Originally Posted by moulder3

Yes, I believe JetBlue is auto-sending these TSA emails to passengers flying through certain airports that only have one huge security checkpoint (BOS, MCO, JFK, IAD) to get to JetBlue gates. From my experience, it's true that the larger checkpoints almost exclusively seem to be the problem, as absurd as that is.

At DCA (where they have multiple, smaller security checkpoints for terminals B & C) TSA seems to ensure the line is never longer than ~30 minutes. However in BOS, where there's only one massive (cattle-herd) checkpoint for JetBlue gates, there are often only 3 lanes open (out of 8 or 10) and the lines can quickly back-up into being a 75+ minute wait.