Thanks Alan! Setting the `X-Priority` header to `1` and the `Importance`
header to `high` did the trick.
Jonah
On 10 Dec 2025, at 17:06, Alan Dobkin wrote:
Hi Jonah,
It's a bit tricky, but here are the basics:
First, you'll need to add an X-Priority header option to the composer
headers menu. The command to do this is documented here:
https://manual.mailmate-app.com/hidden_preferences#composing
The composer allows you to enable/disable various headers in the
headers menu (far left of the status bar in the composer window). The
list of available headers can be augmented as follows:
defaults write com.freron.MailMate MmAdditionalComposerHeaders "(
{ headerName = 'X-Priority'; defaultValue = '1'; type = 'plain'; } )"
In this example, an X-Priority header is made available. Giving it a
value of 1 is going to make the message a high priority message (at
least according to some email clients). Note that this is a really
low-level feature. Make sure you know what you are doing before
adding non-standard headers to outgoing messages.
After you do this, you can select the X-Priority header when you want
to mark an outgoing message as important. There is no official
standard for how this header is used, but generally the values work
like this:
1: High priority
3: Medium priority
5: Low priority
There is also a separate Importance header which is used in some
cases, as well as a plain Priority header and one named
X-MSMail-Priority. These are all used in various ways by different
mail clients and cloud email services.
Alan
On 12/10/2025 9:48 AM, Jonah Lefkoff wrote:
Hi Mailmate Group,
I have noticed on a few emails incoming from my university outlook
email have an “important” exclamation point in the flag column.
I’d like to know how to set this message status in a new outgoing
email. I wasn’t able to find any mention of this in the manual.
I’ve attached a screenshot example of this flag in Mailmate.
Thanks!
Sincerely,
Jonah
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