UCI Appeal Due Date for Transfers (?)

It says:

Transfer Selection Appeals: Submit the following items in ONE package postmarked by May 15 (or two weeks after official deadline) and include student name and Application ID number on each sheet of materials submitted

Does that mean if I were to get my appeal postmarked ON May 15 I’ll be too late? I’m still gathering some additional supporting documents for my appeal so this worries me a bit

I sent my package on Saturday and got an update yesterday that they’ve received it and is pending review.

I’d highly suggest wrapping things up as soon as possible and getting it mailed. I’m sure they’ll accept it if it was postmarked on May 15th, but you should still call to make sure.