Allow for 100% custom inquiry text

The default inquiry texts are a bit harsh for some occasions. The text is not very readable and overburdens the recipient with legal terms.

From my own experience I can tell that the reception of the inquiry influences the willingness of the recipient to fulfull the request. So I think it's worthwhile to come up with a way to solve this problem.

If users could choose to write the message text themselves completely, they would be responsible for the tonality and the legal part.

Anyway, some users might still want assistance. So it's probably a good idea to show a help text on demand, which includes some recomendable and common text snippets to be used.