Mailchimp – This software is attractive to many small businesses because it is free for up to 2,000 subscribers and 12,000 emails per month. It also has a very easy to use drag and drop interface for creating templates. However, before you jump into this option there are a few drawbacks to consider. First, while email delivery rate is decent, we do know of cases where some users have had their emails flagged as spam because they were using Mailchimp. They are also very strict about your list so if you are just getting into email marketing and your list has not been active, you may get some bounces. Mailchimp will quickly shut down your account if your bounces are too high out of the gate and while they used to allow you to contest this decision, we have seen that more recently they simply freeze the account and become unresponsive. Customer service is also limited to searching through their FAQ database or attempting to get a response via email. Finally, Mailchimp requires double opt in on any email sign up form you place on your website, which means that Mailchimp will generate an email to after someone completes your form, and unless the subscriber clicks on the link in that email, they will not be added to your list. This extra step has been shown to reduce sign up rates by 20-30% (possibly because the confirmation email was missed or itself went to spam), which is a big chunk of your list.