help and when they backfire

An unsubscribe button is only trustworthy when the sender has a reason to obey the law. A real company is obliged to remove you. A scammer does the opposite: your click confirms a human reads that address, and its resale value goes up immediately.

• Do unsubscribe from newsletters of companies you recognise and signed up for yourself.
• Do not unsubscribe from mail you never asked for. Report it as spam instead.
• Always avoid emails that demand you log in before letting you unsubscribe — that is a phishing page.

Filtering, blocking, and reporting do different things

1. Marking as spam is the strongest signal: it trains your provider's filter for you and for everyone else who received the same campaign.
2. Blocking a sender stops exactly one address. Campaigns rotate sending domains constantly, so you will always be one step behind.
3. Creating filter rules keeps the inbox visually clean, but the mail still arrives, still costs storage, and still confirms the account is alive.
4. Periodic cleanup pays off more than people expect: search for "unsubscribe" and cancel every legitimate newsletter in bulk in a single sitting.

Cut the supply at the source

Filtering acts at the end of the pipe. The only way to win over the long run is to stop your main address from reaching the list at the very first sign-up.

• One address per purpose: banking, work, and paperwork on one; everything else on a second.
• Use a temporary inbox for one-off things: downloading a PDF, trying an app, public wifi, registering on a forum.
• Keep your real address for anything where account recovery matters: bank, government, health, employer.
• Never publish your real address in visible text. If you need a public contact, dedicate a separate address to it.

How DustMail keeps your address off the lists

Every time you create a DustMail inbox to sign up instead of using your main email, you take away direct exposure of your primary address. Delivery and registration completion still depend on the sender and mail path; the service database may retain the temporary address. After expiry, DustMail stops serving the inbox through public web and API routes; retention and cleanup may happen on a different schedule, and copies held by the service or sender may remain.