Unsubscribe or report?
Does Unsubscribing Stop Spam?
Unsubscribe works for legitimate marketing relationships; malicious or deceptive spam should be handled with filtering and reporting rather than blind interaction.
There are two very different messages hiding behind the word 'spam.' One is marketing from a real organization you no longer want to hear from. The other is mail you never trusted in the first place. The right response depends on which one is in front of you.
Use unsubscribe for a sender you recognize
Legitimate marketing systems are expected to provide an opt-out path. In the US, CAN-SPAM requires commercial email to explain how recipients can stop future marketing. UK electronic-marketing rules likewise require appropriate unsubscribe or opt-out mechanisms.
A legitimate opt-out may create a suppression record
After you unsubscribe, the sender may keep a minimal record of the address on a do-not-contact list. That is not the same as continuing to market to you; it is a mechanism for remembering your preference.
Do not blindly interact with obviously suspicious mail
If the sender is deceptive, the domain is strange or the message looks like phishing, use the mail provider's spam or phishing controls instead of treating every link in the message as trustworthy. An unsubscribe label does not make a malicious message safe.
Unsubscribe is cleanup; selective exposure is prevention
Opting out helps end legitimate subscriptions you no longer want. Choosing a secondary or temporary address for low-value interactions can prevent some future clutter from reaching the primary inbox in the first place. They solve different stages of the problem.
Unsubscribe is useful, but it is not a universal anti-spam button. Trust the sender first; then choose between opting out and reporting the message.
Need an address for a short-lived interaction?
Create a private temporary inbox when you need to receive mail without automatically giving a low-stakes site your primary address.
Create temporary email