If you've signed up for a webinar and you aren't receiving links to the event in your email, it may be that you mail provider is filtering the messages. If you're able to whitelist an address in your mail system, the messages will typically come from email@example.com
However, we know that there are some mail providers that won't allow you to adjust filters or whitelist, and the messages just won't come through. One simple way around this is to create a separate mail address from a mail service that doesn't filter them. We've found that a free gmail account will allow the messages through. We realize this isn't an ideal solution, as many people don't want to have to monitor an additional email address, but it might work to allow you to attend if other methods fail.