[lenocinor]

Amazon used to remind me when I wasn't on smile.amazon.com back when I used to go to www.amazon.com instead sometimes. Testing it right now, it doesn't seem like they do this anymore. :(

[vatueil]

Prompts to use Amazon Smile do still appear. It's just that the reminders don't pop up every time you visit a non-smile domain.

Haven't seen any 90-day time limit as the parent comment mentions.