All perfect praise be to Allah, the Lord of the worlds. I testify that there is none worthy of worship except Allah and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
When a sender writes in these emails, "is a trust upon you" and the like of phrases suggesting an obligation, then it is not incumbent upon you to do anything in this regard. They are merely trying to intimidate people with such words, which are considered idle and worthless and entail nothing on your part.
Allah knows best.