My old phone used to vibrate every few minutes when you had a new text in case you missed the first alert. I cant find anything on the droid settings for this so im assuming you need an app. Any recommendations?
I personally use the app "Missed Call" only for SMS reminders, but I have heard some people have very good luck with "Handcent" as a replacement to the default messaging program.
Another +1 for Handcent. I also like the speech-to-text functionality (while not as good as Vlingo) of Handcent. Living in a state that has banned texting while driving, it's a great tool.
I'm actually using a dumbed down version of Handcent. I really only use it for the threaded modification of the SMS and for the voice-to-text. But it's perfect for what I need it for.
if you want sms notifications without a full featured sms client like handcent use
SMS popup
it has the latest features you'll get out of sms notificatoin apps. Those features you enjoy in handcent are made possible by the open sourced source code from SMS popup.
so for those of us wanting the latest and greatest, pick up sms popup