Populate messages for more receivers with ExtraData if present

[fayzal-g]

If there is ExtraData present in the ctx, then adds it to the message payload for the following additional receivers:

• email
• mqtt
• opsgenie
• pagerduty
• slack
• webex

---

Note

Low Risk
Small, additive change limited to notification payload composition; risk is mainly unintended template/payload differences if ExtraData is present or mismatched-length.

Overview
ExtraData propagation is expanded and standardized across receivers. email, mqtt, opsgenie, pagerduty, slack, and webex now call a shared receivers.ApplyExtraData(ctx, data.Alerts) helper so any per-alert ExtraData present in the context is available to templates/payloads.

Refactors existing bespoke ExtraData injection in oncall and webhook to use the same helper, introduces a small interface (ExtraDataAlerts) plus templates.ExtendedAlerts methods (Len, SetExtraData) to support it, and adds new TestNotify_ExtraData tests for the newly-supported receivers.

^{Written by Cursor Bugbot for commit 060235e. This will update automatically on new commits. Configure here.}

[fayzal-g]

@cursor push e4c2cec

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[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is ON. A Cloud Agent has been kicked off to fix the reported issue.}

[cursor]

Bugbot Autofix prepared fixes for 1 of the 1 bugs found in the latest run.

• ✅ Fixed: Email subject template lacks access to ExtraData
  • Moved ApplyExtraData call to immediately after TmplText and before any tmpl() calls, ensuring ExtraData is available when the subject template is executed.

Or push these changes by commenting:

@cursor push b4f8d0ceed

Preview (b4f8d0ceed)

diff --git a/receivers/email/v1/email.go b/receivers/email/v1/email.go
--- a/receivers/email/v1/email.go
+++ b/receivers/email/v1/email.go
@@ -41,6 +41,9 @@
 	var tmplErr error
 	tmpl, data := templates.TmplText(ctx, en.tmpl, alerts, l, &tmplErr)
 
+	// Augment extended Alert data with any extra data if provided.
+	receivers.ApplyExtraData(ctx, data.Alerts)
+
 	subject := tmpl(en.settings.Subject)
 	alertPageURL := en.tmpl.ExternalURL.String()
 	ruleURL := en.tmpl.ExternalURL.String()
@@ -85,9 +88,6 @@
 		level.Warn(l).Log("msg", "failed to get all images for email", "err", err)
 	}
 
-	// Augment extended Alert data with any extra data if provided.
-	receivers.ApplyExtraData(ctx, data.Alerts)
-
 	cmd := &receivers.SendEmailSettings{
 		Subject: subject,
 		Data: map[string]interface{}{

[yuri-tceretian]

OpsGenie is deprecated. Let's leave it out of any new features.