Send them invites for your webinars or whitepapers. Send an email regarding it, and wait for their response on it.
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Webinars are the most efficient and highly effective tool for marketing. It is a powerful sales tool and the best way of providing all types of information to concerned people.
An on-demand presentation is a pre-recorded webinar which can be viewed by your audience any time they'd like. Unlike webinars, on-demand presentations do not require a large number of internal links.
Try to attract customers by offering them something in return for registering and attending your webinar. You can run a contest related to the webinar using social media.
Tips to make your webinar more successful