Being a solo founder, every day I regret using Mailchimp. So often, I'll try and implement a simple thing and it will prove hugely frustrating to implement.I'm so annoyed at the hours wasted and now that I'm 'set up' I don't want to spend the hours embedding/setting up another tool.So that you can see what I mean and you don't just think this is me being a complainer, I'll give an example -You can pick 'any' or 'all' for filtering based on criteria, e.g. if you want to automate an email to send to all people who have purchased X AND either Y or Z, you simply can't. You'd have to set up two whole automations for it.This is one quick example of something that's ridiculous, there's tonnes more but I've got no time to write it since I have to spend the next hour undoing something because of another issue their system has created...Honestly, it might seem like the easiest thing to start with, but this is one time where it massively, massively pays to start out right, otherwise you'll get embedded in a system you hate, struggling to make it work...