Unless you want to adapt MxModelreflection or the encryption module you do not have to create your own customization module. Just create navigation to those pages so you can use those modules. And the mail module only uses the encrypt and decrypt microflows so for that module you only have to fill the EncryptionKey constant. For the MxModelreflection you need to be able to reach the page MxObjects_Overview so you can set the modules you are using and refresh the objects. And do not forget the ASu_CheckMetamodel for the after startup action.
Hope this helps,
Regards,
Ronald
@Ronald Catersels
So your second sentence "Just create navigation to those pages so you can use those modules"
→ To which pages do I need access to in order to send an email?
→ The Constant ‘EncryptionKey’ → Can I e.g. set this to ‘MyNameIsJohnDoe’? = 15 characters
→ And what do I need to do with the ASu_CheckMetaModel?
it seems to me that it is easier to use specialized mail to encrypt letters, it saves you time and is convenient to use, for example, I use beeble private encrypted mail (for me it has a lot of positive points), but you have access to the Internet, where you always you can find what you need