diff --git a/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs b/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs
index 0763fb59..99a77ca0 100644
--- a/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs
+++ b/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs
@@ -164,11 +164,14 @@ namespace EnvelopeGenerator.Application.Services
                 throw new ArgumentNullException(nameof(dto), $"TFA Qr Code cannot sent. Receiver information is missing. Envelope receiver dto is {JsonConvert.SerializeObject(dto)}");
             if (dto.Receiver.TotpSecretkey is null)
                 throw new ArgumentNullException(nameof(dto), $"TFA Qr Code cannot sent. Receiver.TotpSecretKey is null. Envelope receiver dto is {JsonConvert.SerializeObject(dto)}");
+            if (dto.Receiver.TotpExpiration is null)
+                throw new ArgumentNullException(nameof(dto), $"TFA Qr Code cannot sent. Receiver.TotpExpiration is null. Envelope receiver dto is {JsonConvert.SerializeObject(dto)}");
 
             var totp_qr_64 = _codeGenerator.GenerateTotpQrCode(userEmail: dto.Receiver.EmailAddress, secretKey: dto.Receiver.TotpSecretkey).ToBase64String();
             return SendAsync(dto, EmailTemplateType.TotpSecret, new()
 			{
-				{"[TFA_QR_CODE]", totp_qr_64 }
+				{"[TFA_QR_CODE]", totp_qr_64 },
+				{"[TFA_EXPIRATION]", dto.Receiver.TotpExpiration }
 			});
         }
     }