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<div>Hi, Claws Mail Community,</div>
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<div>I am using Claws Mail 3.11.1 on my Debian 8 laptop. I found a problem. For my Outlook.com account, Claws Mail will occasionally receive a duplicate mail via POP3. I checked the duplicated mails by using the Fetchinfo plugin. After diff'ing, I found that the X-FETCH-UIDL of the mails are same, and the only different field is X-FETCH-TIME. It is an occasional problem for small part of mails, and it happens every few days. This problem only happens with my Outlook.com account, while other accounts (Zoho.com, 163.com, etc.) work well. Additionally, for the POP3 settings, I set to remove messages 7 days after receiving. </div>
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<div>I noticed that an another user had also post a similar report recently (title: Microsoft mail accounts frequently download duplicate messages). I think it is the same problem. Brian Morrison answered that "it might be worth checking the UID of the message". However, I can confirm that the UIDs of two duplicated mails are same. I am not sure what the problem is.</div>
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<div>Will you please help me check the problem? If necessary, I can send my duplicated mail samples to you privately.</div>
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<div>Thanks!</div>
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