I am stuck with a very simple regex but cannot fix it: https://regex101.com/r/oF6qV3/1
What I want to do is pretty simple: I want to make the regex match if ALL characters in the string match, not only a part of it.
That means in the examples provided in the link above the first line should match but the second and the third should NOT match since they include a "forbidden" @ character.
I googled about this but found too much info explaining a lot of confusing stuff to me but no answer.
Would you be able to help?