Propsect.io does one very specific part of marketing automation (finding cold leads and engaging them to become warm), but it does it very well. One particularly good feature about Prospect.io that’s not easy to find elsewhere is that the automation emails can be triggered directly from your mail server (e.g. G Suite or Microsoft Exchange) so your emails appear identical to if you had sent them manually.
My first thought was how easy Ontraport was to get started with compared to another marketing automation company I had just tried. Recurring payments were to set up. There was no initial training cost, and you could sign up as a customer directly from their website. On top of this, everything was split testable without needing a strange workaround.
Userfox works primarily with tech companies, so if you’re in the industry, you’ll be in good company. Like Customer.io, userfox has a lightweight interface and is designed to trigger emails based on events (rather than just pageviews), so if that’s important to you, userfox is a great choice. You might also consider userfox if you’re already using AdRoll, as the acquisition likely means a tight integration between the two products in the future.
Eventually, your company’s marketing program will get so big that you can’t — possibly — manage everything via Outlook, Word, and Excel spreadsheets. You could always hire a team of marketing specialists, but eventually, you’re going to start wasting cash on redundant tasks like emailing new customers, setting up social media-to-email programs, and emailing your users every time you post blog content.