Direct email and mass email campaigns are essential. Having a strong email list can be make or break for a company during its first year. Generally, any email open/click is followed by a phone call from a salesperson within 24-36 hours of the email blast. Something piqued their curiosity.

I've found that social events/meetups aren't all that useful unless they're directly related to your industry. Actually, I discovered that meetups were places where I never advertised or talked about what I did; instead, I spent more time learning about everyone else.