Emails are one of my favorite methods of communicating with users. Its works as a quick test for product validation. It works well at one->some->many-> all. Its still highly effective even as much noise as we receive in our inboxes. Over the years I’ve tried a lot of email tools from custom built solutions, to newer entrants that help around drip actions (intercom.io and customer.io), to more “enterprise” tools such as Marketo. While I have varying opinions on all of those, I still find myself coming back to a simple one off script setup to deliver clear concise emails.