How to remove a redundant email ADDRESS from Windows 10 MAIL

Hello Jim

The reason that you're running into this is because the Win10 Mail app constructs the auto-complete cache from all emails in the mailbox whereas am going to guess that the instructions you've found regarding the "X" etc relates to another email client.

The answer to your question: you need to remove any and all emails that may contain the email address you want to remove which means in "every" email folder that a message may be contained in. Not saying this is the easiest approach ever devised but it is what it is.

Note: This is a user-to-user support forum. Don't work for Microsoft and have no input to Microsoft policies and procedures. Can only provide the information applicable to the question/issue posed.

Karl.

Thanks for the reply, but I did say that I had NO ACCESS to the YAHOO account.

I can see no possible solution to my problem following your suggestion due to the above comment as to removing the emails.

Please advise if there is a way of accessing  the cache and once that is done perhaps by deleting that cache from time to time that will be the route to follow.

Thanks

Kind regards

Jim

Hello Karl,

Thank you for your kind and candid reply regarding the problem that happens when using Microsoft Mail as a "link" for all email arriving at any destination.

The problem as I now see it is that NO MATTER WHAT EMAIL ADDRESSES ARE INCLUDED in the email RECEIVED by the person who is supposed to receive that given email  - IF THERE ARE ADDITIONAL EMAIL ADDRESSES INCLUDED IN THE HEADER THEN MAIL WILL "GRAB" ALL OF THESE ADDRESSES AS WELL AS THE ONE INTENDED FOR THE RECIPIANT.

I have proved this as when I looked at other emails received I noticed a number of additional email addresses on the header. 

To my horror I then tried a "dummy" send to any of these "additional" addresses and found that the MAIL "system" had included them in my address book WITHOUT MY KNOWING.

This is surely a breach in security and data protection - but NOT one for this "Assembly" 

To clear ALL these out will be a really MAJOR task. and as I see it the ONLY way would be to STOP using MAIL ALTOGETHER AS A MEANS TO CO-ORDINATE MAILS BY SYNCING.

THANKS AGAIN FOR ALL YOUR KIND HELP. It IS appreciated.

Regards

Jim

A company sends out an email as a "Group Header" to all the staff and is unwise to make this list as a continuous group of addresses (instead of a single to each member of staff as this method is both tedious and time consuming) and a member of the staff then forwards their copy to another party (not realizing that it contains ALL the other staff member's addresses) then that forwarded mail will be a breach of the company's security.

That is what I meant by security breach. 

Having said that it would be both the company concerned for not taking precautions as well as the staff member for their actions in forwarding the mail on when it was solely directed to them and their fellow colleagues.

Having discussed this at length now. To stop this potential "grabbing of addresses, do you know any way of preventing this (other than ceasing the use of Mail ?

Kind regards

Jim