1730738 - BCC header missing in "Sent" message, when message is sent using outbox

Status: RESOLVED FIXED

(Thunderbird :: Mail Window Front End, defect)

Description

[Jonathan P-H]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:92.0) Gecko/20100101 Firefox/92.0

Steps to reproduce:

Compose a message with BCC recipients, and send it using the outbox mechanism (Ci.nsIMsgCompDeliverMode.Later)

Actual results:

The message is deposited into the outbox with all headers intact, and File > Send Unsent Messages delivers it to all the correct recipients. However, the copy that ends up in the "Sent" folder has the BCC addresses stripped. According to this user, the behavior changed between version 78 and 91.

Expected results:

The message copy deposited in "Sent" is intended to be a record of what the user has done in the past, and it is important for the original headers to remain intact. It is especially important for verifying to whom the message was delivered.

Comment 1

[Ping Chen [:rnons] (away)]

I guess it's regressed by bug 1686636, the bcc line in the message file got removed by SendLater.cpp. Will take a look.

Comment 2

[Ping Chen [:rnons] (away)]

Attachment: Bug 1730738 - Fix bcc header in fcc when sending from Outbox. r=mkmelin

nsMsgSendLater.cpp removes bcc header, needs to add it back in MessageSend.jsm.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/dee54b61b220
Fix bcc header in fcc when sending from Outbox. r=mkmelin

Comment 4

[Uplift Request]

This is a dataloss bug which should be uplifted asap.

Comment 5

[Ping Chen [:rnons] (away)]

Comment on attachment 9241278 [details]
Bug 1730738 - Fix bcc header in fcc when sending from Outbox. r=mkmelin

[Approval Request Comment]
Regression caused by (bug #): bug 1686636
User impact if declined: After sending a bcc mail from Outbox, the bcc header is missing in the Sent folder
Testing completed (on c-c, etc.): c-c
Risk to taking this patch (and alternatives if risky): low

Comment 6

[Wayne Mery (:wsmwk)]

Comment on attachment 9241278 [details]
Bug 1730738 - Fix bcc header in fcc when sending from Outbox. r=mkmelin

[Triage Comment]
Approved for beta

Comment 7

[Rob Lemley [:rjl]]

Thunderbird 93.0b4:
https://hg.mozilla.org/releases/comm-beta/rev/bec8d1a263b5

Comment 8

[Wayne Mery (:wsmwk)]

Comment on attachment 9241278 [details]
Bug 1730738 - Fix bcc header in fcc when sending from Outbox. r=mkmelin

[Triage Comment]
Approved for esr91

Comment 9

[Rob Lemley [:rjl]]

Thunderbird 91.1.2:
https://hg.mozilla.org/releases/comm-esr91/rev/1077628a2090