diff --git a/docs/self-hosting/configuration/envars.mdx b/docs/self-hosting/configuration/envars.mdx
index 9412ff936..e35dc2503 100644
--- a/docs/self-hosting/configuration/envars.mdx
+++ b/docs/self-hosting/configuration/envars.mdx
@@ -424,7 +424,7 @@ SMTP_TLS_REJECT_UNAUTHORIZED=true
 ```
 
 <Note>
-    The `SMTP_CUSTOM_CA_CERT` environment variable **must be encoded in base64 format**
+    The `SMTP_CUSTOM_CA_CERT` environment variable **must be encoded in base64 format**. Use the command below to encode your certificate: `echo "<certificate>" | base64`
 </Note>
 
 ## Authentication