Seventy percent of B2B marketers plan to spend more on events this year, according to a new survey from Certain.

Event spending is a huge chunk of many B2B marketers’ budgets: 58% of respondents said they produce 50 or more events annually. But many companies might not be making the most of that investment: Over half of respondents (57%) said they take four days or longer to follow up with leads obtained at events—and that is a mistake.

Only six percent of respondents said they were able to do real-time follow up on event interactions on the same day; 17% said they followed up within a week; 16% said two weeks; 6% three to four weeks; and 4% longer than a month. Less than half of the marketers surveyed are using event automation solutions.