diff --git a/ntfy/events/imagecomplete_ntfy.event.php b/ntfy/events/imagecomplete_ntfy.event.php
index 77ed6be..0797098 100644
--- a/ntfy/events/imagecomplete_ntfy.event.php
+++ b/ntfy/events/imagecomplete_ntfy.event.php
@@ -67,8 +67,33 @@ public function __construct()
      */
     public function onEvent($event, $data)
     {
-        self::$message = 'This host has finished imaging.';
-        self::$shortdesc = 'Imaging Complete';
+        // One listener, two names: HOST_IMAGE_COMPLETE is a deploy finishing
+        // and HOST_IMAGEUP_COMPLETE is a capture. Core never fired the capture
+        // name at all until fogproject#1202, so both outcomes arrived as a
+        // deploy and this message could not tell them apart.
+        //
+        // Composed here rather than left as a bare literal for the parent to
+        // translate, because the image name has to be substituted OUTSIDE _().
+        // The parent's _() then finds no entry and passes the finished string
+        // through, which is what we want. Read defensively: this plugin has to
+        // keep working against a server that has not taken #1202 yet.
+        $image = (string) ($data['ImageName'] ?? '');
+        if ('' === $image) {
+            $image = _('an unnamed image');
+        }
+        if ('HOST_IMAGEUP_COMPLETE' === $event) {
+            self::$shortdesc = _('Capture Complete');
+            self::$message = sprintf(
+                _('This host has finished capturing image %s.'),
+                $image
+            );
+        } else {
+            self::$shortdesc = _('Deploy Complete');
+            self::$message = sprintf(
+                _('This host has finished deploying image %s.'),
+                $image
+            );
+        }
         parent::onEvent($event, $data);
     }
 }
diff --git a/ntfy/events/imagefail_ntfy.event.php b/ntfy/events/imagefail_ntfy.event.php
index 87fd49f..049355e 100644
--- a/ntfy/events/imagefail_ntfy.event.php
+++ b/ntfy/events/imagefail_ntfy.event.php
@@ -63,8 +63,25 @@ public function __construct()
      */
     public function onEvent($event, $data)
     {
-        self::$message = 'This host has failed to image';
-        self::$shortdesc = 'Failed';
+        // HOST_IMAGE_FAIL had no core caller at all until fogproject#1202, so
+        // this listener has never run on any server. The reason is the part an
+        // admin can act on, so say it rather than "failed to image". Read
+        // defensively: this plugin has to keep working against a server that
+        // has not taken #1202 yet.
+        $image = (string) ($data['ImageName'] ?? '');
+        if ('' === $image) {
+            $image = _('an unnamed image');
+        }
+        $reason = (string) ($data['Reason'] ?? '');
+        if ('' === $reason) {
+            $reason = _('no reason was reported');
+        }
+        self::$shortdesc = _('Imaging Failed');
+        self::$message = sprintf(
+            _('This host failed imaging %1$s: %2$s'),
+            $image,
+            $reason
+        );
         parent::onEvent($event, $data);
     }
 }
diff --git a/pushbullet/events/imagecomplete_pushbullet.event.php b/pushbullet/events/imagecomplete_pushbullet.event.php
index 80f18bd..f7de97f 100644
--- a/pushbullet/events/imagecomplete_pushbullet.event.php
+++ b/pushbullet/events/imagecomplete_pushbullet.event.php
@@ -67,8 +67,33 @@ public function __construct()
      */
     public function onEvent($event, $data)
     {
-        self::$message = 'This host has finished imaging.';
-        self::$shortdesc = 'Imaging Complete';
+        // One listener, two names: HOST_IMAGE_COMPLETE is a deploy finishing
+        // and HOST_IMAGEUP_COMPLETE is a capture. Core never fired the capture
+        // name at all until fogproject#1202, so both outcomes arrived as a
+        // deploy and this message could not tell them apart.
+        //
+        // Composed here rather than left as a bare literal for the parent to
+        // translate, because the image name has to be substituted OUTSIDE _().
+        // The parent's _() then finds no entry and passes the finished string
+        // through, which is what we want. Read defensively: this plugin has to
+        // keep working against a server that has not taken #1202 yet.
+        $image = (string) ($data['ImageName'] ?? '');
+        if ('' === $image) {
+            $image = _('an unnamed image');
+        }
+        if ('HOST_IMAGEUP_COMPLETE' === $event) {
+            self::$shortdesc = _('Capture Complete');
+            self::$message = sprintf(
+                _('This host has finished capturing image %s.'),
+                $image
+            );
+        } else {
+            self::$shortdesc = _('Deploy Complete');
+            self::$message = sprintf(
+                _('This host has finished deploying image %s.'),
+                $image
+            );
+        }
         parent::onEvent($event, $data);
     }
 }
diff --git a/pushbullet/events/imagefail_pushbullet.event.php b/pushbullet/events/imagefail_pushbullet.event.php
index 4add6f0..67e17a3 100644
--- a/pushbullet/events/imagefail_pushbullet.event.php
+++ b/pushbullet/events/imagefail_pushbullet.event.php
@@ -63,8 +63,25 @@ public function __construct()
      */
     public function onEvent($event, $data)
     {
-        self::$message = 'This host has failed to image';
-        self::$shortdesc = 'Failed';
+        // HOST_IMAGE_FAIL had no core caller at all until fogproject#1202, so
+        // this listener has never run on any server. The reason is the part an
+        // admin can act on, so say it rather than "failed to image". Read
+        // defensively: this plugin has to keep working against a server that
+        // has not taken #1202 yet.
+        $image = (string) ($data['ImageName'] ?? '');
+        if ('' === $image) {
+            $image = _('an unnamed image');
+        }
+        $reason = (string) ($data['Reason'] ?? '');
+        if ('' === $reason) {
+            $reason = _('no reason was reported');
+        }
+        self::$shortdesc = _('Imaging Failed');
+        self::$message = sprintf(
+            _('This host failed imaging %1$s: %2$s'),
+            $image,
+            $reason
+        );
         parent::onEvent($event, $data);
     }
 }
diff --git a/slack/events/imagecomplete_slack.event.php b/slack/events/imagecomplete_slack.event.php
index 21cf52a..d3bedfe 100644
--- a/slack/events/imagecomplete_slack.event.php
+++ b/slack/events/imagecomplete_slack.event.php
@@ -47,6 +47,15 @@ public function __construct()
     /**
      * Perform action
      *
+     * One listener, two names: HOST_IMAGE_COMPLETE is a deploy finishing and
+     * HOST_IMAGEUP_COMPLETE is a capture. Core never fired the capture name
+     * at all until fogproject#1202, so both outcomes arrived as a deploy and
+     * the message could not tell them apart. The payload now also carries the
+     * image, so the notification can say which one.
+     *
+     * Every added key is read defensively: this plugin has to keep working
+     * against a server that has not taken that change yet.
+     *
      * @param string $event the event to enact
      * @param mixed  $data  the data
      *
@@ -54,15 +63,23 @@ public function __construct()
      */
     public function onEvent($event, $data)
     {
+        $image = (string) ($data['ImageName'] ?? '');
+        if ('' === $image) {
+            $image = _('an unnamed image');
+        }
+        $format = (
+            'HOST_IMAGEUP_COMPLETE' === $event ?
+            _('Host %1$s finished capturing image %2$s.') :
+            _('Host %1$s finished deploying image %2$s.')
+        );
         $Slacks = Route::getList('slack');
         foreach ($Slacks as $Slack) {
             $args = [
                 'channel' => $Slack->name,
                 'text' => sprintf(
-                    '%s: %s %s.',
-                    _('Host'),
+                    $format,
                     $data['HostName'],
-                    _('completed imaging')
+                    $image
                 )
             ];
             self::getClass('Slack', $Slack->id)->call('chat.postMessage', $args);
diff --git a/slack/events/imagefail_slack.event.php b/slack/events/imagefail_slack.event.php
index 7eaeb4f..0d57a41 100644
--- a/slack/events/imagefail_slack.event.php
+++ b/slack/events/imagefail_slack.event.php
@@ -44,6 +44,13 @@ public function __construct()
     /**
      * Perform action
      *
+     * HOST_IMAGE_FAIL had no core caller at all until fogproject#1202, so this
+     * listener has never run on any server. The payload carries the image and
+     * the reason FOG rejected the task, which is the part an admin can act on.
+     *
+     * Every added key is read defensively: this plugin has to keep working
+     * against a server that has not taken that change yet.
+     *
      * @param string $event the event to enact
      * @param mixed  $data  the data
      *
@@ -51,15 +58,23 @@ public function __construct()
      */
     public function onEvent($event, $data)
     {
+        $image = (string) ($data['ImageName'] ?? '');
+        if ('' === $image) {
+            $image = _('an unnamed image');
+        }
+        $reason = (string) ($data['Reason'] ?? '');
+        if ('' === $reason) {
+            $reason = _('no reason was reported');
+        }
         $Slacks = Route::getList('slack');
         foreach ($Slacks as $Slack) {
             $args = [
                 'channel' => $Slack->name,
                 'text' => sprintf(
-                    '%s: %s %s.',
-                    _('Host'),
+                    _('Host %1$s failed imaging %2$s: %3$s'),
                     $data['HostName'],
-                    _('imaging failed')
+                    $image,
+                    $reason
                 )
             ];
             self::getClass('Slack', $Slack->id)->call('chat.postMessage', $args);
diff --git a/tests/imaging-notification-detail.test.php b/tests/imaging-notification-detail.test.php
new file mode 100644
index 0000000..94d02d4
--- /dev/null
+++ b/tests/imaging-notification-detail.test.php
@@ -0,0 +1,148 @@
+<?php
+/**
+ * The imaging notifications must survive a server that has not been updated.
+ *
+ * fogproject#1202 gave the imaging events a real payload -- ImageName, Reason,
+ * and a distinct HOST_IMAGEUP_COMPLETE for a capture -- and these six
+ * listeners now use it. A plugin release is not tied to a FOG release, so
+ * every one of them has to keep working against a server whose core still
+ * sends nothing but HostName. Read a missing key directly and the notification
+ * becomes a PHP warning in the middle of an event that only fires when
+ * something has already gone wrong.
+ *
+ * Also pinned here because this repository has no gettext gate of its own
+ * (fogproject's tests/gettext-literal-msgid.test.php only scans fogproject):
+ * a msgid must not mix literal text with a variable. `_("Image $name")`
+ * extracts nothing and never translates, silently and permanently.
+ *
+ * Source-level. These classes extend the plugin's own Event base, which
+ * extends FOG's, so none of them can be loaded without a booted FOG, a
+ * session and a database -- the same reason group-tab-permissions.test.php
+ * inspects rather than instantiates.
+ *
+ * Usage: php tests/imaging-notification-detail.test.php
+ * Exit status 0 = pass, 1 = fail.
+ */
+
+$root = dirname(__DIR__);
+
+$complete = [];
+$fail = [];
+foreach (['slack', 'ntfy', 'pushbullet'] as $plugin) {
+    $complete[$plugin] = sprintf(
+        '%s/%s/events/imagecomplete_%s.event.php',
+        $root,
+        $plugin,
+        $plugin
+    );
+    $fail[$plugin] = sprintf(
+        '%s/%s/events/imagefail_%s.event.php',
+        $root,
+        $plugin,
+        $plugin
+    );
+}
+
+$failures = [];
+$checks = 0;
+
+/**
+ * Records one assertion.
+ *
+ * @param bool   $ok  Whether it held.
+ * @param string $msg What is wrong if it did not.
+ *
+ * @return void
+ */
+$check = function ($ok, $msg) use (&$failures, &$checks) {
+    ++$checks;
+    if (!$ok) {
+        $failures[] = $msg;
+    }
+};
+
+foreach (array_merge(array_values($complete), array_values($fail)) as $file) {
+    $src = file_get_contents($file);
+    $where = basename($file);
+
+    // The compatibility contract with an un-upgraded server.
+    $check(
+        false !== strpos($src, "\$data['ImageName'] ?? ''"),
+        "$where reads ImageName without a default, so it warns against a"
+        . ' server that has not taken fogproject#1202'
+    );
+
+    // HostName is the one key that has always been there. Losing it would
+    // break the notification on every server, not just an old one.
+    $check(
+        false !== strpos($src, "\$data['HostName']")
+        || false !== strpos($src, 'parent::onEvent'),
+        "$where no longer uses HostName, the only key core has always sent"
+    );
+
+    // The gettext rule: literal inside _(), variable substituted outside.
+    //
+    // Only a DOUBLE-quoted literal can interpolate, and only that is a defect
+    // -- a `$` inside a single-quoted msgid is a positional format specifier
+    // like %1$s, which is exactly the shape a translator needs to reorder the
+    // sentence.
+    $check(
+        !preg_match('#_\(\s*"[^"]*\$#', $src),
+        "$where interpolates a variable inside a double-quoted _(), which"
+        . ' extracts no msgid and so never translates'
+    );
+    $check(
+        !preg_match('#_\(\s*[\'"][^\'"]*[\'"]\s*\.#', $src),
+        "$where concatenates onto a literal inside _(), same defect as"
+        . ' interpolating into one'
+    );
+    $check(
+        !preg_match('#_\(\s*sprintf#', $src),
+        "$where wraps _() around sprintf() rather than the other way round,"
+        . ' so xgettext extracts the format string only by accident'
+    );
+}
+
+foreach ($complete as $plugin => $file) {
+    $src = file_get_contents($file);
+    $where = basename($file);
+
+    // The whole point of #1202's core half: one listener, two names.
+    $check(
+        false !== strpos($src, "'HOST_IMAGEUP_COMPLETE' === \$event"),
+        "$where does not distinguish a capture from a deploy, so the name"
+        . ' core went to the trouble of firing is wasted'
+    );
+    $check(
+        false !== strpos($src, "'HOST_IMAGEUP_COMPLETE'")
+        && false !== strpos($src, "'HOST_IMAGE_COMPLETE'"),
+        "$where no longer registers both completion names"
+    );
+}
+
+foreach ($fail as $plugin => $file) {
+    $src = file_get_contents($file);
+    $where = basename($file);
+
+    // The reason is the only part of a failure an admin can act on.
+    $check(
+        false !== strpos($src, "\$data['Reason'] ?? ''"),
+        "$where does not report why imaging failed, or reads Reason without a"
+        . ' default'
+    );
+    $check(
+        false !== strpos($src, "'HOST_IMAGE_FAIL'"),
+        "$where no longer registers HOST_IMAGE_FAIL"
+    );
+}
+
+if (count($failures) > 0) {
+    fwrite(STDERR, 'FAIL: ' . count($failures) . " problem(s):\n");
+    foreach ($failures as $f) {
+        fwrite(STDERR, "  - $f\n");
+    }
+    exit(1);
+}
+
+printf("ok: %d checks across 6 imaging notification listeners\n", $checks);
+exit(0);