[MlMt] double sent mail outlook.com

[Benny Kjær Nielsen]

On 5 Feb 2018, at 7:48, Angelo Machils wrote:

Sorry about the late response.

> No, it's on the server that I see the second copy of the sent email. A 
> little later it also shows up in MailMate.

Ok, that does sound like Outlook is saving emails sent with SMTP.

> I can't find any setting in outlook.com to that effect, and even if 
> there were such a setting, it would be not of a lot of use. Because 
> when I have to use the webmail, the sent mail would not be saved.

No, the setting I'm looking for is something like: “Don't save copies 
in IMAP account when email clients use SMTP.” Most often, SMTP and 
IMAP are completely separate things and this wouldn't be an issue at 
all. It is the client's responsibility to save sent messages. Some email 
servers are now “smarter”, but it's badly standardized and not quite 
clear how an email client should behave. Since Gmail does this then one 
could argue that it's now the norm, but I don't consider Gmail standard 
in any way ;-)

(What webmail does is irrelevant since webmail is its own client and it 
should naturally always save sent messages.)

Technically, I believe the underlying bandwidth optimization problem is 
better solved by [this RFC](https://tools.ietf.org/html/rfc4468), but 
MailMate doesn't support this extension and I'm actually not sure if or 
how many SMTP servers support it.

> Isn't there a settings in MailMate where I can turn off saving sent 
> mails per account?

No, and it's partly because I'm unsure how to implement it without 
risking losing sent messages. I would prefer a solution which ensures 
that MailMate doesn't delete it until it has found and downloaded the 
copy saved by the server. This includes verifying that it's an identical 
copy, for example, Gmail some times rewrites headers and I'll be blamed 
for that if MailMate doesn't somehow record what it really sent.

In other words, I would prefer a feature like “Detect and delete 
duplicates” (for Sent Messages) rather than “Don't save sent 
messages”, but in practice the first is just a safer variant of the 
latter.

But the answer is still: No, MailMate does not currently have the 
feature you are looking for.

-- 
Benny
https://freron.com/become_a_mailmate_patron/

> On Sun, Feb 4, 2018 at 10:40 AM, Benny Kjær Nielsen 
> <mailinglist at freron.com>
> wrote:
>
>> On 4 Feb 2018, at 9:43, Angelo Machils wrote:
>>
>> When I sent an email through my Hotmail account, it turns out that on 
>> the
>>> server for every sent mail, there is a second copy. MailMate 
>>> doesn’t show
>>> this second copy in the Sent folder, but I just found out that on 
>>> the
>>> web-app for outlook.com, every sent mail has a second copy.
>>>
>>> Can I change this behaviour somewhere?
>>>
>>
>> If it's because the server saves a copy in the mailbox for sent 
>> messages
>> then there might be a server setting to prevent this.
>>
>> Since you cannot see both copies in webmail then I also suspect that 
>> there
>> is a synchronization issue. Check that the mailbox for sent messages 
>> is
>> online when you look at it under SOURCES in the mailbox list. (It's 
>> not
>> online if it's greyed out.)
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