Follow up emails can help you connect with whom you are targeting and generate a better ROI without spending much.
Webinars are the cost effective alternative available for in-person meetings and allows firms to increase their reach to large target audiences. Webinars help nurture existing relationships, generate leads, drive sales, etc.
It is really difficult to get an audience to be a part of your webinar. You always need to look for a topic from your niche that is trending to be able to capture the attention of a large audience. Do some research and look for customer problems. Be relevant and informative with your webinar topic to encourage more people to attend your webinar.