How to Edit a Word in the Spell Checker Custom Dictionary in Windows Mail

Information
The custom dictionary is the secondary dictionary for Windows Mail Spell Checker. It is the dictionary that you customize by adding your own words that you would like Spell Checker to also use while spell checking your message. This can be helpful if you misspelled a word you added to the custom dictionary from Spell Checker and you want to remove or edit the word. You may also want to add a word or add a whole list without having to do it one at a time in the normal way.

Note
The custom dictionary file used by Windows Mail is located at this
hidden system file location below
. If you have changed the default location of the WinMail stores folder, then the
UserDictionary.lex file will be located there instead.
C:\Users\(user-name)\AppData\Local\Microsoft\Windows Mail\UserDictionary.lex 
Tip
Windows Mail only has the
English (US),
French (France),
German (Germany),
Spanish (International Sort) languages available in it. If you want or need a email program for languages other than these, then you might consider using the free
Mozilla Thunderbird instead.
METHOD ONE
From Inside Windows Mail
NOTE: This only allows you to add words one at a time to the custom dictionary from within Windows Mail.
1. While you are running a spell check in Windows Mail, it comes across a word not in it's dictionary. (See screenshot below)
2. If this is the word you want to add to the dictionary, then click the
ADD button.
3. It is now added to your custom dictionary.
METHOD TWO
From Using Notepad
NOTE: This will allow you to add, delete, or edit words from the custom dictionary.
1. Open Folder Options.
2. Open the Start Menu. 3. In the white line (Start Search) area, type
notepad and press
Enter.
4. In Notepad, click on
File on the menu bar. (See screenshot below)
5. Click on
Open. (See screenshot below)
6. Click on the drop down menu arrow to the right of
Text Documents (*.txt) and change it to
All Files (*.*) instead in the bottom right corner of the Open window.
7. Navigate to this
hidden system file location below.
C:\Users\(your username)\AppData\Local\Microsoft\Windows Mail
A) Click on the UserDictionary.lex file to highlight it, then click on Open.
8. This will now open the
Userdictionay.lex file inside of Notepad from where you can now
add,
delete, or
edit any word(s) you choose.
(See Example screenshots below)
WARNING: Make sure that there are no blank lines left between the words by your deletions, additions, or edits. NOTE: If you did not add any words before in Windows Mail or manually here, this will be empty.
BEFORE Example NOTE: Deleted the one boxed in red below.
AFTER Example NOTE: Notice not to leave a blank line inbetween the words. 
9. When done, click on
File in the Notepad menu bar and click on
Save.
10. Don't forget to go back and dot
Do not show hidden files and folders instead in Folder Options.
That's it,
Shawn