Sometimes it can be complicated for even legitimate mailers to get pass through spam filters. Even the best practices, with permissions, multiple opt-in and a notarized papers approved by the end user is not exempt from having emails hit spam filters and go straight away to spam folder or get quarantined. This is known as a 'false-positive', where your genuine email gets flagged as spam and placed in spam folder and never get backs to the inbox of the receiver. What is the reason of this and what can you do about it? Let's crack down both of these concerns on how these filtration perform and what you can do to prevent them as best as possible.