How to find and edit an incorrect email address.

[Buddyboy4x44]

I use a Galaxy phone, model SM-G530W. When I use the Samsung mail function and address a mail to myself, I am offered an email address with an error in it making it unusable. Try as I may, I can find no way to locate and correct of delete that erroneous address. I suspect the mail app is drawing from somewhere other than just my contacts function. How do I correct this, please? By the way, this has happened with other addresses which come up when I address an email and I'm simply cannot locate them anywhere in order to correct them.

[RedDogRabbit]

Should be:

• Start a new email and begin typing the recipient's email address. 
• When the incorrect address appears in the autocomplete list, click the "X" or press the delete key to remove it.