Deltachat desktop preview - virus total

DeltaChat Setup 1.30.1.exe - threat detection

DeltaChat Setup 1.30.0, 1.29.1, 1.29.0, 1.28.2, 1.28.0 - no detection

If that should be the case I would expect that the portable version would have this too.

also I don’t get the view / warnings that you get on the file: