How do I auto login a member from an Infusionsoft Email?

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