Include this for the url where you want users to click to auto log in:
http://example.com/?memb_autologin=yes&Id=~Contact.Id~&Email=~Contact.Email~&auth_key=yourauthkey&redir=http://example.com/silver-video-2/
Example Use With Redirect to a specific page after log in:
<a href="http://example.com/?memb_autologin=yes&Id=~Contact.Id~&Email=~Contact.Email~&auth_key=yourauthkey&redir=http://example.com/silver-video-2/"> Log In Automatically Here </a>
To auto log-in a user from Customerhub use this for the link url:
http://example.com/?memb_autologin=yes&Id={{user.infusion_id}}&Email={{user.email}}&auth_key=yourauthkey&redir=http://example.com/silver-home
Read more on how Memberium autologin links work:
http://keap.memberium.com/autologin