Newly created variable definitions used to get 'false' as initial value, but this value must be capitalized, i.e. read 'False'.
The MessageStateSetter gets the new option 'Change subelements' to set the state of all contained elements as well.
On an exception, the file handle was left open, resulting in an undefined error when processing the message further.
When starting messages on the PostgreSQL DB, errors occurred due to the case sensitivity of tables, this error is fixed.
New Mapping function to send mails SendMail.