A system may detect multiple accesses of an engagement interface from a user. The multiple accesses may include a first group of accesses performed by a first device and a second group of accesses performed by a second device. Both the first device and the second device may correspond to the user. A message may be selected from a set of messages. Moreover, the message may correspond to the engagement interface. The system may identify the first group of accesses as having a greater amount of user interaction with the engagement interface than the second group of accesses. The system may then determine that the selected message has the greatest likelihood of being read on the first device. The selected message may be communicated to the first device based on the determination.