1370814 - MAPI: Plaintext is interpreted as HTML

Status: RESOLVED DUPLICATE of bug 1366196

(Thunderbird :: Mail Window Front End, defect)

Description

[Ollo]

User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0
Build ID: 20170518000419

Steps to reproduce:

1st: I sent a plaintext message via MAPI to Thunderbird with the option MAPI_DIALOG.
-> Thunderbird was started and a plaintext mail has been loaded, everything was OK.

2nd: I sent a plaintext message via MAPI to Thunderbird without the option MAPI_DIALOG.
-> Thunderbird was started and a HTML Mail without any HTML Tags mail was sent to the reciepient.


Actual results:

Source code of a mail, sent via MAPI:

This is a multi-part message in MIME format.
--------------FD921A1F9CA03B3E55BCE120
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 8bit

Lieber Kunde,

Deine Bestellung ist auf dem Weg !

Die Paket und Trackingdaten wurden separat per eMail versendet.
Die Lieferung kann zudem in mehr als einem Paket erfolgen, welche zudem 
nicht zeitgleich eintreffen.

Mit fröhlich bunten Grüßen
dein Onkel Horst

--------------FD921A1F9CA03B3E55BCE120


Expected results:

A plaintext message must be interpreted as a plaintext message.

Comment 1

[Jorg K (CEST = GMT+2)]

Known problem, will be fixed in TB 52.2. Sorry about the inconvenience.