Until today, the only way a subscriber could reach the portal was through the manage-subscription link at the bottom of an email. If they were already on your archive, they had no way in.

That link now lives in the archive nav too:

• Signed-in subscribers see an "Account" link that drops them into their per-newsletter portal — where they can edit their tags, update preferences, or unsubscribe.
• Everyone else sees a "Log in" link that points at the global portal sign-in page so they can pick up where they left off.

On mobile, it sits inside the existing menu alongside the other nav links. And it only shows up if you have the portal feature on — nothing changes if you don't.