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Strange "multi-part message in MIME format" message in the body part of my sent emails

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  • 2 have this problem
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  • Last reply by Toad-Hall

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I just noticed that if I check the SENT folder, some of the emails I sent have this text in the body part.

"This is a multi-part message in MIME format.


nIbrxwPoa2BBm60hwjHS8H3t

Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit

[HERE THE CONTENT OF THE EMAIL I SENT]"

I'm wondering if they are sent like that, what the receiver will see and if there is a way to prevent it.

The email account is using IMAP and as far as I know it happen just to that specific email account. The emails are sent using Thunderbird. I'm using the latest version of Windows on a laptop. I'm using the following Thunderbird extensions (latest versions): - Compact Headers - Send Later - Mailmindr - Quicktext

I just noticed that if I check the SENT folder, some of the emails I sent have this text in the '''body '''part. "This is a multi-part message in MIME format. --------------nIbrxwPoa2BBm60hwjHS8H3t Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit [HERE THE CONTENT OF THE EMAIL I SENT]" I'm wondering if they are sent like that, what the receiver will see and if there is a way to prevent it. The email account is using IMAP and as far as I know it happen just to that specific email account. The emails are sent using Thunderbird. I'm using the latest version of Windows on a laptop. I'm using the following Thunderbird extensions (latest versions): - Compact Headers - Send Later - Mailmindr - Quicktext
Attached screenshots

Chosen solution

See if 'Sent' folder needs a repair.

  • Right click on 'Sent' folder and select 'Properties'
  • Click on 'Repair folder'
  • click on 'OK'
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All Replies (1)

more options

Chosen Solution

See if 'Sent' folder needs a repair.

  • Right click on 'Sent' folder and select 'Properties'
  • Click on 'Repair folder'
  • click on 'OK'