ActiveCampaign (AC) is an easy and effective marketing automation tool for small businesses. I have implemented AC in the marketing department in order to send different and multiple types of campaigns (simple newsletters, invites, nurturing campaigns) and also to create lead funnel automations. If you have a little customer base (<5000 contacts), AC is a good tool and it is easy to use for lead generation.
We have selected ActiveCampaign because it has all the basic features in marketing automation we wanted. It is a cheap and effective Marketing Automation software when you are a small business. We simply wanted a tool powerful enough to help us increase the number of new leads for a very low cost.
ActiveCampaign is well suited for basic scenarios such as daily emailing, follow-up emails, invites, thank you emails or reminders. If you want to create nurturing campaigns with multiple possibilities, AC is also pretty effective with the automation builder. If you want to do very personalized automated email campaigns, ActiveCampaign might not be the best tool to use.