I need some advice before starting my email marketing journey (At the moment i have 0 subscribers). I'm willing to invest in people writing autoresponder series and then (at reasonable prices) buying a software license or paying ESP monthly fees. But i don't know where to start. For example can i use one solution for all my lists ? I will build and manage at least 3 different kind of lists. LISTS WHOM MIXED GOOD AND LOW QUALITY CONTENT WILL BE SENT FREQUENTLY - many single opt-in lists, sending both marketing emails and interesting content emails (Email addresses will be collected using online forms). For example weight loss / dating / make money / muscle building offers. If I'm not using Aweber or similar ESP's online forms i'll need to clean this kind of list from list-poisoning addresses ? - few double opt-in lists, sending only marketing emails (Email addresses will be collected using online forms). For example finance/credit related offers. LISTS WHOM PRETTY GOOD QUALITY CONTENT WILL BE SENT WEEKLY Sometimes a product will be promoted. Don't know if those are best to be SOI or DOI. I've used Aweber in the past but i'm afraid that sending a lot of marketing emails could lead to losing the account containing quality lists too. I read that interspire + smtp.com is as good as ESPs for what concerns inbox rate. Please let me know how you would proceed.