Configuration to add custom SMTP headers

[Barbiero]

What would you like to be added:

The ability to add custom SMTP headers to emails sent by Grafana

Why is this needed:

Certain SMTP providers support custom manipulation of emails according to SMTP headers. For example, Postmark allows enabling or disabling link tracking by setting the SMTP header X-PM-TrackLinks: None.

I believe this is an inconsequential addition that would benefit some use cases. An initial implementation could allow us to set this on grafana.ini with a simple additional_headers: [key]=[value].

[wbrowne]

Thanks for creating this issue @Barbiero. Unfortunately in order to add support for this in Grafana, we'd first like to see if there is a high demand for this feature.

In the meantime, perhaps a SMTP proxy could be used to support your particular use-case?

[Barbiero]

That's a good idea, I'll look into it. Thanks!

For me in particular, this isn't high priority. The grafana emails are all internal within our organization so even if there's click tracking we don't really care that much, it just would be nice to have. I figured the possibility of additional headers would be interesting for other users as well.

[wbrowne]

Great! Thanks for the extra context.

Sounds great. We'll leave the issue here for the meantime in order to gauge priority.

Thanks again @Barbiero!

[eacherkan-aternity]

AWS's Simple Email Service also uses SMTP email headers for switching between configuration sets: https://docs.aws.amazon.com/ses/latest/dg/event-publishing-send-email.html#event-publishing-using-ses-headers

[melindam]

This would have been nice to have, found out the external mail services need a header, and since we are in the cloud .. its required

• Configure the Public Cloud server/system to use the following options including the mail header.

mail header: x-ComanyName-Azure: Yes
SMTP host: maild2.corpmailsvcs.com

[trauta]

I am also interested in this feature since our mail servers need additional headers to in order to accept mails from our Grafana installations.

[github-actions]

This issue has been automatically marked as stale because it has not had activity in the last year. It will be closed in 30 days if no further activity occurs. Please feel free to leave a comment if you believe the issue is still relevant. Thank you for your contributions!

[Tonic8]

Hello

i'm really interested

in my case it's mandatory to tag the sensitivity level of the header mail, the sensivity like public/internal/confidential. to allow mail archiving tools to filter/store/block maild depending of the sensitivity level.

REquired because we use Microsoft AIP.