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In an on boarding process I need a user to link their Twitter account and become a paid member. Although I explain both are required, what would you ask first? First make people pay, and then ask to link their Twitter, or vice versa?

Magic links have become a popular authentication method. People enter their email address and receive a one-time link to sign in. No need for passwords anymore. It's not without its problems though. So I'm curious what some of the best practices are. I'd especially like to hear from people who'v...