They are stored in the folder defined in account settings > composition and storage for sent mail.

Try right clicking the message and selecting open > open message in conversation to see a threaded view with the reply included.

In Folder Pane. the accounts 'Sent' folder should store sent emails. That 'Sent' folder may be called 'Sent Mail' or 'Sent Items' etc If a pop account it will be called 'Sent'. If an imap account it usually uses whatever is the name used by the server eg: 'Sent' or 'Sent Mail' or 'Sent Items' etc

In Account Settings Select 'Copies & Folders' for the account Typically the following is selected:

Select checkbox: 'Place a copy in' If pop account select 'Sent folder on' and choose same pop account. If imap account select 'Other' and choose eg: 'Sent on pop account name'

Thanks for taking the time to help me, but I cannot follow your instructions: in Account Settings there is no 'Copies & Folders' to be selected.

Thanks for taking the time to help me, but I cannot follow your instructions: in Account Settings there is no 'Copies & Folders' to be selected.

I think have another look. I have never seen an account settings without one. TO help here iso ne of my accounts as it appears in account settings.