diff --git a/ARCHITECTURE.md b/ARCHITECTURE.md
index 6c35dc2..c89c65b 100644
--- a/ARCHITECTURE.md
+++ b/ARCHITECTURE.md
@@ -204,7 +204,7 @@ Update notification status
 
 ### Hierarchy (highest to lowest priority)
 1. Environment variables (prefixed with `NOTIFIER_`)
-2. Configuration file (config.yaml)
+2. Configuration file (notifier.config)
 3. Default values
 
 ### Example Environment Variables
@@ -296,7 +296,7 @@ NOTIFIER_NOTIFIERS_SLACK_WEBHOOK_URL=https://hooks.slack.com/...
 3. Add configuration struct to `internal/config/`
 4. Register in factory during initialization
 5. Update protobuf and REST API types
-6. Add configuration example to `config.yaml`
+6. Add configuration example to `notifier.config`
 
 ### Adding a New Queue Implementation
 
diff --git a/Dockerfile b/Dockerfile
index 3094cd5..d2c2252 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,7 +36,7 @@ WORKDIR /app
 COPY --from=builder /build/server /app/
 
 # Copy default config (can be overridden with volume mount)
-COPY config.yaml /app/config.yaml
+COPY notifier.config /app/notifier.config
 
 # Create directory for queue persistence
 RUN mkdir -p /var/lib/notifier && \
diff --git a/Makefile b/Makefile
index 2587970..51452ea 100644
--- a/Makefile
+++ b/Makefile
@@ -118,7 +118,7 @@ docker-build:
 # Run Docker container
 docker-run:
 	@echo "Running Docker container..."
-	docker run -p 8080:8080 -p 50051:50051 -v $(PWD)/config.yaml:/app/config.yaml notifier:latest
+	docker run -p 8080:8080 -p 50051:50051 -v $(PWD)/notifier.config:/app/notifier.config notifier:latest
 
 # Clean build artifacts
 clean:
diff --git a/QUICKSTART.md b/QUICKSTART.md
index bde2bc3..d7fd56b 100644
--- a/QUICKSTART.md
+++ b/QUICKSTART.md
@@ -149,20 +149,30 @@ curl http://localhost:8080/api/v1/notifications/{notification-id}
 ## Testing with Other Notifiers
 
 ### SMTP (Email)
-Update `config.yaml`:
+Update `notifier.config` with named accounts:
 ```yaml
 notifiers:
   smtp:
-    host: "smtp.gmail.com"
-    port: 587
-    username: "your-email@gmail.com"
-    password: "your-app-password"
-    from: "notifications@yourservice.com"
-    use_tls: true
+    personal:
+      host: "smtp.gmail.com"
+      port: 587
+      username: "your-email@gmail.com"
+      password: "your-app-password"
+      from: "your-email@gmail.com"
+      use_tls: true
+      default: true
+    work:
+      host: "smtp.company.com"
+      port: 587
+      username: "you@company.com"
+      password: "your-work-password"
+      from: "notifications@company.com"
+      use_tls: true
 ```
 
 Then send:
 ```bash
+# Uses default account (personal)
 curl -X POST http://localhost:8080/api/v1/notifications \
   -H "Content-Type: application/json" \
   -d '{
@@ -171,20 +181,38 @@ curl -X POST http://localhost:8080/api/v1/notifications \
     "body": "This is a test email!",
     "recipients": ["recipient@example.com"]
   }'
+
+# Specify account explicitly
+curl -X POST http://localhost:8080/api/v1/notifications \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "email",
+    "account": "work",
+    "subject": "Test Email",
+    "body": "This is a test email!",
+    "recipients": ["recipient@example.com"]
+  }'
 ```
 
 ### Slack
-Update `config.yaml`:
+Update `notifier.config` with named workspaces:
 ```yaml
 notifiers:
   slack:
-    webhook_url: "https://hooks.slack.com/services/YOUR/WEBHOOK/URL"
-    username: "Notifier Bot"
-    icon_emoji: ":bell:"
+    main:
+      webhook_url: "https://hooks.slack.com/services/YOUR/WEBHOOK/URL"
+      username: "Notifier Bot"
+      icon_emoji: ":bell:"
+      default: true
+    team-a:
+      webhook_url: "https://hooks.slack.com/services/TEAM-A/WEBHOOK/URL"
+      username: "Team A Bot"
+      icon_emoji: ":rocket:"
 ```
 
 Then send:
 ```bash
+# Uses default workspace (main)
 curl -X POST http://localhost:8080/api/v1/notifications \
   -H "Content-Type: application/json" \
   -d '{
@@ -193,18 +221,36 @@ curl -X POST http://localhost:8080/api/v1/notifications \
     "body": "Application deployed successfully to production!",
     "recipients": ["#alerts"]
   }'
+
+# Specify workspace explicitly
+curl -X POST http://localhost:8080/api/v1/notifications \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "slack",
+    "account": "team-a",
+    "subject": "Deployment Alert",
+    "body": "Application deployed successfully!",
+    "recipients": ["#alerts"]
+  }'
 ```
 
 ### Ntfy
-Update `config.yaml`:
+Update `notifier.config` with named servers:
 ```yaml
 notifiers:
   ntfy:
-    server_url: "https://ntfy.sh"
+    public:
+      server_url: "https://ntfy.sh"
+      default: true
+    private:
+      server_url: "https://ntfy.mycompany.com"
+      username: "your-username"
+      password: "your-password"
 ```
 
 Then send:
 ```bash
+# Uses default server (public)
 curl -X POST http://localhost:8080/api/v1/notifications \
   -H "Content-Type: application/json" \
   -d '{
@@ -216,6 +262,17 @@ curl -X POST http://localhost:8080/api/v1/notifications \
       "tags": ["warning", "skull"]
     }
   }'
+
+# Specify server explicitly
+curl -X POST http://localhost:8080/api/v1/notifications \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "ntfy",
+    "account": "private",
+    "subject": "Mobile Alert",
+    "body": "This will appear on your phone!",
+    "recipients": ["mytopic"]
+  }'
 ```
 
 ## Configuration
@@ -230,8 +287,8 @@ export NOTIFIER_NOTIFIERS_SMTP_PASSWORD=secret
 ./bin/restserver
 ```
 
-### Using config.yaml
-Create or modify `config.yaml` in the project root:
+### Using notifier.config
+Create or modify `notifier.config` in the project root:
 ```yaml
 server:
   rest_port: 8080
@@ -255,7 +312,7 @@ docker build -t notifier:latest .
 ### Run with Docker
 ```bash
 docker run -p 8080:8080 \
-  -v $(pwd)/config.yaml:/app/config.yaml \
+  -v $(pwd)/notifier.config:/app/notifier.config \
   notifier:latest
 ```
 
@@ -296,18 +353,18 @@ kubectl port-forward svc/notifier-rest 8080:8080
 
 ### Server won't start
 - Check if port 8080 is already in use: `lsof -i :8080`
-- Check config.yaml syntax
+- Check notifier.config syntax
 - Verify all dependencies are installed: `go mod tidy`
 
 ### Notifications not sending
 - Check server logs for errors
-- Verify the notifier is enabled in config.yaml
+- Verify the notifier is enabled in notifier.config
 - For SMTP: Verify credentials and allow less secure apps
 - For Slack: Verify webhook URL is correct
 - For Ntfy: Ensure topic name is valid
 
 ### Queue filling up
-- Increase worker count in config.yaml
+- Increase worker count in notifier.config
 - Check if notifiers are failing
 - Review retry configuration
 
diff --git a/README.md b/README.md
index d641c6b..9a144e8 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,7 @@ curl http://localhost:8080/api/v1/stats
 
 ### Basic Setup
 
-Create `config.yaml` in the project root:
+Create `notifier.config` in the project root:
 
 ```yaml
 server:
@@ -111,19 +111,34 @@ notifiers:
 
 ### Email Notifications (SMTP)
 
+Supports multiple email accounts with named instances:
+
 ```yaml
 notifiers:
   smtp:
-    host: "smtp.gmail.com"
-    port: 587
-    username: "your-email@gmail.com"
-    password: "your-app-password"
-    from: "notifications@yourservice.com"
-    use_tls: true
+    # Personal account (default)
+    personal:
+      host: "smtp.gmail.com"
+      port: 587
+      username: "your-email@gmail.com"
+      password: "your-app-password"
+      from: "personal@gmail.com"
+      use_tls: true
+      default: true
+
+    # Work account
+    work:
+      host: "smtp.company.com"
+      port: 587
+      username: "you@company.com"
+      password: "your-work-password"
+      from: "notifications@company.com"
+      use_tls: true
 ```
 
 **Usage:**
 ```bash
+# Uses default account (personal)
 curl -X POST http://localhost:8080/api/v1/notifications \
   -H "Content-Type: application/json" \
   -d '{
@@ -132,20 +147,47 @@ curl -X POST http://localhost:8080/api/v1/notifications \
     "body": "Thanks for signing up",
     "recipients": ["user@example.com"]
   }'
+
+# Specify account explicitly
+curl -X POST http://localhost:8080/api/v1/notifications \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "email",
+    "account": "work",
+    "subject": "Welcome!",
+    "body": "Thanks for signing up",
+    "recipients": ["user@example.com"]
+  }'
 ```
 
 ### Slack Notifications
 
+Supports multiple workspaces with named instances:
+
 ```yaml
 notifiers:
   slack:
-    webhook_url: "https://hooks.slack.com/services/YOUR/WEBHOOK/URL"
-    username: "Notifier Bot"
-    icon_emoji: ":bell:"
+    # Main workspace (default)
+    main:
+      webhook_url: "https://hooks.slack.com/services/YOUR/WEBHOOK/URL"
+      username: "Notifier Bot"
+      icon_emoji: ":bell:"
+      default: true
+
+    # Team workspace
+    team-a:
+      webhook_url: "https://hooks.slack.com/services/TEAM-A/WEBHOOK/URL"
+      username: "Team A Bot"
+      icon_emoji: ":rocket:"
+      # Channel-specific webhooks
+      webhooks:
+        "#alerts": "https://hooks.slack.com/services/ALERTS/WEBHOOK"
+        "#monitoring": "https://hooks.slack.com/services/MONITORING/WEBHOOK"
 ```
 
 **Usage:**
 ```bash
+# Uses default workspace (main)
 curl -X POST http://localhost:8080/api/v1/notifications \
   -H "Content-Type: application/json" \
   -d '{
@@ -154,20 +196,45 @@ curl -X POST http://localhost:8080/api/v1/notifications \
     "body": "v2.0 deployed to production",
     "recipients": ["#alerts"]
   }'
+
+# Specify workspace explicitly
+curl -X POST http://localhost:8080/api/v1/notifications \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "slack",
+    "account": "team-a",
+    "subject": "Deployment Complete",
+    "body": "v2.0 deployed to production",
+    "recipients": ["#alerts"]
+  }'
 ```
 
 ### Ntfy Push Notifications
 
+Supports multiple ntfy servers with named instances:
+
 ```yaml
 notifiers:
   ntfy:
-    server_url: "https://ntfy.sh"
-    token: "tk_your_access_token"    # Optional, for private topics
-    default_topic: "myapp-alerts"
+    # Public ntfy.sh server (default)
+    public:
+      server_url: "https://ntfy.sh"
+      token: "tk_your_access_token"    # Optional, for private topics
+      default_topic: "myapp-alerts"
+      default: true
+
+    # Private self-hosted server
+    private:
+      server_url: "https://ntfy.mycompany.com"
+      username: "your-username"
+      password: "your-password"
+      default_topic: "company-alerts"
+      insecure_skip_verify: false  # Set true for self-signed certs
 ```
 
 **Usage:**
 ```bash
+# Uses default server (public)
 curl -X POST http://localhost:8080/api/v1/notifications \
   -H "Content-Type: application/json" \
   -d '{
@@ -181,6 +248,17 @@ curl -X POST http://localhost:8080/api/v1/notifications \
       "click": "https://dashboard.example.com"
     }
   }'
+
+# Specify server explicitly
+curl -X POST http://localhost:8080/api/v1/notifications \
+  -H "Content-Type: application/json" \
+  -d '{
+    "type": "ntfy",
+    "account": "private",
+    "subject": "Critical Alert",
+    "body": "Server CPU at 95%",
+    "recipients": ["alerts"]
+  }'
 ```
 
 See [docs/NTFY_GUIDE.md](docs/NTFY_GUIDE.md) for advanced ntfy features (action buttons, attachments, delays, etc.).
@@ -302,7 +380,7 @@ docker run -d \
   --name notifier \
   -p 8080:8080 \
   -p 50051:50051 \
-  -v $(pwd)/config.yaml:/app/config.yaml:ro \
+  -v $(pwd)/notifier.config:/app/notifier.config:ro \
   notifier:latest
 ```
 
@@ -437,7 +515,7 @@ notifier/
 │   └── kustomization.yaml
 ├── docs/
 │   └── NTFY_GUIDE.md              # Ntfy integration guide
-├── config.yaml                     # Default configuration
+├── notifier.config                 # Default configuration
 ├── docker-compose.yaml
 ├── Dockerfile
 ├── Makefile
@@ -474,7 +552,7 @@ make help           # Show all available targets
 2. Implement `domain.Notifier` interface
 3. Add config struct to `internal/config/config.go`
 4. Register in `cmd/server/main.go`
-5. Update `config.yaml` with example config
+5. Update `notifier.config` with example config
 6. Add tests
 
 Example:
diff --git a/cmd/server/main.go b/cmd/server/main.go
index e9457ec..118d090 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -64,7 +64,7 @@ func main() {
 
 	// Check if any notifiers are registered
 	if len(factory.SupportedTypes()) == 0 {
-		logger.Fatal("No notifiers configured. Please enable at least one notifier in config.yaml")
+		logger.Fatal("No notifiers configured. Please enable at least one notifier in notifier.config")
 	}
 
 	logger.Infof("Supported notification types: %v", factory.SupportedTypes())
diff --git a/docker-compose.yaml b/docker-compose.yaml
index f0f6961..7c591e4 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -12,7 +12,7 @@ services:
       - "9090:9090"   # Metrics (future)
       - "8081:8081"   # Health check (future)
     volumes:
-      - ./config.yaml:/app/config.yaml:ro
+      - ./notifier.config:/app/notifier.config:ro
       - notifier-data:/var/lib/notifier
     environment:
       - NOTIFIER_SERVER_MODE=both
diff --git a/internal/config/config.go b/internal/config/config.go
index b4a9d04..7866234 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -66,8 +66,8 @@ func Load(configPath string) (*Config, error) {
 	setDefaults(v)
 
 	// Configure viper
-	v.SetConfigName("config")
-	v.SetConfigType("yaml")
+	v.SetConfigName("notifier")
+	v.SetConfigType("config")
 
 	if configPath != "" {
 		v.AddConfigPath(configPath)
diff --git a/k8s/configmap.yaml b/k8s/configmap.yaml
index 8a837cf..8800b5d 100644
--- a/k8s/configmap.yaml
+++ b/k8s/configmap.yaml
@@ -5,7 +5,7 @@ metadata:
   labels:
     app: notifier
 data:
-  config.yaml: |
+  notifier.config: |
     server:
       grpc_port: 50051
       rest_port: 8080
@@ -25,6 +25,31 @@ data:
     notifiers:
       stdout: true
 
+      # SMTP email configuration (supports multiple accounts)
+      smtp:
+        personal:
+          host: "smtp.gmail.com"
+          port: 587
+          username: "your-email@gmail.com"
+          password: "your-app-password"
+          from: "your-email@gmail.com"
+          use_tls: true
+          default: true
+
+      # Slack configuration (supports multiple workspaces)
+      slack:
+        main:
+          webhook_url: "https://hooks.slack.com/services/YOUR/WEBHOOK/URL"
+          username: "Notifier Bot"
+          icon_emoji: ":bell:"
+          default: true
+
+      # Ntfy configuration (supports multiple servers)
+      ntfy:
+        public:
+          server_url: "https://ntfy.sh"
+          default: true
+
     logging:
       level: "info"
       format: "json"
diff --git a/k8s/deployment.yaml b/k8s/deployment.yaml
index 3dc534e..db9b763 100644
--- a/k8s/deployment.yaml
+++ b/k8s/deployment.yaml
@@ -45,8 +45,8 @@ spec:
           value: "local"
         volumeMounts:
         - name: config
-          mountPath: /app/config.yaml
-          subPath: config.yaml
+          mountPath: /app/notifier.config
+          subPath: notifier.config
           readOnly: true
         - name: queue-storage
           mountPath: /var/lib/notifier
diff --git a/config.yaml b/notifier.config
similarity index 100%
rename from config.yaml
rename to notifier.config