Did you know you can require registrants to enter their email twice while registering? This can help prevent registrants from moving too quickly and inputting an incorrect email address, which:

• prevents the registrant from getting relevant transactional emails about the event (like a registration confirmation or Know Before You Go)
• creates duplicates in Salesforce, requiring manual clean-up and fragmented Contact records

As a best practice, all templates [3] now have this enabled. We also recommend any events launched in the future have "Display re-enter Email Address" enabled.

To enable this in your event:

• Navigate to your event's website >> Personal Information page.
• On the canvas, click the Email Address widget. Additional options will appear to the right. 
• In the Configuration Options section, toggle "Display re-enter Email Address" to blue/on.

• Once you're done, click Save to save the draft or click Publish to make it visible to invitees.