Gmail has issued a series of new sender requirements for senders who send 5,000 or more messages, with enforcement beginning in February 2024. Gmail's documentation states "If you send more than 5,000 message per day, your marketing and subscribed messages must support one-click unsubscribe." Our current approach is to include an"unsubscribe or manage your preferences" link at the footer of every email that directs users to our subscription preference center, where they can subscribe or unsubscribe to our different email types or unsubscribe to all emails. We also have an operational program set up to support when users use the "unsubscribe" feature in Gmail. Is our subscription preference center approach in compliance with Gmail's new 1-click unsubscribe requirement or would we need to build a true unsubscribe link?

We also have an operational program set up to support when users use the "unsubscribe" feature in Gmail. What is this operational program doing? You don’t need to deliberately process X-List-Unsubscribe requests (clicks on the Unsubscribe button presented in the webmail UI). Marketo honors such requests automatically. The only way you would not be compatible with the new reqts is if you have something running that reverses those requests, against the user’s express wishes.