The ease of use was one thing I liked most about scribless! It's also super cheap to send out mass emails/letters compared other email providers like Mailchimp or Constant Contact that cost hundreds per month just in order to get them up running so you don't have any data issues with your list when it comes time do run campaigns etc - all this can be done through squillies at zero costs if needed too as well which saves SO much money over those expensive services mentioned above!! They are very reliable but they could improve their customer service department by some margin since sometimes we need help from support team rather than waiting days before someone gets back our questions (although usually its sorted pretty quickly). But overall not really anything bad i would say except maybe being able to add more templates? We mainly sent newsletters / updates via snailmail however there were times where people wanted something hand written instead due how easy & quick writing.