1781943 - Thunderbird doesn't show the attachments of some messages (but webmail and other clients do)

Status: RESOLVED INVALID

(Thunderbird :: Message Reader UI, defect)

Description

[Jair]

Attachment: Nota Fiscal Eletrônica (NF-e) número 7873 série 1 emitida por Saidata Tecnologia - 'Saidata Tecnologia' ([e-mail]) - 2022-07-27 1723.eml

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0

Steps to reproduce:

I got a mail message from a external system. It has two annexes. One .XML and a .PDF.
But at the Thunderbird UI it doesn't show the "paper clip" icon nor any annexes inside this message - some other messages are okay

Actual results:

Pass 1 - I access my webmail page it shows both the message and the annexes.
Pass 2 - At Thunderbird, the message is there and you right click and save-as-file
I opened it with notepad... looks like the annexes are there - the annexes are there but Tbird can't see.
Pass 3 - Other mail clients show it normally...

Expected results:

To show annexes as it should be.

Comment 1

[Thomas D. (:thomas8)]

Magnus might see more on the testcase of attachment 9287329 [details].

Comment 2

[Magnus Melin [:mkmelin]]

The email has Content-Type: multipart/alternative. It needs to be multipart/mixed for attachments to be possible.

Comment 3

[Wayne Mery (:wsmwk)]

Invalid?

Comment 4

[Magnus Melin [:mkmelin]]

Yes.