How to add an unsubscribe link to Klaviyo emails

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1. Klaviyo requires an unsubscribe link to be present in all emails. Why? “You also must honor a recipient’s opt-out request within 10 business days.” Including an unsubscribe link is critical to maintaining a strong sender reputation. If you don't allow recipients to opt out and decide if/when they want to stop receiving your emails, they are more likely to mark your email as spam through their inbox service. Spam complaints are serious and can significantly damage your email deliverability. If your abuse rate hits even 0.1%, mailbox providers (like Gmail, Hotmail, and Yahoo) will start to consider you a "bad sender" and take matters into their own hands, filtering your emails as spam for all recipients.

   In Opt-out handling

2. For one, it's the law. The CAN-SPAM Act requires that all commercial emails "must include a clear and conspicuous explanation of how the recipient can opt out of getting email from you in the future." You also must honor a recipient’s opt-out request within 10 business days. “If your abuse rate hits even 0.1%, mailbox providers (like Gmail, Hotmail, and Yahoo) will start to consider you a "bad sender" and take matters into their own hands, filtering your emails as spam for all recipients.” What if I forget?

   In Email deliverability benchmarks

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