diff --git a/Sources/SwiftDevRant/DevRant/DevRantApiError.swift b/Sources/SwiftDevRant/DevRant/DevRantApiError.swift
index 57e9921..c1226dd 100644
--- a/Sources/SwiftDevRant/DevRant/DevRantApiError.swift
+++ b/Sources/SwiftDevRant/DevRant/DevRantApiError.swift
@@ -1,6 +1,6 @@
 /// Represents an error coming directly from the devrant API.
 public struct DevRantApiError: Swift.Error {
-    let message: String
+    public let message: String
 }
 
 public extension DevRantApiError {
diff --git a/Sources/SwiftDevRant/Models/AttachedImage.swift b/Sources/SwiftDevRant/Models/AttachedImage.swift
index 80aa375..0bb03df 100644
--- a/Sources/SwiftDevRant/Models/AttachedImage.swift
+++ b/Sources/SwiftDevRant/Models/AttachedImage.swift
@@ -1,5 +1,5 @@
 /// An image that the user has uploaded for his rant or comment.
-public struct AttachedImage: Hashable {
+public struct AttachedImage: Hashable, Sendable {
     public let url: String
     public let width: Int
     public let height: Int
diff --git a/Sources/SwiftDevRant/Models/AuthToken.swift b/Sources/SwiftDevRant/Models/AuthToken.swift
index b3c4a64..6a79832 100644
--- a/Sources/SwiftDevRant/Models/AuthToken.swift
+++ b/Sources/SwiftDevRant/Models/AuthToken.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct AuthToken: Hashable {
+public struct AuthToken: Hashable, Sendable {
     public let id: Int
     public let key: String
     public let expireTime: Date
@@ -18,21 +18,21 @@ public struct AuthToken: Hashable {
     }
 }
 
-extension AuthToken {
-    struct CodingData: Codable {
-        struct Container: Codable {
+public extension AuthToken {
+    public struct CodingData: Codable {
+        public struct Container: Codable {
             let auth_token: AuthToken.CodingData
         }
         
-        let id: Int
-        let key: String
-        let expire_time: Int
-        let user_id: Int
+        public let id: Int
+        public let key: String
+        public let expire_time: Int
+        public let user_id: Int
     }
 }
 
-extension AuthToken.CodingData {
-    var decoded: AuthToken {
+public extension AuthToken.CodingData {
+    public var decoded: AuthToken {
         .init(
             id: id,
             key: key,
@@ -41,3 +41,14 @@ extension AuthToken.CodingData {
         )
     }
 }
+
+public extension AuthToken {
+    public var encoded: AuthToken.CodingData {
+        .init(
+            id: id,
+            key: key,
+            expire_time: Int(expireTime.timeIntervalSince1970),
+            user_id: userId
+        )
+    }
+}
diff --git a/Sources/SwiftDevRant/Models/Collaboration.swift b/Sources/SwiftDevRant/Models/Collaboration.swift
index 50ca926..385853c 100644
--- a/Sources/SwiftDevRant/Models/Collaboration.swift
+++ b/Sources/SwiftDevRant/Models/Collaboration.swift
@@ -1,5 +1,5 @@
-public struct Collaboration: Hashable {
-    public enum Kind: Int {
+public struct Collaboration: Hashable, Sendable {
+    public enum Kind: Int, Sendable {
         case openSourceIdea = 1
         case existingOpenSourceProject = 2
         case projectIdea = 3
diff --git a/Sources/SwiftDevRant/Models/Comment.swift b/Sources/SwiftDevRant/Models/Comment.swift
index 5aa743f..647026d 100644
--- a/Sources/SwiftDevRant/Models/Comment.swift
+++ b/Sources/SwiftDevRant/Models/Comment.swift
@@ -1,7 +1,7 @@
 import Foundation
 
 /// A comment posted by a user inside of a rant.
-public struct Comment: Identifiable, Hashable {
+public struct Comment: Identifiable, Hashable, Sendable {
     /// The id of this comment.
     public let id: Int
     
diff --git a/Sources/SwiftDevRant/Models/DownvoteReason.swift b/Sources/SwiftDevRant/Models/DownvoteReason.swift
index b43aa5a..9b901db 100644
--- a/Sources/SwiftDevRant/Models/DownvoteReason.swift
+++ b/Sources/SwiftDevRant/Models/DownvoteReason.swift
@@ -1,5 +1,5 @@
 /// Represents the reason for downvoting.
-public enum DownvoteReason: Int, Hashable {
+public enum DownvoteReason: Int, Hashable, Sendable {
     case notForMe = 0
     case repost = 1
     case offensiveOrSpam = 2
diff --git a/Sources/SwiftDevRant/Models/Link.swift b/Sources/SwiftDevRant/Models/Link.swift
index 4c5a648..cd08271 100644
--- a/Sources/SwiftDevRant/Models/Link.swift
+++ b/Sources/SwiftDevRant/Models/Link.swift
@@ -1,8 +1,8 @@
 /// A URL or a user mention link in a rant or comment.
-public struct Link: Hashable {
-    public enum Kind {
-        case url
-        case userMention
+public struct Link: Hashable, Sendable {
+    public enum Kind: String, Sendable {
+        case url = "url"
+        case userMention = "mention"
     }
     
     public let kind: Kind
@@ -47,7 +47,7 @@ extension Link {
 extension Link.CodingData {
     var decoded: Link {
         .init(
-            kind: type == "mention" ? .userMention : .url,
+            kind: .init(rawValue: type) ?? .url,
             url: url,
             shortURL: short_url,
             title: title,
diff --git a/Sources/SwiftDevRant/Models/Notification.swift b/Sources/SwiftDevRant/Models/Notification.swift
index e5334aa..4baf42e 100644
--- a/Sources/SwiftDevRant/Models/Notification.swift
+++ b/Sources/SwiftDevRant/Models/Notification.swift
@@ -1,8 +1,8 @@
 import Foundation
 
 /// A notification about activities in a rant or a comment.
-public struct Notification: Hashable, Identifiable {
-    public enum Kind: String {
+public struct Notification: Hashable, Identifiable, Sendable {
+    public enum Kind: String, Sendable {
         /// An upvote for a rant.
         case rantUpvote = "content_vote"
         
diff --git a/Sources/SwiftDevRant/Models/NotificationFeed+Mapping.swift b/Sources/SwiftDevRant/Models/NotificationFeed+Mapping.swift
new file mode 100644
index 0000000..acd620f
--- /dev/null
+++ b/Sources/SwiftDevRant/Models/NotificationFeed+Mapping.swift
@@ -0,0 +1,57 @@
+import Foundation
+
+public extension NotificationFeed {
+    public struct MappedNotificationItem: Hashable, Sendable {
+        public let rantId: Rant.ID
+        public let commentId: Comment.ID?
+        public let userId: Int
+        public let userAvatar: User.Avatar
+        public let userName: String
+        public let notificationKind: Notification.Kind
+        public let created: Date
+        public let isRead: Bool
+        
+        public init(rantId: Rant.ID, commentId: Comment.ID?, userId: Int, userAvatar: User.Avatar, userName: String, notificationKind: Notification.Kind, created: Date, isRead: Bool) {
+            self.rantId = rantId
+            self.commentId = commentId
+            self.userId = userId
+            self.userAvatar = userAvatar
+            self.userName = userName
+            self.notificationKind = notificationKind
+            self.created = created
+            self.isRead = isRead
+        }
+    }
+    
+    public var mappedItems: [MappedNotificationItem] {
+        notifications.map { notification in
+            let rantId = notification.rantId
+            let commentId = notification.commentId
+            let userId = notification.userId
+            let userInfo = userInfos.first { $0.userId == String(userId) }
+            let userAvatar = userInfo?.avatar ?? .init(colorHex: "cccccc", imageUrlPath: nil)
+            let userName = userInfo?.username ?? ""
+            
+            return MappedNotificationItem(
+                rantId: rantId,
+                commentId: commentId,
+                userId: userId,
+                userAvatar: userAvatar,
+                userName: userName,
+                notificationKind: notification.kind,
+                created: notification.created,
+                isRead: notification.read
+            )
+        }
+    }
+    
+    public var unreadByCategory: [NotificationFeed.Category: Int] {
+        [
+            .all:           unreadNumbers.all,
+            .upvotes:       unreadNumbers.upvotes,
+            .mentions:      unreadNumbers.mentions,
+            .comments:      unreadNumbers.comments,
+            .subscriptions: unreadNumbers.subscriptions,
+        ]
+    }
+}
diff --git a/Sources/SwiftDevRant/Models/NotificationFeed.UnreadNumbers.swift b/Sources/SwiftDevRant/Models/NotificationFeed.UnreadNumbers.swift
index bd4ac99..8f54654 100644
--- a/Sources/SwiftDevRant/Models/NotificationFeed.UnreadNumbers.swift
+++ b/Sources/SwiftDevRant/Models/NotificationFeed.UnreadNumbers.swift
@@ -1,6 +1,6 @@
 public extension NotificationFeed {
     /// Holds numbers of unread notifications for each type of notification.
-    struct UnreadNumbers: Decodable, Hashable {
+    struct UnreadNumbers: Decodable, Hashable, Sendable {
         /// The total number of unread notifications
         public let all: Int
         
diff --git a/Sources/SwiftDevRant/Models/NotificationFeed.UserInfo.swift b/Sources/SwiftDevRant/Models/NotificationFeed.UserInfo.swift
index d4eaf27..42785fc 100644
--- a/Sources/SwiftDevRant/Models/NotificationFeed.UserInfo.swift
+++ b/Sources/SwiftDevRant/Models/NotificationFeed.UserInfo.swift
@@ -1,5 +1,5 @@
 public extension NotificationFeed {
-    struct UserInfo: Hashable {
+    struct UserInfo: Hashable, Sendable {
         public let avatar: User.Avatar
         public let username: String
         public let userId: String //TODO: why is this String? The other user ids are Int.
diff --git a/Sources/SwiftDevRant/Models/NotificationFeed.swift b/Sources/SwiftDevRant/Models/NotificationFeed.swift
index 93914f9..988d559 100644
--- a/Sources/SwiftDevRant/Models/NotificationFeed.swift
+++ b/Sources/SwiftDevRant/Models/NotificationFeed.swift
@@ -1,8 +1,8 @@
 import Foundation
 
 /// Contains a list of all notifications for the logged in user and the numbers of unread notifications.
-public struct NotificationFeed: Hashable {
-    public enum Category: String, CaseIterable {
+public struct NotificationFeed: Hashable, Sendable {
+    public enum Category: String, CaseIterable, Sendable {
         case all = ""
         case upvotes = "upvotes"
         case mentions = "mentions"
diff --git a/Sources/SwiftDevRant/Models/Profile.Content.Elements.swift b/Sources/SwiftDevRant/Models/Profile.Content.Elements.swift
index 1919870..3241b88 100644
--- a/Sources/SwiftDevRant/Models/Profile.Content.Elements.swift
+++ b/Sources/SwiftDevRant/Models/Profile.Content.Elements.swift
@@ -1,5 +1,5 @@
 public extension Profile.Content {
-    struct Elements: Hashable {
+    struct Elements: Hashable, Sendable {
         /// The rants that the user has created.
         public let rants: [Rant]
         
diff --git a/Sources/SwiftDevRant/Models/Profile.Content.Numbers.swift b/Sources/SwiftDevRant/Models/Profile.Content.Numbers.swift
index 40f8735..7f9aac2 100644
--- a/Sources/SwiftDevRant/Models/Profile.Content.Numbers.swift
+++ b/Sources/SwiftDevRant/Models/Profile.Content.Numbers.swift
@@ -1,5 +1,5 @@
 public extension Profile.Content {
-    struct Numbers: Hashable {
+    struct Numbers: Hashable, Sendable {
         /// The number of rants that the user has created.
         public let rants: Int
         
diff --git a/Sources/SwiftDevRant/Models/Profile.Content.swift b/Sources/SwiftDevRant/Models/Profile.Content.swift
index 2e32599..4b82f28 100644
--- a/Sources/SwiftDevRant/Models/Profile.Content.swift
+++ b/Sources/SwiftDevRant/Models/Profile.Content.swift
@@ -1,5 +1,5 @@
 public extension Profile {
-    struct Content: Hashable {
+    struct Content: Hashable, Sendable {
         public let elements: Elements
         public let numbers: Numbers
         
diff --git a/Sources/SwiftDevRant/Models/Profile.swift b/Sources/SwiftDevRant/Models/Profile.swift
index 43973ca..3d7c728 100644
--- a/Sources/SwiftDevRant/Models/Profile.swift
+++ b/Sources/SwiftDevRant/Models/Profile.swift
@@ -1,7 +1,7 @@
 import Foundation
 
 /// Holds information, content and the activity history of a user.
-public struct Profile: Hashable {
+public struct Profile: Hashable, Sendable {
     /// The user's alias.
     public let username: String
     
@@ -39,7 +39,7 @@ public struct Profile: Hashable {
     public let devRantSupporter: Bool
     
     /// True if the logged in user is subscribed to the user of this profile.
-    public let subscribed: Bool //TODO: where is this set? It's not in the json data of the profile
+    public var subscribed: Bool //TODO: where is this set? It's not in the json data of the profile
     
     public init(username: String, score: Int, created: Date, about: String?, location: String?, skills: String?, github: String?, website: String?, content: Profile.Content, avatarLarge: User.Avatar, avatarSmall: User.Avatar, devRantSupporter: Bool, subscribed: Bool) {
         self.username = username
@@ -59,7 +59,7 @@ public struct Profile: Hashable {
 }
 
 public extension Profile {
-    enum ContentType: String {
+    enum ContentType: String, Sendable {
         /// All user content.
         case all = "all"
         
diff --git a/Sources/SwiftDevRant/Models/Rant.Kind.swift b/Sources/SwiftDevRant/Models/Rant.Kind.swift
index 36ef6fe..15757c2 100644
--- a/Sources/SwiftDevRant/Models/Rant.Kind.swift
+++ b/Sources/SwiftDevRant/Models/Rant.Kind.swift
@@ -1,5 +1,5 @@
 public extension Rant {
-    public enum Kind: Int {
+    public enum Kind: Int, Sendable {
         case rant = 1
         case collaboration = 2
         case meme = 3
diff --git a/Sources/SwiftDevRant/Models/Rant.Weekly.swift b/Sources/SwiftDevRant/Models/Rant.Weekly.swift
index 5c2a55f..c763cb0 100644
--- a/Sources/SwiftDevRant/Models/Rant.Weekly.swift
+++ b/Sources/SwiftDevRant/Models/Rant.Weekly.swift
@@ -1,6 +1,6 @@
 public extension Rant {
     /// Holds information about a specific weekly group rant.
-    struct Weekly: Hashable {
+    struct Weekly: Hashable, Sendable {
         public let week: Int
         public let topic: String
         public let date: String
diff --git a/Sources/SwiftDevRant/Models/Rant.swift b/Sources/SwiftDevRant/Models/Rant.swift
index 3c14323..51a5007 100644
--- a/Sources/SwiftDevRant/Models/Rant.swift
+++ b/Sources/SwiftDevRant/Models/Rant.swift
@@ -1,6 +1,6 @@
 import Foundation
 
-public struct Rant: Identifiable, Hashable {
+public struct Rant: Identifiable, Hashable, Sendable {
     /// The id of this rant.
     public let id: Int
     
@@ -23,7 +23,7 @@ public struct Rant: Identifiable, Hashable {
     public let isEdited: Bool
     
     /// True if this rant has been marked as a favorite by the logged in user.
-    public let isFavorite: Bool
+    public var isFavorite: Bool
     
     /// The text contents of this rant.
     public let text: String
diff --git a/Sources/SwiftDevRant/Models/RantFeed.News.swift b/Sources/SwiftDevRant/Models/RantFeed.News.swift
index 29de217..7136956 100644
--- a/Sources/SwiftDevRant/Models/RantFeed.News.swift
+++ b/Sources/SwiftDevRant/Models/RantFeed.News.swift
@@ -1,8 +1,8 @@
 public extension RantFeed {
     /// Contains information about news given in rant feeds.
     /// - note: This is mostly used for weekly group rants.
-    struct News: Hashable, Identifiable {
-        public enum Action: String {
+    struct News: Hashable, Identifiable, Sendable {
+        public enum Action: String, Sendable {
             case groupRant = "grouprant"
             case none = "none"
             case rant = "rant"
diff --git a/Sources/SwiftDevRant/Models/RantFeed.swift b/Sources/SwiftDevRant/Models/RantFeed.swift
index 2376cd2..211c57e 100644
--- a/Sources/SwiftDevRant/Models/RantFeed.swift
+++ b/Sources/SwiftDevRant/Models/RantFeed.swift
@@ -1,5 +1,5 @@
 /// Contains the list of rants for the logged in user and other random things.
-public struct RantFeed: Hashable {
+public struct RantFeed: Hashable, Sendable {
     public let rants: [Rant]
     
     public let sessionHash: String?
@@ -25,7 +25,7 @@ public struct RantFeed: Hashable {
 }
 
 public extension RantFeed {
-    enum Sort {
+    enum Sort: Sendable {
         /// The devRant algorithm decides what rants appear in the feed.
         case algorithm
         
@@ -36,7 +36,7 @@ public extension RantFeed {
         case top(range: Range)
     }
     
-    enum Range {
+    enum Range: Sendable {
         /// Rants from the one day.
         case day
         
diff --git a/Sources/SwiftDevRant/Models/User.Avatar.swift b/Sources/SwiftDevRant/Models/User.Avatar.swift
index 8349165..74e2292 100644
--- a/Sources/SwiftDevRant/Models/User.Avatar.swift
+++ b/Sources/SwiftDevRant/Models/User.Avatar.swift
@@ -1,11 +1,13 @@
+import Foundation
+
 public extension User {
-    struct Avatar: Hashable {
+    struct Avatar: Hashable, Sendable {
         public let colorHex: String
         
         public let imageUrlPath: String?
         
-        public var imageUrl: String? {
-            imageUrlPath.flatMap { "https://avatars.devrant.com/\($0)" }
+        public var imageUrl: URL? {
+            imageUrlPath.flatMap { URL(string: "https://avatars.devrant.com/\($0)") }
         }
         
         public init(colorHex: String, imageUrlPath: String?) {
diff --git a/Sources/SwiftDevRant/Models/User.swift b/Sources/SwiftDevRant/Models/User.swift
index a6344f8..6cec0d7 100644
--- a/Sources/SwiftDevRant/Models/User.swift
+++ b/Sources/SwiftDevRant/Models/User.swift
@@ -1,5 +1,5 @@
 /// Represents a user.
-public struct User: Identifiable, Hashable {
+public struct User: Identifiable, Hashable, Sendable {
     public let id: Int
     
     public let name: String
diff --git a/Sources/SwiftDevRant/Models/VoteState.swift b/Sources/SwiftDevRant/Models/VoteState.swift
index 829c5a1..7db1ea9 100644
--- a/Sources/SwiftDevRant/Models/VoteState.swift
+++ b/Sources/SwiftDevRant/Models/VoteState.swift
@@ -1,5 +1,5 @@
 /// Represents the different kinds of votes that a rant or comment can have.
-public enum VoteState: Int, Hashable {
+public enum VoteState: Int, Hashable, Sendable {
     /// A given ++ vote.
     case upvoted = 1
     
diff --git a/Sources/SwiftDevRant/Models/Weekly.swift b/Sources/SwiftDevRant/Models/Weekly.swift
index aed2b63..82f3347 100644
--- a/Sources/SwiftDevRant/Models/Weekly.swift
+++ b/Sources/SwiftDevRant/Models/Weekly.swift
@@ -1,5 +1,5 @@
 /// The weekly item data for the list of weeklies.
-public struct Weekly: Hashable, Identifiable {
+public struct Weekly: Hashable, Identifiable, Sendable {
     /// The number of the week. The first week starts with 1.
     public let week: Int
     
diff --git a/Sources/SwiftDevRant/SwiftDevRant.swift b/Sources/SwiftDevRant/SwiftDevRant.swift
index 3268838..ee95c20 100644
--- a/Sources/SwiftDevRant/SwiftDevRant.swift
+++ b/Sources/SwiftDevRant/SwiftDevRant.swift
@@ -1,7 +1,7 @@
 import Foundation
 import KreeRequest
 
-public struct SwiftDevRant {
+public struct SwiftDevRant { //TODO: rename to something else to not collide with the module name
     let request: KreeRequest
     let backend = DevRantBackend()