Quote Originally Posted by nomanali View Post
Some of the benefits of dedicated IP are as follows:
It provides higher stability
It can help in reputation of email sender
And as told by David, it is may be required to install some 3rd party applications or scripts

It is true it can help with the mail reputation, but only if that account is setup to use it's dedicated IP to send email! It is a common misconception that because a site has a dedicated IP, it also is using that IP used to send email. In fact, on most shared (and dedicated) servers, the server's main IP is used to send email, not the account's dedicated IP. The server can be configured to use the site's dedicated IP, but it can create more problems than it solves for non-technical users.