There are many factors that impact deliverability that aren&#x27;t reflected in the type of simple test InboxTrail conducts.  Like most ESPs, your reputation builds on Mailgun as you send with us.  If for whatever reason you are experiencing a deliverability problem, you can always reach out to us and we&#x27;ll help you with any issues you have.  We support many large and fast growing customers who are all seeing a &gt;99% delivery rate.<p>Our support team is here to help 24&#x2F;7.  We have a great team here that is proud of the work we do for our customers.<p>Disclosure: I lead product development at Mailgun.