We just rolled out an update to the messages interface so that when you're viewing your sent items you can now select a message and press view recipients button (located in the lower right-hand corner, under the preview window) to list everyone that received your Eyejot. Not only that, we'll tell you if it was viewed! This works for all account levels, including those of you using the free version.
If you're looking for more detail and the ability to receive view alerts by email you should consider the PRO Plus version. It has a number of excellent business-class features. Details about all our versions can be found here.
