I'm asking everyone to consider that ERAS went live over the weekend, so some programs didn't start the review process until Monday. Please be patient. I don't have as many applications to review as some programs, but I can't assess hundreds of applications in a single day (or even two), and my Selection Committee won't start inviting applicants (other than our own students) until I've completed an initial assessment so we can see the strength of the applicant pool. There may be some programs that are already sending invitations, but it's way too soon for the majority.
Also--it's too early for emails to the programs. The time it takes for me to read and respond to those is time taken away from actually assessing applications.