diff --git a/snappymail/v/0.0.0/app/libraries/RainLoop/Model/Account.php b/snappymail/v/0.0.0/app/libraries/RainLoop/Model/Account.php
index bd4b7ed82..958eb356a 100644
--- a/snappymail/v/0.0.0/app/libraries/RainLoop/Model/Account.php
+++ b/snappymail/v/0.0.0/app/libraries/RainLoop/Model/Account.php
@@ -45,7 +45,7 @@ abstract class Account implements \JsonSerializable
 
 	public function SmtpUser() : string
 	{
-		return $this->sSmtpUser ?: $this->oDomain->SmtpSettings()->fixUsername($this->sEmail);
+		return $this->sSmtpUser ?: ($this->oDomain ? $this->oDomain->SmtpSettings()->fixUsername($this->sEmail) : '');
 //		return $this->sSmtpUser ?: $this->sEmail ?: $this->sImapUser;
 	}