How to Make a Company Stop Emailing You When They Won't

If you are asking how do I make a company stop emailing me, the answer is not to keep hitting an unsubscribe link that clearly is not working. It is to make one clear, dated demand through the right channel, then hold the sender to the deadline the law gives them.

This post is the assertive-request version: how to make the demand correctly the first time, so a single company stops. For the general inbox clean-up, see the sibling guide on stopping emails from companies. This is guidance, not legal advice — for a specific dispute, talk to a qualified lawyer in your country.

The short answer#

Pick one channel and use it once, in writing. Either use the sender's official unsubscribe mechanism or reply to the message with a plain opt-out sentence — not both, and not repeatedly.

Then start a deadline. In the United States the CAN-SPAM Act gives a sender up to 10 business days to stop after it receives your request. In the UK and EU you can object to direct marketing at any time, and the company must stop.

• Send one written opt-out and note the exact date and time.
• Keep the message, the confirmation, and a screenshot as evidence.
• Filter the sender so their mail is quarantined while the clock runs.
• If they keep emailing past the deadline, report the sender to the regulator.

Before you start: gather your evidence#

The whole strength of an opt-out is that you can prove you made it and prove it was ignored. Treat this like a small paper trail from the first message.

Save the original marketing email, including its full headers if your app shows them, so the sending domain is on record. When you send or submit your opt-out, screenshot it with the date visible.

• The original email and its sender domain.
• The date and time you sent your opt-out request.
• Any confirmation page or auto-reply you received.
• Every message that arrives after the legal deadline passes.

How to make the request the right way#

1. 1

   Use the official opt-out, not a reply war

   Click the unsubscribe link the message is required to include, or reply once with a clear opt-out line. A functioning opt-out mechanism must stay live for at least 30 days after the message is sent, so use it while it works.

2. 2

   Write it as a demand, not a question

   State plainly that you withdraw consent and want no further marketing to your address. Do not ask nicely for a favour — you are asserting a right, and the wording should read that way.

3. 3

   Name the law where it helps

   US recipients can cite the CAN-SPAM Act. UK and EU recipients can object under UK GDPR or GDPR Article 21, which is an absolute right for direct marketing with no balancing test.

4. 4

   Do not threaten a lawsuit you cannot bring

   Under CAN-SPAM there is no private right of action, so a US recipient cannot personally sue the sender. Threaten only what you can actually do: report them to the FTC and your state attorney general.

5. 5

   Filter them while the clock runs

   Set a rule that sends this sender's mail to a labelled folder, so you stop seeing it without deleting the evidence. Blocking alone often will not hold, because bulk senders rotate addresses inside one domain.

A template opt-out request you can copy#

This works as a reply to the email or as a note in an unsubscribe form. It asserts the right you have and stops short of the one you do not.

"I am writing to withdraw my consent to receive marketing email from you. Please remove my address from all promotional and marketing lists. This is a formal opt-out request. If you are a US sender, I expect this honoured within the 10 business days set by the CAN-SPAM Act; if you process my data in the UK or EU, treat this as an objection to direct marketing under Article 21. If marketing continues after that point, I will report this to the relevant regulator."

Keep your own copy with the date. Do not add insults or legal threats you cannot back — a calm, specific record is more useful to a regulator than an angry one.

How long a company has to stop, by region#

The deadline depends on where the sender is and where you are. These are the rules that most often apply to a single company mailing a personal address, current as of July 2026.

One difference is worth knowing. The US rule is opt-out: a company may email you until you ask it to stop, and then has a window to comply. The UK and EU rule for most marketing is closer to opt-in: the company usually needs your consent to start, and your objection to marketing must be honoured with no exceptions and no delay.

What to do when the request is ignored#

If mail keeps arriving after the deadline, you have moved from a request to a complaint, and your evidence now does the work. Do not restart the opt-out loop — that only resets the clock in the sender's favour.

In the US, report the sender at ReportFraud.ftc.gov with the sender domain and your dated proof. In the UK, complain to the ICO; in the EU, to your national data protection authority. For the full escalation ladder once a compliant request has been ignored, follow the companion post on that step.

A faster way to keep one sender out#

The manual steps above are the right way to make the demand, and you should still make it. But the filtering half — quarantining a sender that keeps mailing you while you wait out the deadline — is the part you have to redo every time the sender rotates to a new address inside its domain.

That is the mechanism AI Emaily automates. Its cold-email and spam controls match on sender behaviour and domain rather than a single address, so one rotation does not reset your filter, and a persistent sender stays quarantined without you rebuilding a rule each week. It keeps the mail out of sight while your written opt-out and its deadline do the legal work. It does not send legal demands or file complaints for you — that decision stays yours. We build AI Emaily; disclosure is why we can recommend it here honestly.