Email notification errors with "fromAddress missing from config URL"

[0x4E4448]

Describe the bug

When configuring email notification through environment variables the container experiences a fatal error. The exact error being:

Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n

The environment variables configured were:

- WATCHTOWER_NOTIFICATIONS=email
- WATCHTOWER_NOTIFICATIONS_LEVEL=debug
- WATCHTOWER_NOTIFICATIONS_EMAIL_FROM=watchtower@mydomaincom
- WATCHTOWER_NOTIFICATIONS_EMAIL_TO=watchtower@mydomain.com
- WATCHTOWER_NOTIFICATIONS_EMAIL_SERVER=mx.mydomain.com
- WATCHTOWER_NOTIFICATIONS_EMAIL_SERVER_PORT=25
- WATCHTOWER_NOTIFICATIONS_EMAIL_DELAY=2

If I configure using the notification URL, everything works as desired.

Version: 1.7.1
Deployed with Docker Compose.

Steps to reproduce

1. Configure environment variables detailed above in compose.yaml
2. docker compose up (or docker compose up -d

Expected behavior

Container should start and begin monitoring

Screenshots

No response

Environment

• Platform: Ubuntu 24.04
• Architecture: x86_64
• Docker version: 27.3.1

Your logs

[+] Running 1/0
 ✔ Container watchtower-watchtower-1  Created                                                                                                                                            0.0s 
Attaching to watchtower-1
watchtower-1  | time="2024-12-01T04:07:31Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"
watchtower-1 exited with code 1
watchtower-1  | time="2024-12-01T04:07:32Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"
watchtower-1  | time="2024-12-01T04:07:32Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"
watchtower-1  | time="2024-12-01T04:07:33Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"
watchtower-1  | time="2024-12-01T04:07:34Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"
watchtower-1  | time="2024-12-01T04:07:36Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"
watchtower-1  | time="2024-12-01T04:07:39Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"
watchtower-1  | time="2024-12-01T04:07:46Z" level=fatal msg="Failed to initialize Shoutrrr notifications: error initializing router services: fromAddress missing from config URL\n"

Additional context

No response

[github-actions]

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