When to send e-mail invitations for webinars?

When should you start sending e-mails to invite people to your webinar, and how many should you send? Consultant Leslie Davidson sends 5 to 6 e-mails starting no more than 3-4 weeks before the event.

"Consider sending at least a couple of e-mails in the week just prior to the webinar, when people are most likely to register," advises Davidson. She says that 30-50% of registrations come in the last week before the webinar.

Source: SIPA Hotline, 3/11, p. 7.