To help answer this question, we (Astadia) recently had a chance to reconfirm initial tests we performed several years ago, but with some interesting new results.
We wanted to know:
Here are the results:
While these results only reflect what worked best for this particular client, I'd love to hear what metrics you have captured and what timing is working best for you.
The client was apprehensive about sending out so many invitation emails, but in this case it really paid off.
Eloqua Certified Marketing Best Practices Consultant
NOTE: We were unable to test invitations sent further than 2 weeks out as the webinar content didn't get finalized until then.