Mailster has some requirements to work properly on your Joomla page, please take a minute and check them.
|Mailster (Free, Essential, Business, Ultimate)
Version 3.0 - 3.4 (Mailster 1.1+)
|PHP IMAP extension installed & enabled
PHP iconv function or mbstring extension
If you are not sure whether your server fulfils the requirements make sure to find out before purchasing as we do not issue refunds when your server does not meet the system requirements.
A good way to check if your server meets the requirements is to install the free edition of Mailster - when it is working the other product editions will work, too.
It is very easy to update Mailster to the latest version as long as you have checked that it is compatible to your environment (see system requirements).
Do not downgrade the release
Please note that it is not possible to downgrade from a later version to a previous version. For example: you must not install version 1.0 over an installation of version 1.1. This leads to unforeseen events.
This does not mean that you are not able to downgrade from a higher product edition (e.g. Mailster Ultimate) to a lower product edition (Mailster Business). This is possible of course.
Changing the product edition
You can always move from a product edition (e.g. Mailster Free) to another (e.g. Mailster Essential) by simply installing the new product edition over your current installation.