Both software available at this moment have flaws that prevent me of using full time...
I sent a few e-mails to Webmessenger last week regarding a few things to look at... Message Alert is definitly offer a lot more that Notifire, but it is not bind to actual BB profile, so it is hard to fully integrate a good solution with alert flexibility when you also want to use standard BB profile.
Active rules limited to a time base it is not enough, you must also have rules set upon a profile..... I'm not going to sleep everyday at 23h00, but when I'm switching from profile DAY to NIGHT at 22h00, it is different than my BB telling to go to sleep because it is 23h00 and you will not receive email anymore until 7h00 tmorrow morning.