Developer credits
Git commits in Moodle 3.1.18 by Michael Hawkins
commit 7ea1b25cac963f6727d8e89f2d678f47308b43cb Author: Michael Hawkins <michaelh@moodle.com> Date: Mon, 18 Mar 2019 15:23:59 +0800 Tag: v3.1.18 MDL-61738 messageinbound: Fix quota checks & filesize for email uploads