diff --git a/EnvelopeGenerator.Application/DTOs/Receiver/ReceiverReadDto.cs b/EnvelopeGenerator.Application/DTOs/Receiver/ReceiverReadDto.cs
index 49654fea..6d1b5a19 100644
--- a/EnvelopeGenerator.Application/DTOs/Receiver/ReceiverReadDto.cs
+++ b/EnvelopeGenerator.Application/DTOs/Receiver/ReceiverReadDto.cs
@@ -1,5 +1,6 @@
 using DigitalData.Core.Abstractions;
 using DigitalData.Core.DTO;
+using DigitalData.EmailProfilerDispatcher.Abstraction.Attributes;
 using EnvelopeGenerator.Application.DTOs.EnvelopeReceiver;
 using System.Text.Json.Serialization;
 
@@ -19,6 +20,7 @@ namespace EnvelopeGenerator.Application.DTOs.Receiver
 
         public string? TotpSecretkey { get; set; } = null;
 
+        [TemplatePlaceholder("[TFA_QR_EXPIRATION]")]
         public DateTime? TotpExpiration { get; set; } = null;
     };
 }
\ No newline at end of file
diff --git a/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs b/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs
index 5e6ca13e..58a3c6b8 100644
--- a/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs
+++ b/EnvelopeGenerator.Application/Services/EnvelopeMailService.cs
@@ -32,7 +32,7 @@ namespace EnvelopeGenerator.Application.Services
 			_placeholders = mailConfig.Value.Placeholders;
         }
 
-		private async Task<Dictionary<string, string>> CreatePlaceholders(string? accessCode = null, EnvelopeReceiverDto? envelopeReceiverDto = null, EnvelopeReceiverReadOnlyDto? readOnlyDto = null)
+		private async Task<Dictionary<string, string>> CreatePlaceholders(string? accessCode = null, EnvelopeReceiverDto? envelopeReceiverDto = null)
 		{
 			if (accessCode is not null)
                 _placeholders["[DOCUMENT_ACCESS_CODE]"] = accessCode;
@@ -64,9 +64,9 @@ namespace EnvelopeGenerator.Application.Services
             return _placeholders;
         }
 
-        public async Task<DataResult<int>> SendAccessCodeAsync(EnvelopeReceiverDto dto) => await SendAsync(dto: dto, tempType: Constants.EmailTemplateType.DocumentAccessCodeReceived);
+        public async Task<DataResult<int>> SendAccessCodeAsync(EnvelopeReceiverDto dto) => await SendAsync(dto: dto, tempType: EmailTemplateType.DocumentAccessCodeReceived);
 
-        public async Task<DataResult<int>> SendAsync(EnvelopeReceiverDto dto, Constants.EmailTemplateType tempType)
+        public async Task<DataResult<int>> SendAsync(EnvelopeReceiverDto dto, EmailTemplateType tempType)
         {
 			var tempSerResult = await _tempService.ReadByNameAsync(tempType);
 			if (tempSerResult.IsFailed)
@@ -111,7 +111,7 @@ namespace EnvelopeGenerator.Application.Services
 
 		public async Task<DataResult<int>> SendAsync(EnvelopeReceiverReadOnlyDto dto)
 		{
-            var tempSerResult = await _tempService.ReadByNameAsync(Constants.EmailTemplateType.DocumentShared);
+            var tempSerResult = await _tempService.ReadByNameAsync(EmailTemplateType.DocumentShared);
             if (tempSerResult.IsFailed)
                 return tempSerResult.ToFail<int>().Notice(LogLevel.Error, Flag.DataIntegrityIssue, $"The email cannot send because '{Constants.EmailTemplateType.DocumentShared}' template cannot found.");
             var temp = tempSerResult.Data;
diff --git a/EnvelopeGenerator.Common/Constants.vb b/EnvelopeGenerator.Common/Constants.vb
index d04f3bfd..d6c09439 100644
--- a/EnvelopeGenerator.Common/Constants.vb
+++ b/EnvelopeGenerator.Common/Constants.vb
@@ -99,6 +99,7 @@
         DocumentCompleted
         DocumentAccessCodeReceived
         DocumentShared
+        TotpSecret
     End Enum
 
     Public Enum EncodeType
diff --git a/EnvelopeGenerator.Web/Controllers/HomeController.cs b/EnvelopeGenerator.Web/Controllers/HomeController.cs
index 89341ae3..d5ce93ac 100644
--- a/EnvelopeGenerator.Web/Controllers/HomeController.cs
+++ b/EnvelopeGenerator.Web/Controllers/HomeController.cs
@@ -239,7 +239,7 @@ namespace EnvelopeGenerator.Web.Controllers
                                         rcv.TotpExpiration = DateTime.Now.AddMonths(1);
                                         await _rcvService.UpdateAsync(rcv);
                                         var totp_qr_64 = _codeGenerator.GenerateTotpQrCode(userEmail: rcv.EmailAddress, secretKey: rcv.TotpSecretkey).ToBase64String();
-                                        // send by email
+                                        await _mailService.SendAsync(er_secret, EmailTemplateType.TotpSecret);
                                     }
                                     return await TFAView(auth.UserSelectSMS);
                                 }