What changed

Three requirements sit underneath almost every email rule worldwide: prove consent, identify yourself honestly, and make opting out effortless. Consent means the person asked for your mail — a checkbox they ticked, a form they submitted, a purchase they made with clear notice. Silence is not consent. Identification means a real business name and postal address, a real reply-to, and a subject line that matches the content. Opt-out means one click, honored within days, no login required. A frequent mistake is assuming a privacy policy on your website satisfies the requirement to prove consent for a specific list. Consent needs to be tied to the actual action a person took — the exact form, the exact checkbox, the exact date — not a general statement buried in legal text nobody reads. If you cannot point to that specific action for a contact, treat the consent as missing rather than assumed. To decide how strict to be with an uncertain contact, imagine explaining the interaction to that person directly. If you cannot honestly say "you asked for this," it is safer to leave them off the list or send one low-pressure request to opt back in. This costs some contacts in the short term but protects the sending reputation that every other message depends on. You can judge a compliant setup by testing it yourself: unsubscribe from your own list and time how long it takes to actually stop receiving mail. A good setup takes one click and confirms immediately. A poor one requires logging in, emailing someone, or waiting through another scheduled send, and each of those frictions pushes people toward reporting you as spam instead. When something slips through — an old contact gets a message they never agreed to receive — respond quickly and plainly rather than defending the send. Apologize, confirm they are removed, and check whether the same gap could affect other contacts on the same list. A fast, honest fix rarely does lasting damage; ignoring the complaint or arguing about intent usually does.

Key takeaways

• Consent means the person asked for your mail — a checkbox they ticked, a form they submitted, a purchase they made with clear notice.
• Identification means a real business name and postal address, a real reply-to, and a subject line that matches the content.
• Any friction pushes recipients to the spam button instead.

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