[TalkVirginia]

[QUOTE=Farcaster;2204733]Could you be more specific about what users are receiving emails that aren't supposed to and the other way around? Is that based on one of the filters, multiple, or all?
[/?QUOTE]

The way I understand it is members that are not inactive are getting emails and members that are known to be inactive are not being found, however, I have reason to believe that the people this is happening to have not updated their copy of the addon to the recent changes because the addon has been working on my development site and my live site.

Originally Posted by Farcaster

One shortcut that I can think of that might help is to use the unix timestamp natively for your comparisons. Example: UNIX_TIMESTAMP() - user_lastactivity is the difference in seconds between the two dates. Divide that by 86400 and you have your full days.

That is what this is doing. It's just using the built-in MYSQL functions instead.
TIMESTAMPDIFF(DAY, FROM_UNIXTIME(lastactivity), FROM_UNIXTIME(UNIX_TIMESTAMP())) >= ". $graceperiod

What this is doing is converting the Unix time stamp to a date then subtracting the current date/time from the date the member was last active on site. It then gets the difference in days comparing that with the integer value entered in the addon settings screen (graceperiod).