diff --git a/src/Core/Abstractions/IApiService.cs b/src/Core/Abstractions/IApiService.cs
index 6184065cf..54ee63451 100644
--- a/src/Core/Abstractions/IApiService.cs
+++ b/src/Core/Abstractions/IApiService.cs
@@ -47,6 +47,6 @@ namespace Bit.Core.Abstractions
         Task<List<BreachAccountResponse>> GetHibpBreachAsync(string username);
         Task PostTwoFactorEmailAsync(TwoFactorEmailRequest request);
         Task PutDeviceTokenAsync(string identifier, DeviceTokenRequest request);
-        Task PostEventsCollectAsync(EventRequest request);
+        Task PostEventsCollectAsync(IEnumerable<EventRequest> request);
     }
 }
diff --git a/src/Core/Abstractions/IEventService.cs b/src/Core/Abstractions/IEventService.cs
new file mode 100644
index 000000000..0f0a51bf0
--- /dev/null
+++ b/src/Core/Abstractions/IEventService.cs
@@ -0,0 +1,12 @@
+using System.Threading.Tasks;
+using Bit.Core.Enums;
+
+namespace Bit.Core.Abstractions
+{
+    public interface IEventService
+    {
+        Task ClearEventsAsync();
+        Task CollectAsync(EventType eventType, string cipherId = null, bool uploadImmediately = false);
+        Task UploadEventsAsync();
+    }
+}
\ No newline at end of file
diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index cf4339f70..f9d4f8e0a 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -32,6 +32,7 @@
         public static string MigratedFromV1 = "migratedFromV1";
         public static string MigratedFromV1AutofillPromptShown = "migratedV1AutofillPromptShown";
         public static string TriedV1Resync = "triedV1Resync";
+        public static string EventCollectionKey = "eventCollection";
         public const int SelectFileRequestCode = 42;
         public const int SelectFilePermissionRequestCode = 43;
     }
diff --git a/src/Core/Models/Data/EventData.cs b/src/Core/Models/Data/EventData.cs
new file mode 100644
index 000000000..49f0957f3
--- /dev/null
+++ b/src/Core/Models/Data/EventData.cs
@@ -0,0 +1,12 @@
+using Bit.Core.Enums;
+using System;
+
+namespace Bit.Core.Models.Data
+{
+    public class EventData : Data
+    {
+        public EventType Type { get; set; }
+        public string CipherId { get; set; }
+        public DateTime Date { get; set; }
+    }
+}
diff --git a/src/Core/Models/Request/EventRequest.cs b/src/Core/Models/Request/EventRequest.cs
index 817491c68..d1c728287 100644
--- a/src/Core/Models/Request/EventRequest.cs
+++ b/src/Core/Models/Request/EventRequest.cs
@@ -1,5 +1,5 @@
 using Bit.Core.Enums;
-using Bit.Core.Models.Domain;
+using System;
 
 namespace Bit.Core.Models.Request
 {
@@ -7,5 +7,6 @@ namespace Bit.Core.Models.Request
     {
         public EventType Type { get; set; }
         public string CipherId { get; set; }
+        public DateTime Date { get; set; }
     }
 }
diff --git a/src/Core/Services/ApiService.cs b/src/Core/Services/ApiService.cs
index 68ae77ed8..9280b314e 100644
--- a/src/Core/Services/ApiService.cs
+++ b/src/Core/Services/ApiService.cs
@@ -298,7 +298,7 @@ namespace Bit.Core.Services
 
         #region Event APIs
 
-        public async Task PostEventsCollectAsync(EventRequest request)
+        public async Task PostEventsCollectAsync(IEnumerable<EventRequest> request)
         {
             using(var requestMessage = new HttpRequestMessage())
             {
diff --git a/src/Core/Services/EventService.cs b/src/Core/Services/EventService.cs
new file mode 100644
index 000000000..44b0011d1
--- /dev/null
+++ b/src/Core/Services/EventService.cs
@@ -0,0 +1,106 @@
+using Bit.Core.Abstractions;
+using Bit.Core.Enums;
+using Bit.Core.Exceptions;
+using Bit.Core.Models.Data;
+using Bit.Core.Models.Request;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Bit.Core.Services
+{
+    public class EventService : IEventService
+    {
+        private readonly IStorageService _storageService;
+        private readonly IApiService _apiService;
+        private readonly IUserService _userService;
+        private readonly ICipherService _cipherService;
+
+        public EventService(
+            IStorageService storageService,
+            IApiService apiService,
+            IUserService userService,
+            ICipherService cipherService)
+        {
+            _storageService = storageService;
+            _apiService = apiService;
+            _userService = userService;
+            _cipherService = cipherService;
+        }
+
+        public async Task CollectAsync(EventType eventType, string cipherId = null, bool uploadImmediately = false)
+        {
+            var authed = await _userService.IsAuthenticatedAsync();
+            if(!authed)
+            {
+                return;
+            }
+            var organizations = await _userService.GetAllOrganizationAsync();
+            if(organizations == null)
+            {
+                return;
+            }
+            var orgIds = new HashSet<string>(organizations.Where(o => o.UseEvents).Select(o => o.Id));
+            if(!orgIds.Any())
+            {
+                return;
+            }
+            if(cipherId != null)
+            {
+                var cipher = await _cipherService.GetAsync(cipherId);
+                if(cipher?.OrganizationId == null || !orgIds.Contains(cipher.OrganizationId))
+                {
+                    return;
+                }
+            }
+            var eventCollection = await _storageService.GetAsync<List<EventData>>(Constants.EventCollectionKey);
+            if(eventCollection == null)
+            {
+                eventCollection = new List<EventData>();
+            }
+            eventCollection.Add(new EventData
+            {
+                Type = eventType,
+                CipherId = cipherId,
+                Date = DateTime.UtcNow
+            });
+            await _storageService.SaveAsync(Constants.EventCollectionKey, eventCollection);
+            if(uploadImmediately)
+            {
+                await UploadEventsAsync();
+            }
+        }
+
+        public async Task UploadEventsAsync()
+        {
+            var authed = await _userService.IsAuthenticatedAsync();
+            if(!authed)
+            {
+                return;
+            }
+            var eventCollection = await _storageService.GetAsync<List<EventData>>(Constants.EventCollectionKey);
+            if(eventCollection == null || !eventCollection.Any())
+            {
+                return;
+            }
+            var request = eventCollection.Select(e => new EventRequest
+            {
+                Type = e.Type,
+                CipherId = e.CipherId,
+                Date = e.Date
+            });
+            try
+            {
+                await _apiService.PostEventsCollectAsync(request);
+                await ClearEventsAsync();
+            }
+            catch(ApiException) { }
+        }
+
+        public async Task ClearEventsAsync()
+        {
+            await _storageService.RemoveAsync(Constants.EventCollectionKey);
+        }
+    }
+}