Hi. I have Thunderbird installed on my Galaxy S25 phone and Galaxy Tab S8 tablet. If I send an email from either of those 2 devices 2 copies of the same message appear in the 'Sent Items' folder. Two messages also appear in the 'Sent Items' folder of Outlook on my PC. If I send a message from Outlook on my PC only 1 message appears (as it should do). Is there something that can be done to correct this so that the message only appears once? Kind regards, Paul Goddard