What does the software or service do well? It is practical in case you want to try first, to offer a free plan with which you can send a 2000 subscribers up to 12,000 emails. What could work for personal accounts, since for a company that has been oppressed by the option pays. Generates a complete report, where you can see everything you need and what you can integrate with Google Analytics, its interface is very friendly and easy to use, it really is a powerful tool. It is really easy to create a survey or a user form, it is not necessary to have an HTML knowledge and a great variety of templates that help you to be much more creative with your campaign
What does the software or service not do well? Even though the Free version of MailChimp is quite generous, subscriptions can easily be very expensive when you want to send emails and build your subscription list. It also delays me a bit that the initial configuration takes so long, I consider it very tedious. Although in general I consider it a good tool.
What do you wish you had known about the software or service before using? It has helped me to understand what we have done in the campaigns, it has also helped me to improve and has been able to save money not only to a design team but also to use a few weeks, I realized that switching to one of the payment models MailChimp would benefit me much more.