Allow Email tool to send e-mails also when errors occurred in the workflow

[haraldharders]

The Email tool does not send out e-mails after an error occurred in the workflow. Since this usually is a good thing, it sometimes would be helpful being able to send out e-mails also in case of errors.

In particular, I want to send out an e-mail with a detailed and formatted custom error message.

Thus, please add a check box "Also send mail in case of errors" which is off by default.

Side note: The Event "Send mail After Run With Errors" does not work for me because it is too inflexible. Just sending out the OutputLog is not helpful because the error message might be hidden after hundreds of rows.