diff --git a/src/Api/Controllers/SharesController.cs b/src/Api/Controllers/SharesController.cs
index 3ea2021ca..31448b6df 100644
--- a/src/Api/Controllers/SharesController.cs
+++ b/src/Api/Controllers/SharesController.cs
@@ -16,13 +16,16 @@ namespace Bit.Api.Controllers
     {
         private readonly IShareRepository _shareRepository;
         private readonly IUserService _userService;
+        private readonly ICipherService _cipherService;
 
         public SharesController(
             IShareRepository shareRepository,
-            IUserService userService)
+            IUserService userService,
+            ICipherService cipherService)
         {
             _shareRepository = shareRepository;
             _userService = userService;
+            _cipherService = cipherService;
         }
 
         [HttpGet("{id}")]
@@ -42,7 +45,7 @@ namespace Bit.Api.Controllers
         public async Task<ShareResponseModel> Post([FromBody]ShareRequestModel model)
         {
             var share = model.ToShare(_userService.GetProperUserId(User).Value);
-            await _shareRepository.CreateAsync(share);
+            await _cipherService.ShareAsync(share, model.Email);
 
             var response = new ShareResponseModel(share);
             return response;
diff --git a/src/Api/Models/Request/ShareRequestModel.cs b/src/Api/Models/Request/ShareRequestModel.cs
index 6655b12c5..c66b8ec90 100644
--- a/src/Api/Models/Request/ShareRequestModel.cs
+++ b/src/Api/Models/Request/ShareRequestModel.cs
@@ -8,8 +8,7 @@ namespace Bit.Api.Models
     public class ShareRequestModel
     {
         [Required]
-        [StringLength(36)]
-        public string UserId { get; set; }
+        public string Email { get; set; }
         [Required]
         [StringLength(36)]
         public string CipherId { get; set; }
@@ -25,7 +24,6 @@ namespace Bit.Api.Models
 
         public Share ToShare(Share existingShare)
         {
-            existingShare.UserId = new Guid(UserId);
             existingShare.CipherId = new Guid(CipherId);
             existingShare.Key = Key;
 
diff --git a/src/Core/Services/ICipherService.cs b/src/Core/Services/ICipherService.cs
index 789ad0759..2e9cad990 100644
--- a/src/Core/Services/ICipherService.cs
+++ b/src/Core/Services/ICipherService.cs
@@ -8,6 +8,8 @@ namespace Bit.Core.Services
     {
         Task SaveAsync(Cipher cipher);
         Task DeleteAsync(Cipher cipher);
-        Task ImportCiphersAsync(List<Cipher> folders, List<Cipher> ciphers, IEnumerable<KeyValuePair<int, int>> folderRelationships);
+        Task ImportCiphersAsync(List<Cipher> folders, List<Cipher> ciphers,
+            IEnumerable<KeyValuePair<int, int>> folderRelationships);
+        Task ShareAsync(Share share, string email);
     }
 }
diff --git a/src/Core/Services/Implementations/CipherService.cs b/src/Core/Services/Implementations/CipherService.cs
index e8834a51e..3d172ff01 100644
--- a/src/Core/Services/Implementations/CipherService.cs
+++ b/src/Core/Services/Implementations/CipherService.cs
@@ -10,13 +10,19 @@ namespace Bit.Core.Services
     public class CipherService : ICipherService
     {
         private readonly ICipherRepository _cipherRepository;
+        private readonly IShareRepository _shareRepository;
+        private readonly IUserRepository _userRepository;
         private readonly IPushService _pushService;
 
         public CipherService(
             ICipherRepository cipherRepository,
+            IShareRepository shareRepository,
+            IUserRepository userRepository,
             IPushService pushService)
         {
             _cipherRepository = cipherRepository;
+            _shareRepository = shareRepository;
+            _userRepository = userRepository;
             _pushService = pushService;
         }
 
@@ -84,5 +90,24 @@ namespace Bit.Core.Services
                 await _pushService.PushSyncCiphersAsync(userId.Value);
             }
         }
+
+        public async Task ShareAsync(Share share, string email)
+        {
+            // TODO: Make sure share does not already exist between these two users.
+
+            var user = await _userRepository.GetByEmailAsync(email);
+            if(user == null)
+            {
+                return;
+            }
+
+            share.UserId = user.Id;
+
+            // TODO: Permissions and status
+            share.Permissions = null;
+            share.Status = Enums.ShareStatusType.Accepted;
+
+            await _shareRepository.CreateAsync(share);
+        }
     }
 }