Make exim-relay benefits section more concise

Co-authored-by: spantaleev <388669+spantaleev@users.noreply.github.com>

docs/configuring-playbook-email.md

@@ -19,17 +19,13 @@ The [Ansible role for exim-relay](https://github.com/mother-of-all-self-hosting/
 
 ## Why use exim-relay?
 
-You might wonder whether you need exim-relay or whether you can configure SMTP directly in each service (like [Synapse](configuring-playbook-synapse.md), [Matrix Authentication Service](configuring-playbook-matrix-authentication-service.md), etc.).
+**Benefits of using exim-relay** instead of configuring SMTP directly in each service ([Synapse](configuring-playbook-synapse.md), [Matrix Authentication Service](configuring-playbook-matrix-authentication-service.md), bridges, bots, etc.):
 
-**Here are the benefits of using exim-relay**:
+1. **Final delivery capability**: Can deliver emails directly if you don't have an SMTP server
 
-1. **Final delivery capability**: If you don't have an SMTP server, exim-relay can deliver emails directly. This makes it a complete solution for sending email from your Matrix services.
+2. **Centralized configuration**: Configure your upstream SMTP server once in exim-relay, then point all services there—no need to configure SMTP in each component
 
-2. **Centralized configuration**: Even if you have an existing SMTP server, configuring it separately in each Matrix component ([Synapse](configuring-playbook-synapse.md), [Matrix Authentication Service](configuring-playbook-matrix-authentication-service.md), bridges, bots, etc.) creates additional work and maintenance burden. With exim-relay, you configure your upstream SMTP server once in the exim-relay settings, and then simply point all other services to exim-relay. They automatically start using your upstream SMTP server without needing individual SMTP configuration.
-
-3. **Local spooling and reliability**: If your upstream SMTP server becomes temporarily unavailable (but exim-relay itself is still running), exim-relay will store messages locally and automatically retry delivery later. This prevents email loss during temporary outages and improves the overall reliability of your email delivery.
-
-**In summary**, exim-relay provides significant benefits with minimal overhead, serving as a reliable intermediary that simplifies configuration and improves resilience.
+3. **Local spooling**: Stores messages locally and retries delivery if your upstream SMTP server is temporarily unavailable
 
 ## Firewall settings