diff --git a/overlay/etc/templates/env.tmpl b/overlay/etc/templates/env.tmpl
index 8b72c07..3d5b695 100644
--- a/overlay/etc/templates/env.tmpl
+++ b/overlay/etc/templates/env.tmpl
@@ -64,6 +64,7 @@ AUTHENTICATOR_DISABLE_TIME_DRIFT={{ getenv "BITWARDENRS_AUTHENTICATOR_DISABLE_TI
 ROCKET_ADDRESS=0.0.0.0
 ROCKET_PORT=8080
 
+{{ if (getenv "BITWARDENRS_SMTP_HOST") -}}
 SMTP_HOST={{ getenv "BITWARDENRS_SMTP_HOST" }}
 SMTP_FROM={{ getenv "BITWARDENRS_SMTP_FROM" }}
 SMTP_FROM_NAME={{ getenv "BITWARDENRS_SMTP_FROM_NAME" "Bitwarden_RS" }}
@@ -75,3 +76,4 @@ SMTP_PASSWORD={{ getenv "BITWARDENRS_SMTP_PASSWORD" }}
 {{ end -}}
 SMTP_AUTH_MECHANISM={{ getenv "BITWARDENRS_SMTP_AUTH_MECHANISM" "Plain" }}
 SMTP_TIMEOUT={{ getenv "BITWARDENRS_SMTP_TIMEOUT" "15" }}
+{{ end -}}