It should only include yourself in the reply to all if the address the message was sent to is not the same as the account address. ... You have one or more contacts in Outlook for your own GAL entry and one contains the wrong address. Outlook is resolving to the copy in your Contacts, not the GAL. (Exchange mailboxes only)

How do I remove myself from Reply All?

Select the tab at the top with three dots, also known as the “more” tab. From that drop-down menu, select Mute. Voila! Messages in that thread will now be archived unless they are emailed to you and no one else.

Why does Outlook automatically Cc me on Reply All?

Now every time that you send a message, whether it is a new message, a reply, or a message that you are forwarding, the people or distribution lists that you specified in the rule will automatically be added as Cc recipients.