Jenn at TweetReach
posted this on April 05, 2010 20:26
Due to API limits from Twitter, our snapshot reports can only search for tweets that are up to approximately one week old (measured from the day you run the report). We can't access anything older than that in a snapshot report. And that number is only an guideline - depending on Twitter's performance at any given time, we may find more or less than that. Check here for our current tweet time limits.
Also, we now have access to older tweets through another process. If you'd like a custom historical report with full tweet coverage, please request a quote here.
If you're going to be running a campaign that lasts more than one week, you should set up a Tracker through TweetReach Pro, which can monitor unlimited tweets for unlimited time. Trackers are perfect for ongoing or longer-term measurment.