outlook not syncing with shaw email provider

Hi Chris Read,

Since sending and receiving mail is working but deletions made in Outlook are not syncing back to your Shaw mailbox, while the same account syncs correctly in Apple Mail, this suggests the connection to the mailbox is established but certain mailbox actions may not be synchronizing as expected.

As a next step, please try removing and re-adding the Shaw account in Outlook. This refreshes the account configuration and can help if Outlook is using outdated synchronization settings for the mailbox. After re-adding the account, test by deleting a new message and checking whether the change is reflected on the Shaw server.

If the behavior continues, it would also be worth confirming with Shaw whether there are any specific mailbox settings or server requirements for third-party email clients that may affect delete synchronization.

Let me know if you need further assistance, feel free to ask me by clicking "Add Comment" or "Add Answer" if you cannot add comment so your response will be visible. Thanks for your effort.