It would be really handy if there is a volume column in the keywords up/down alerts via mail. Similarly to the alerts for new keywords.

Here are two screenshots in case the attached images do not show properly-

this is how new keywords alerts looks like at the moment:

http://nimb.ws/y9KqJb

and this is my suggestion for up/down keywords alerts:

http://nimb.ws/ZESMlL

Cheers,