Removed email account still appearing in compose

When I compose an email, an account that has been removed for some time still shows up as one of the alternative senders.

I have reinstalled EmClient and removed the database.  But this account still reappears after reinstallation and only setting up the new email account.

Hello David,

I see this issue for the first time. By any chance, isn’t this account set as Alias under any of your existing accounts? Are you able to actually send emails through it?