You can take out an international policy directly online and, after your application has been checked and approved, will receive your insurance documents by e-mail within a few minutes. You can also use these for a visa application.
In addition to international health insurance for USA, Canada and Mexico, we also recommend that you take out a "Care Protector" accident and liability policy. You can conclude this quite conveniently together with your health insurance under Online Application for a premium from 2.00 EUR per month.