How can I achive some sort of personalization? Currently there is only one field for the "NAME" of the customer. I would add a salutation like "Mr.", "Mrs." and so on.
Here we face a problem I think. Where comes the data from? It's the Joomla user account system. There is no salutation form field pre defined.
BUT - here's the solution: Check the custom fields (inside of the user account) and make them available in the mail / message system as TAGS (e.g. [ACCOUNT_NAME-OF-CUSTOMFIELD])
Without this I only can write my mails with "Hi!", "Hello!" and similar neutral forms of salutation.