Hi, I don't believe there is any connection between having the same
Apple ID and distribution of emails - unless using iCloud email
addresses. 
First of all I am assuming both of you are using the native Apple Mail
application for your emails in/out. What is below is predicated on
this assumption.
Check the Mail>Accounts panel on all devices and make sure that the
devices have the accounts for only those required - ie make sure the
Mail account on your wife's devices don't have a mail account with
your credentials.
Have you got any rules set in your Mail account to auto forward to
your Wife's email address?
Are you receiving emails intended for your wife?
Please answer these and we can go the next step to resolving this
Peter.

Kind Regards

Peter Crisp

----- Original Message -----
From: wamug@wamug.org.au
To:"WAMUG Mailing List" 
Cc:
Sent:Wed, 25 Nov 2020 13:29:59 +0800
Subject:Re: emails

 Hi Peter.I have had this issue for some time.I think it is because we
use the same Apple ID.But I don’t want to change that because it
syncs Contacts & Calendar beautifully.
But mine was with Message.So finally I found this on my
iPhone:-Settings/Message/Send & Receive = here you can select or
deselect mobile number or email.
Not sure if this will help your email issue.But if not, Mail may have
something similar in Settings.

On 25 Nov 2020, at 11:56 am, Peter Curtis  wrote:
Hi everyone
My wife receives many of my emails on her computer and ipad. As far as
I know I have not organised this and cannot seem to find out how to
stop this happening.
Can someone give me some information to be able to stop this?
Kind regards
Peter
MacBookPro Catalina 10.15,7
-- The WA Macintosh User Group Mailing List --
Archives - 
Guidelines - 
Settings & Unsubscribe - 

Regards,
Stephen Chape

 

Links:
------
[1] mailto:pe...@augold.com.au
[2] http://www.wamug.org.au/mailinglist/archives.shtml
[3] http://www.wamug.org.au/mailinglist/guidelines.shtml
[4] http://lists.wamug.org.au/listinfo/wamug.org.au-wamug

-- The WA Macintosh User Group Mailing List --
Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>