Thanks for your response. It brought back some fond memories of BASIC, although I have to admit that I don't know how and where to invoke your subroutine.

Be that as it may, you didn't answer my question which is simply: Why does this rule

Apply this rule after the message arrives
with xxx in the recipient's address
move it to the yyy folder
and stop processing more rules

find only two qualified messages when I know there are 250 in the input folder?

I hope other visitors here will not hesitate to give an answer because "you've already answered it".