Description  This function returns the SMTPit Pro version as a number only. The format of this version number is always exactly 8 digits long. The first two digits represent the major version of the plugin (zerofilled). The third and fourth digits represent the minor version of the plugin (zerofilled). The fifth and sixth digits represent the update portion of the version (zerofilled). The final two digits represent a special build number or a beta version number and will usually be zeros.
As an example, for SMTPit 4.1.12, the major version is 4, the minor version is 1, the update number is 12, and there is no special build or beta version defined. So, the resulting Auto Update friendly version number would be 04011200.

