ygm-mail-list-frame
ygm-open-mail-list-button
ygm-close-parent-button
ygm-mail-list-dropdown
ygm-mail-list-actions-flow
ygm-open-mail-spritebutton
ygm-create-mail-spritebutton
ygm-delete-mail-spritebutton
ygm-read-mail-frame
ygm-mail-text-box
ygm-new-mail-frame
ygm-to-flow
ygm-to-label
ygm-to-dropdown
ygm-subject-flow
ygm-subject-label
ygm-subject-textfield


Data types:
Mail - a table containing the sending player's username, subject, and message. Looks like:
{message = "", player = "", subject = ""}
