Zammad Delete mail from Mailbox M365 setup

Technical assistance
1
  • Used Zammad version: 6.3.1-1724933084.dd317496.jammy
  • Used Zammad installation type: package
  • Operating system: ubuntu 22.04.04
  • Browser + version: Edge Version 128.0.2739.42

Expected behavior:

After creating the ticket, in mailbox the mail just mark as read and not deleted

Actual behavior:

as soon zammad read and create the ticket from incoming mail, delete them from mailbox

i have setup zammad with microsft 365 channel with OAuth

so what i have to look for preventing the cancellation of email from mailbox?

regards