diff --git a/src/controllers/api/addToGuildController.ts b/src/controllers/api/addToGuildController.ts
new file mode 100644
index 00000000..3c95085c
--- /dev/null
+++ b/src/controllers/api/addToGuildController.ts
@@ -0,0 +1,75 @@
+import { Guild, GuildMember } from "@/src/models/guildModel";
+import { Account } from "@/src/models/loginModel";
+import { fillInInventoryDataForGuildMember } from "@/src/services/guildService";
+import { createMessage } from "@/src/services/inboxService";
+import { getInventory } from "@/src/services/inventoryService";
+import { getAccountForRequest, getSuffixedName } from "@/src/services/loginService";
+import { IOid } from "@/src/types/commonTypes";
+import { IGuildMemberClient } from "@/src/types/guildTypes";
+import { RequestHandler } from "express";
+import { ExportFlavour } from "warframe-public-export-plus";
+
+export const addToGuildController: RequestHandler = async (req, res) => {
+    const payload = JSON.parse(String(req.body)) as IAddToGuildRequest;
+
+    const account = await Account.findOne({ DisplayName: payload.UserName });
+    if (!account) {
+        res.status(400).json("Username does not exist");
+        return;
+    }
+
+    const guild = (await Guild.findOne({ _id: payload.GuildId.$oid }, "Name"))!;
+    // TODO: Check sender is allowed to send invites for this guild.
+
+    if (
+        await GuildMember.exists({
+            accountId: account._id,
+            guildId: payload.GuildId.$oid
+        })
+    ) {
+        res.status(400).json("User already invited to clan");
+        return;
+    }
+
+    await GuildMember.insertOne({
+        accountId: account._id,
+        guildId: payload.GuildId.$oid,
+        status: 2 // outgoing invite
+    });
+
+    const senderAccount = await getAccountForRequest(req);
+    const senderInventory = await getInventory(senderAccount._id.toString(), "ActiveAvatarImageType");
+    await createMessage(account._id.toString(), [
+        {
+            sndr: getSuffixedName(senderAccount),
+            msg: "/Lotus/Language/Menu/Mailbox_ClanInvite_Body",
+            arg: [
+                {
+                    Key: "clan",
+                    Tag: guild.Name + "#000"
+                }
+            ],
+            sub: "/Lotus/Language/Menu/Mailbox_ClanInvite_Title",
+            icon: ExportFlavour[senderInventory.ActiveAvatarImageType].icon,
+            contextInfo: payload.GuildId.$oid,
+            highPriority: true,
+            acceptAction: "GUILD_INVITE",
+            declineAction: "GUILD_INVITE",
+            hasAccountAction: true
+        }
+    ]);
+
+    const member: IGuildMemberClient = {
+        _id: { $oid: account._id.toString() },
+        DisplayName: account.DisplayName,
+        Rank: 7,
+        Status: 2
+    };
+    await fillInInventoryDataForGuildMember(member);
+    res.json({ NewMember: member });
+};
+
+interface IAddToGuildRequest {
+    UserName: string;
+    GuildId: IOid;
+}
diff --git a/src/models/inboxModel.ts b/src/models/inboxModel.ts
index 10b1930e..c451d18a 100644
--- a/src/models/inboxModel.ts
+++ b/src/models/inboxModel.ts
@@ -32,6 +32,10 @@ export interface IMessage {
     transmission?: string;
     arg?: Arg[];
     r?: boolean;
+    contextInfo?: string;
+    acceptAction?: string;
+    declineAction?: string;
+    hasAccountAction?: boolean;
 }
 
 export interface Arg {
@@ -100,7 +104,11 @@ const messageSchema = new Schema<IMessageDatabase>(
                 }
             ],
             default: undefined
-        }
+        },
+        contextInfo: String,
+        acceptAction: String,
+        declineAction: String,
+        hasAccountAction: Boolean
     },
     { timestamps: { createdAt: "date", updatedAt: false }, id: false }
 );
diff --git a/src/models/inventoryModels/inventoryModel.ts b/src/models/inventoryModels/inventoryModel.ts
index 280934b8..f8cf68f2 100644
--- a/src/models/inventoryModels/inventoryModel.ts
+++ b/src/models/inventoryModels/inventoryModel.ts
@@ -1249,7 +1249,7 @@ const inventorySchema = new Schema<IInventoryDatabase, InventoryDocumentProps>(
         Drones: [droneSchema],
 
         //Active profile ico
-        ActiveAvatarImageType: String,
+        ActiveAvatarImageType: { type: String, default: "/Lotus/Types/StoreItems/AvatarImages/AvatarImageDefault" },
 
         // open location store like EidolonPlainsDiscoverable or OrbVallisCaveDiscoverable
         DiscoveredMarkers: [Schema.Types.Mixed],
diff --git a/src/routes/api.ts b/src/routes/api.ts
index 0a5e23fe..67e783e1 100644
--- a/src/routes/api.ts
+++ b/src/routes/api.ts
@@ -4,6 +4,7 @@ import { abortDojoComponentController } from "@/src/controllers/api/abortDojoCom
 import { abortDojoComponentDestructionController } from "@/src/controllers/api/abortDojoComponentDestructionController";
 import { activateRandomModController } from "@/src/controllers/api/activateRandomModController";
 import { addFriendImageController } from "@/src/controllers/api/addFriendImageController";
+import { addToGuildController } from "@/src/controllers/api/addToGuildController";
 import { arcaneCommonController } from "@/src/controllers/api/arcaneCommonController";
 import { archonFusionController } from "@/src/controllers/api/archonFusionController";
 import { artifactsController } from "@/src/controllers/api/artifactsController";
@@ -150,6 +151,7 @@ apiRouter.get("/updateSession.php", updateSessionGetController);
 apiRouter.post("/abortDojoComponent.php", abortDojoComponentController);
 apiRouter.post("/activateRandomMod.php", activateRandomModController);
 apiRouter.post("/addFriendImage.php", addFriendImageController);
+apiRouter.post("/addToGuild.php", addToGuildController);
 apiRouter.post("/arcaneCommon.php", arcaneCommonController);
 apiRouter.post("/archonFusion.php", archonFusionController);
 apiRouter.post("/artifacts.php", artifactsController);