diff --git a/Duplicati/Library/Modules/Builtin/SendMail.cs b/Duplicati/Library/Modules/Builtin/SendMail.cs
index ad109269c..db72ca406 100644
--- a/Duplicati/Library/Modules/Builtin/SendMail.cs
+++ b/Duplicati/Library/Modules/Builtin/SendMail.cs
@@ -166,7 +166,7 @@ namespace Duplicati.Library.Modules.Builtin
             new CommandLineArgument(OPTION_BODY, CommandLineArgument.ArgumentType.String, Strings.SendMail.OptionBodyShort, Strings.SendMail.OptionBodyLong, DEFAULT_BODY),
             new CommandLineArgument(OPTION_SERVER, CommandLineArgument.ArgumentType.String, Strings.SendMail.OptionServerShort, Strings.SendMail.OptionServerLong),
             new CommandLineArgument(OPTION_USERNAME, CommandLineArgument.ArgumentType.String, Strings.SendMail.OptionUsernameShort, Strings.SendMail.OptionUsernameLong),
-            new CommandLineArgument(OPTION_PASSWORD, CommandLineArgument.ArgumentType.String, Strings.SendMail.OptionPasswordShort, Strings.SendMail.OptionPasswordLong),
+            new CommandLineArgument(OPTION_PASSWORD, CommandLineArgument.ArgumentType.Password, Strings.SendMail.OptionPasswordShort, Strings.SendMail.OptionPasswordLong),
             new CommandLineArgument(OPTION_SENDLEVEL, CommandLineArgument.ArgumentType.String, Strings.SendMail.OptionSendlevelShort, Strings.SendMail.OptionSendlevelLong(ParsedResultType.Success.ToString(), ParsedResultType.Warning.ToString(), ParsedResultType.Error.ToString(), ParsedResultType.Fatal.ToString(), "All"), DEFAULT_LEVEL, null, Enum.GetNames(typeof(ParsedResultType)).Union(new string [] { "All" }).ToArray()),
             new CommandLineArgument(OPTION_SENDALL, CommandLineArgument.ArgumentType.Boolean, Strings.SendHttpMessage.SendhttpanyoperationShort, Strings.SendHttpMessage.SendhttpanyoperationLong),
             new CommandLineArgument(OPTION_EXTRA_PARAMETERS, CommandLineArgument.ArgumentType.String, Strings.SendMail.SendmailextraparametersShort, Strings.SendMail.SendmailextraparametersLong),