Another question I am getting a lot is about email management and autoresponder.
At this point, I am directing all of my clients to MailerLite - a fantastic application to start with and to stay with (I just made a switch myself). Their entry-level has a free account up to 1,000 contacts and most of the paid account functionality.
It has a great, easy to understand interface, drag & drop email template builder, logic-based autoresponder, landing page builder, site builder, surveys - other words - many tools ready for your growth and expansion. Reasonable prices and great support. It would be hard to find a better combination of value and functionality.