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When I send an email Firefox inserts an old email account name which no longer exist. How do I delete that name?

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How can I delete an old cancelled email account name from automatically being in any new email I send?

How can I delete an old cancelled email account name from automatically being in any new email I send?

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  • Click the (empty) input field on the web page to open the drop down list
  • Highlight an entry in the drop down list
  • Press the Delete key (on Mac: Shift+Delete) to remove it.

Firefox will remember new form data when entered.