Some changes.

BlackRockReportFunction/BlackRockReportFunction.csproj

   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Storage" Version="4.0.4" />
+    <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Timer" Version="4.1.0" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.3.0" OutputItemType="Analyzer" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.6.0" />
+    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.SendGrid" Version="3.0.2" />
   </ItemGroup>
   <ItemGroup>
     <None Update="host.json">

BlackRockReportFunction/ClockifyApiIntegrationFunction.cs

+using System;
+using Microsoft.Azure.Functions.Worker;
+using Microsoft.Extensions.Logging;
+
+namespace BlackRockReportFunction
+{
+    public class ClockifyApiIntegrationFunction
+    {
+        private readonly ILogger _logger;
+
+        public ClockifyApiIntegrationFunction(ILoggerFactory loggerFactory)
+        {
+            _logger = loggerFactory.CreateLogger<ClockifyApiIntegrationFunction>();
+        }
+
+        [Function("ClockifyApiIntegrationFunction")]
+        public void Run([TimerTrigger("*/5 * * * * *")] MyInfo myTimer)
+        {
+            _logger.LogInformation($"C# Timer trigger function executed at: {DateTime.Now}");
+        }
+    }
+
+    public class MyInfo
+    {
+        public MyScheduleStatus ScheduleStatus { get; set; }
+
+        public bool IsPastDue { get; set; }
+    }
+
+    public class MyScheduleStatus
+    {
+        public DateTime Last { get; set; }
+
+        public DateTime Next { get; set; }
+
+        public DateTime LastUpdated { get; set; }
+    }
+}

BlackRockReportFunction/MailSenderFunction.cs

 using System;
 using Microsoft.Azure.Functions.Worker;
 using Microsoft.Extensions.Logging;
+using SendGrid.Helpers.Mail;
+using Microsoft.Azure.WebJobs;
 
 namespace BlackRockReportFunction
 {
         }
 
         [Function("MailSenderFunction")]
-        public void Run([QueueTrigger("myqueue-items", Connection = "")] string myQueueItem)
+        [return: SendGrid(ApiKey = "SendGridApiKey")]
+        public SendGridMessage Run([QueueTrigger("queue1")] string myQueueItem)
         {
             _logger.LogInformation($"C# Queue trigger function processed: {myQueueItem}");
+
+            var msg = new SendGridMessage()
+            {
+                From = new EmailAddress("nikola.jovanovic@dilig.net", "Nikola Jovanovic"),
+                Subject = "Test SendGrid Azure Function",
+                PlainTextContent = String.Format("If you read this text, then congratulations," +
+                " you did it! :) \n\n Also {0}", myQueueItem),
+            };
+
+            msg.AddTo(new EmailAddress("nikolajovanovic3579@gmail.com", "Nikola Jovanovic"));
+
+            return msg;
         }
     }
 }