Updating Unsend (now Usesend) service docs + documenting SMTP config

docs/.vitepress/theme/components/Services/List.vue

@@ -1697,9 +1697,9 @@ const services = [
         category: 'Development'
     },
     {
-        name: 'Unsend',
-        slug: 'unsend',
-        icon: '/docs/images/services/unsend-logo.svg',
+        name: 'Usesend',
+        slug: 'usesend',
+        icon: '/docs/images/services/usesend-logo.png',
         description: 'Open-source email recall service.',
         category: 'Email'
     },

docs/services/all.md

@@ -196,7 +196,7 @@ Complete directory of all one-click services available in Coolify, organized by
 
 ## Email
 
-- [Unsend](/services/unsend) - An open source bulk email manager
+- [Usesend](/services/usesend) - An open source bulk email manager
 
 ## Family
 

docs/services/usesend.md

@@ -0,0 +1,113 @@
+---
+title: Usesend
+description: "Send emails on Coolify with Usesend for developer-focused email API, templates, testing, and transactional email delivery service."
+---
+
+# Usesend
+<br/>
+<ZoomableImage src="/docs/images/services/usesend-hero-dark.webp" alt="Usesend dashboard" />
+
+## What is Usesend
+
+Usesend is an open-source alternative to Resend, Sendgrid, Mailgun and Postmark etc.
+
+There are some setup to be made, please refer to the [official documentation](https://docs.usesend.com/self-hosting/overview?utm_source=coolify.io) for more information.
+
+## SMTP Configuration
+
+Running Usesend with SMTP support requires an additional relay component to handle incoming SMTP requests. This relay service binds to multiple ports supporting both SSL and TLS connections.
+
+### Prerequisites
+
+Before configuring the SMTP relay, you need to add a certificate dumper to your Traefik proxy configuration to make Coolify's SSL certificates accessible to the relay:
+
+1. Navigate to **Server** → **Proxy** → **Configuration**
+2. Add the following certificate dumper configuration:
+
+```yaml
+traefik-certs-dumper:
+  image: ghcr.io/kereis/traefik-certs-dumper:latest
+  container_name: traefik-certs-dumper
+  restart: unless-stopped
+  depends_on:
+    - traefik
+  volumes:
+    - /etc/localtime:/etc/localtime:ro
+    - /data/coolify/proxy:/traefik:ro
+    - /data/coolify/certs:/output
+```
+
+This service extracts Traefik-managed certificates and outputs them to `/data/coolify/certs/`, making them available for the SMTP relay to use for SSL and TLS connections.
+
+### Adding the SMTP Relay Service
+
+Add the following service at the end of the compose file (by clicking on "Edit compose file" when adding the service):
+
+:::info
+Replace `###USESEND FQDN (e.g. usesend.example.com)###` with your unsend domain name in the configuration below.
+:::
+```yaml
+  smtp-server:
+    container_name: usesend-smtp-server
+    image: 'usesend/smtp-proxy:latest'
+    volumes:
+      - type: bind
+        source: /data/coolify/certs/###USESEND FQDN (e.g. usesend.example.com)###/key.pem
+        target: /data/certs/key.pem
+        read_only: true
+      - type: bind
+        source: /data/coolify/certs/###USESEND FQDN (e.g. usesend.example.com)###/cert.pem
+        target: /data/certs/cert.pem
+        read_only: true
+    environment:
+      - SMTP_AUTH_USERNAME=usesend
+      - SERVICE_FQDN_SMTP
+      - 'USESEND_BASE_URL=${SERVICE_URL_USESEND_3000}'
+      - USESEND_API_KEY_PATH=/data/certs/key.pem
+      - USESEND_API_CERT_PATH=/data/certs/cert.pem
+    ports:
+      - '25:25'
+      - '587:587'
+      - '2587:2587'
+      - '465:465'
+      - '2465:2465'
+    healthcheck:
+      test:
+        - CMD
+        - nc
+        - -z
+        - localhost
+        - "25"
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
+```
+
+Then add those environment variables to the main Usesend service:
+
+```yaml
+      - SMTP_HOST=${SERVICE_FQDN_SMTP}
+      - SMTP_USER=${SMTP_AUTH_USERNAME}
+```
+
+### Using Usesend SMTP in Your Applications
+
+Once the relay is deployed, configure your sending applications with the following settings:
+
+- **SMTP Host**: Your Usesend URL
+- **SMTP Port**: 465 (SSL) or 587 (TLS/STARTTLS)
+- **Username**: `usesend`
+- **Password**: Your Usesend API key (generated from the Usesend dashboard)
+
+The relay supports multiple ports for compatibility with different applications:
+- **Standard SMTP**: Ports 25, 587, 2587
+- **SSL/TLS**: Ports 465, 2465
+
+You can verify that emails are being sent successfully through Usesend's deliverability reports and message previews in the dashboard.
+
+## Links
+
+- [Official Documentation](https://docs.usesend.com/self-hosting/overview?utm_source=coolify.io)
+- [Official Website ↗](https://usesend.com?utm_source=coolify.io)
+- [GitHub ↗](https://github.com/usesend/usesend)