Associei meu email exchanger e nas respostas percebo que elas estão sendo duplicadas até 4x na caixa de enviadas, o que fazer?
It might be that the database is corrupt in some way. You can right-click on the Sent folder and choose Properties > Repair. If that does not work you can close eM Client and run C:\Program Files (x86)\eM Client\DbRepair.exe.
If those don’t help, then if the account is IMAP or Exchange, you can remove the account from eM Client then add it again.