diff --git a/docs/eventmanager.md b/docs/eventmanager.md
index 4df55a6f..e671fb7e 100644
--- a/docs/eventmanager.md
+++ b/docs/eventmanager.md
@@ -36,6 +36,7 @@ The following placeholders are supported:
 - `{{FsPath}}`. Full filesystem path, for example `/user/homedir/adir/afile.txt` or `C:/data/user/homedir/adir/afile.txt` on Windows.
 - `{{ObjectName}}`. File/directory name, for example `afile.txt` or provider object name.
 - `{{ObjectType}}`. Object type for provider events: `user`, `group`, `admin`, etc.
+- `{{Ext}}`. File extension, for example `.txt` if the filename is `afile.txt`.
 - `{{VirtualTargetPath}}`. Virtual target path for renames.
 - `{{VirtualTargetDirPath}}`. Parent directory for VirtualTargetPath.
 - `{{TargetName}}`. Target object name for renames.
@@ -53,6 +54,7 @@ The following placeholders are supported:
 - `{{IDPField<fieldname>}}`. Identity Provider custom fields containing a string.
 - `{{Metadata}}`. Cloud storage metadata for the downloaded file serialized as JSON.
 - `{{MetadataString}}`. Cloud storage metadata for the downloaded file as JSON escaped string.
+- `{{UID}}`. Unique ID.
 
 Event rules are based on the premise that an event occours. To each rule you can associate one or more actions.
 The following trigger events are supported:
diff --git a/go.mod b/go.mod
index e1a2dcd9..e7b5fc53 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.21
 require (
 	cloud.google.com/go/storage v1.36.0
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.9.1
-	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.2.0
+	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.2.1
 	github.com/GehirnInc/crypt v0.0.0-20230320061759-8cc1b52080c5
 	github.com/alexedwards/argon2id v1.0.0
 	github.com/amoghe/go-crypt v0.0.0-20220222110647-20eada5f5964
@@ -41,7 +41,7 @@ require (
 	github.com/klauspost/compress v1.17.4
 	github.com/lestrrat-go/jwx/v2 v2.0.18
 	github.com/lithammer/shortuuid/v3 v3.0.7
-	github.com/mattn/go-sqlite3 v1.14.18
+	github.com/mattn/go-sqlite3 v1.14.19
 	github.com/mhale/smtpd v0.8.1
 	github.com/minio/sio v0.3.1
 	github.com/otiai10/copy v1.14.0
@@ -165,7 +165,7 @@ require (
 	go.opentelemetry.io/otel/metric v1.21.0 // indirect
 	go.opentelemetry.io/otel/trace v1.21.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/exp v0.0.0-20231206192017-f3f8817b8deb // indirect
+	golang.org/x/exp v0.0.0-20231214170342-aacd6d4b4611 // indirect
 	golang.org/x/mod v0.14.0 // indirect
 	golang.org/x/sync v0.5.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
diff --git a/go.sum b/go.sum
index f5ec7f15..2cd9811c 100644
--- a/go.sum
+++ b/go.sum
@@ -18,10 +18,10 @@ github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.4.0 h1:BMAjVKJM0U/CYF27gA0ZM
 github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.4.0/go.mod h1:1fXstnBMas5kzG+S3q8UoJcmyU6nUeunJcMDHcRYHhs=
 github.com/Azure/azure-sdk-for-go/sdk/internal v1.5.1 h1:6oNBlSdi1QqM1PNW7FPA6xOGA5UNsXnkaYZz9vdPGhA=
 github.com/Azure/azure-sdk-for-go/sdk/internal v1.5.1/go.mod h1:s4kgfzA0covAXNicZHDMN58jExvcng2mC/DepXiF1EI=
-github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.2.0 h1:Ma67P/GGprNwsslzEH6+Kb8nybI8jpDTm4Wmzu2ReK8=
-github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.2.0/go.mod h1:c+Lifp3EDEamAkPVzMooRNOK6CZjNSdEnf1A7jsI9u4=
-github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.2.0 h1:gggzg0SUMs6SQbEw+3LoSsYf9YMjkupeAnHMX8O9mmY=
-github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.2.0/go.mod h1:+6KLcKIVgxoBDMqMO/Nvy7bZ9a0nbU3I1DtFQK3YvB4=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.5.0 h1:AifHbc4mg0x9zW52WOpKbsHaDKuRhlI7TVl47thgQ70=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.5.0/go.mod h1:T5RfihdXtBDxt1Ch2wobif3TvzTdumDy29kahv6AV9A=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.2.1 h1:AMf7YbZOZIW5b66cXNHMWWT/zkjhz5+a+k/3x40EO7E=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.2.1/go.mod h1:uwfk06ZBcvL/g4VHNjurPfVln9NMbsk2XIZxJ+hu81k=
 github.com/AzureAD/microsoft-authentication-library-for-go v1.2.0 h1:hVeq+yCyUi+MsoO/CU95yqCIcdzra5ovzk8Q2BBpV2M=
 github.com/AzureAD/microsoft-authentication-library-for-go v1.2.0/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
@@ -288,8 +288,8 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
 github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/mattn/go-sqlite3 v1.14.18 h1:JL0eqdCOq6DJVNPSvArO/bIV9/P7fbGrV00LZHc+5aI=
-github.com/mattn/go-sqlite3 v1.14.18/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
+github.com/mattn/go-sqlite3 v1.14.19 h1:fhGleo2h1p8tVChob4I9HpmVFIAkKGpiukdrgQbWfGI=
+github.com/mattn/go-sqlite3 v1.14.19/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
 github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0 h1:jWpvCLoY8Z/e3VKvlsiIGKtc+UG6U5vzxaoagmhXfyg=
 github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0/go.mod h1:QUyp042oQthUoa9bqDv0ER0wrtXnBruoNd7aNjkbP+k=
 github.com/mhale/smtpd v0.8.1 h1:O02u8O3eYAGxZCGf4E98WjyB+rA3DVFZtchEialjX4s=
@@ -432,8 +432,8 @@ go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN8
 gocloud.dev v0.35.0 h1:x/Gtt5OJdT4j+ir1AXAIXb7bBnFawXAAaJptCUGk3HU=
 gocloud.dev v0.35.0/go.mod h1:wbyF+BhfdtLWyUtVEWRW13hFLb1vXnV2ovEhYGQe3ck=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20231206192017-f3f8817b8deb h1:c0vyKkb6yr3KR7jEfJaOSv4lG7xPkbN6r52aJz1d8a8=
-golang.org/x/exp v0.0.0-20231206192017-f3f8817b8deb/go.mod h1:iRJReGqOEeBhDZGkGbynYwcHlctCvnjTYIamk7uXpHI=
+golang.org/x/exp v0.0.0-20231214170342-aacd6d4b4611 h1:qCEDpW1G+vcj3Y7Fy52pEM1AWm3abj8WimGYejI3SC4=
+golang.org/x/exp v0.0.0-20231214170342-aacd6d4b4611/go.mod h1:iRJReGqOEeBhDZGkGbynYwcHlctCvnjTYIamk7uXpHI=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
diff --git a/internal/common/actions.go b/internal/common/actions.go
index 2d99b264..cfc77530 100644
--- a/internal/common/actions.go
+++ b/internal/common/actions.go
@@ -107,6 +107,7 @@ func ExecutePreAction(conn *BaseConnection, operation, filePath, virtualPath str
 			VirtualTargetPath: event.VirtualTargetPath,
 			FsTargetPath:      event.TargetPath,
 			ObjectName:        path.Base(event.VirtualPath),
+			Extension:         path.Ext(event.VirtualPath),
 			FileSize:          event.FileSize,
 			Protocol:          event.Protocol,
 			IP:                event.IP,
@@ -152,6 +153,7 @@ func ExecuteActionNotification(conn *BaseConnection, operation, filePath, virtua
 			VirtualTargetPath: notification.VirtualTargetPath,
 			FsTargetPath:      notification.TargetPath,
 			ObjectName:        path.Base(notification.VirtualPath),
+			Extension:         path.Ext(notification.VirtualPath),
 			FileSize:          notification.FileSize,
 			Elapsed:           notification.Elapsed,
 			Protocol:          notification.Protocol,
diff --git a/internal/common/eventmanager.go b/internal/common/eventmanager.go
index 30951502..38c7d5f2 100644
--- a/internal/common/eventmanager.go
+++ b/internal/common/eventmanager.go
@@ -398,6 +398,7 @@ func (r *eventRulesContainer) handleFsEvent(params EventParams) (bool, error) {
 	r.RUnlock()
 
 	params.sender = params.Name
+	params.addUID()
 	if len(rulesAsync) > 0 {
 		go executeAsyncRulesActions(rulesAsync, params)
 	}
@@ -451,6 +452,7 @@ func (r *eventRulesContainer) handleIDPLoginEvent(params EventParams, customFiel
 		return nil, nil, fmt.Errorf("more than one account check action rules matches: %q", strings.Join(ruleNames, ","))
 	}
 
+	params.addUID()
 	if len(rulesAsync) > 0 {
 		go executeAsyncRulesActions(rulesAsync, params)
 	}
@@ -545,6 +547,7 @@ type EventParams struct {
 	VirtualTargetPath     string
 	FsTargetPath          string
 	ObjectName            string
+	Extension             string
 	ObjectType            string
 	FileSize              int64
 	Elapsed               int64
@@ -553,6 +556,7 @@ type EventParams struct {
 	Role                  string
 	Email                 string
 	Timestamp             int64
+	UID                   string
 	IDPCustomFields       *map[string]string
 	Object                plugin.Renderer
 	Metadata              map[string]string
@@ -621,6 +625,12 @@ func (p *EventParams) AddError(err error) {
 	p.errors = append(p.errors, err.Error())
 }
 
+func (p *EventParams) addUID() {
+	if p.UID == "" {
+		p.UID = util.GenerateUniqueID()
+	}
+}
+
 func (p *EventParams) setBackupParams(backupPath string) {
 	if p.sender != "" {
 		return
@@ -781,6 +791,8 @@ func (p *EventParams) getStringReplacements(addObjectData, jsonEscaped bool) []s
 		"{{Email}}", p.getStringReplacement(p.Email, jsonEscaped),
 		"{{Timestamp}}", fmt.Sprintf("%d", p.Timestamp),
 		"{{StatusString}}", p.getStatusString(),
+		"{{UID}}", p.getStringReplacement(p.UID, jsonEscaped),
+		"{{Ext}}", p.getStringReplacement(p.Extension, jsonEscaped),
 	}
 	if p.VirtualPath != "" {
 		replacements = append(replacements, "{{VirtualDirPath}}", p.getStringReplacement(path.Dir(p.VirtualPath), jsonEscaped))
@@ -2615,6 +2627,7 @@ func executeAsyncRulesActions(rules []dataprovider.EventRule, params EventParams
 	eventManager.addAsyncTask()
 	defer eventManager.removeAsyncTask()
 
+	params.addUID()
 	for _, rule := range rules {
 		executeRuleAsyncActions(rule, params.getACopy(), nil)
 	}
diff --git a/internal/common/eventmanager_test.go b/internal/common/eventmanager_test.go
index 248b1051..3dabea11 100644
--- a/internal/common/eventmanager_test.go
+++ b/internal/common/eventmanager_test.go
@@ -2004,6 +2004,7 @@ func TestEventParamsCopy(t *testing.T) {
 	params := EventParams{
 		Name:            "name",
 		Event:           "event",
+		Extension:       "ext",
 		Status:          1,
 		errors:          []string{"error1"},
 		retentionChecks: []executedRetentionCheck{},
diff --git a/templates/webadmin/eventaction.html b/templates/webadmin/eventaction.html
index 5704d1bf..33397ccc 100644
--- a/templates/webadmin/eventaction.html
+++ b/templates/webadmin/eventaction.html
@@ -792,6 +792,9 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
                 <p>
                     <span class="shortcut"><b>{{`{{FsPath}}`}}</b></span> => Full filesystem path, for example "/user/homedir/adir/afile.txt" or "C:/data/user/homedir/adir/afile.txt" on Windows.
                 </p>
+                <p>
+                    <span class="shortcut"><b>{{`{{Ext}}`}}</b></span> => File extension, for example ".txt" if the filename is "afile.txt".
+                </p>
                 <p>
                     <span class="shortcut"><b>{{`{{ObjectName}}`}}</b></span> => File/directory name, for example "afile.txt" or provider object name.
                 </p>
@@ -849,6 +852,9 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
                 <p>
                     <span class="shortcut"><b>{{`{{MetadataString}}`}}</b></span> => Cloud storage metadata for the downloaded file as JSON escaped string.
                 </p>
+                <p>
+                    <span class="shortcut"><b>{{`{{UID}}`}}</b></span> => Unique ID.
+                </p>
             </div>
             <div class="modal-footer">
                 <button class="btn btn-primary" type="button" data-dismiss="modal">OK</button>