Follow the link of the newest e-mail the site sent to an address: the sign in link of a member, or the link that completes a sign up. The e-mail is read from the mailbox of the test site, never from a real one.
Examples
When I follow the link e-mailed to "member@example.com"
When I follow the link e-mailed to "newcomer@example.com"
When we follow the link e-mailed to "vera@example.com"
And I follow the link e-mailed to "member@example.com"
And we follow the link e-mailed to "nora@example.com"
Pattern
When(/^(?:I |we )?follow the link e-mailed to "([^"]*)"$/, …)
Part of @webship-js/ghost-steps (github.com/webship/ghost-steps), a step pack for Webship-js 2.0.x.