diff --git a/.changeset/cuddly-cats-retire.md b/.changeset/cuddly-cats-retire.md
new file mode 100644
index 000000000..ef17a074d
--- /dev/null
+++ b/.changeset/cuddly-cats-retire.md
@@ -0,0 +1,5 @@
+---
+"active-campaign-client": minor
+---
+
+Add resync user handler
diff --git a/packages/active-campaign-client/src/handlers/resyncUserHandler.ts b/packages/active-campaign-client/src/handlers/resyncUserHandler.ts
new file mode 100644
index 000000000..a9edc97d5
--- /dev/null
+++ b/packages/active-campaign-client/src/handlers/resyncUserHandler.ts
@@ -0,0 +1,82 @@
+import { deleteContact } from '../helpers/deleteContact';
+import { getUserFromCognitoUsername } from '../helpers/getUserFromCognito';
+import { getSubscribedWebinars } from '../helpers/getSubscribedWebinars';
+import { addContact } from '../helpers/addContact';
+import { APIGatewayProxyResult, SQSEvent } from 'aws-lambda';
+import { addContactToList } from '../helpers/manageListSubscription';
+import { queueEventParser } from '../helpers/queueEventParser';
+
+export async function resyncUserHandler(event: {
+  readonly Records: SQSEvent['Records'];
+}): Promise<APIGatewayProxyResult> {
+  try {
+    const queueEvent = queueEventParser(event);
+    const cognitoUsername = queueEvent.detail.additionalEventData.sub;
+    const deletionResult = await deleteContact(cognitoUsername);
+    if (
+      deletionResult.statusCode !== 200 &&
+      deletionResult.statusCode !== 404
+    ) {
+      // eslint-disable-next-line functional/no-throw-statements
+      throw new Error('Error adding contact');
+    }
+
+    const user = await getUserFromCognitoUsername(cognitoUsername);
+
+    if (!user) {
+      console.log(
+        `User: ${cognitoUsername} not present on Cognito, sync done.`
+      );
+      return {
+        statusCode: 200,
+        body: JSON.stringify({
+          message: 'User not present on Cognito, sync done.',
+        }),
+      };
+    }
+
+    const userWebinarsSubscriptions = await getSubscribedWebinars(
+      cognitoUsername
+    );
+
+    const webinarIds = JSON.parse(userWebinarsSubscriptions.body)
+      .map(
+        (webinar: { readonly webinarId: { readonly S: string } }) =>
+          webinar?.webinarId?.S
+      )
+      .filter(Boolean);
+
+    const res = await addContact(user);
+    if (res.statusCode !== 200) {
+      // eslint-disable-next-line functional/no-throw-statements
+      throw new Error('Error adding contact');
+    }
+
+    await webinarIds.reduce(
+      async (
+        prevPromise: Promise<APIGatewayProxyResult>,
+        webinarId: string
+      ) => {
+        await prevPromise;
+        try {
+          const result = await addContactToList(cognitoUsername, webinarId);
+          console.log('Add contact to list result:', result, webinarId); // TODO: Remove after testing
+          await new Promise((resolve) => setTimeout(resolve, 1000)); // wait 1 sec to avoid rate limiting
+        } catch (e) {
+          console.error('Error adding contact to list', e); // TODO: Remove after testing
+        }
+      },
+      Promise.resolve()
+    );
+
+    return {
+      statusCode: 200,
+      body: JSON.stringify({ message: 'User resynced' }),
+    };
+  } catch (error) {
+    return {
+      statusCode: 500,
+      body: JSON.stringify({ message: error }),
+    };
+  }
+}
diff --git a/packages/active-campaign-client/src/helpers/getSubscribedWebinars.ts b/packages/active-campaign-client/src/helpers/getSubscribedWebinars.ts
new file mode 100644
index 000000000..1d6d75738
--- /dev/null
+++ b/packages/active-campaign-client/src/helpers/getSubscribedWebinars.ts
@@ -0,0 +1,30 @@
+import { DynamoDBClient, QueryCommand } from '@aws-sdk/client-dynamodb';
+import { APIGatewayProxyResult } from 'aws-lambda';
+
+export async function getSubscribedWebinars(
+  username: string
+): Promise<APIGatewayProxyResult> {
+  try {
+    const dynamoClient = new DynamoDBClient({ region: process.env.AWS_REGION });
+    const command = new QueryCommand({
+      TableName: process.env.DYNAMO_WEBINARS_TABLE_NAME,
+      KeyConditionExpression: 'username = :username',
+      ExpressionAttributeValues: {
+        ':username': { S: username },
+      },
+    });
+
+    const response = await dynamoClient.send(command);
+    console.log('getWebinarSubscriptions', response);
+    return {
+      statusCode: 200,
+      body: JSON.stringify(response.Items),
+    };
+  } catch (error) {
+    console.error('Error querying items by username:', error);
+    return {
+      statusCode: 500,
+      body: JSON.stringify({ message: 'Internal server error' }),
+    };
+  }
+}
diff --git a/packages/active-campaign-client/src/helpers/getUserFromCognito.ts b/packages/active-campaign-client/src/helpers/getUserFromCognito.ts
index 41d02e7c7..c3630ad89 100644
--- a/packages/active-campaign-client/src/helpers/getUserFromCognito.ts
+++ b/packages/active-campaign-client/src/helpers/getUserFromCognito.ts
@@ -4,16 +4,22 @@ import { QueueEvent } from '../types/queueEvent';
 import { listUsersCommandOutputToUser } from './listUsersCommandOutputToUser';
 
 export async function getUserFromCognito(queueEvent: QueueEvent) {
+  const username = queueEvent.detail.additionalEventData.sub;
+  const user = await getUserFromCognitoUsername(username);
+  if (!user) {
+    // eslint-disable-next-line functional/no-throw-statements
+    throw new Error('User not found');
+  }
+  return user;
+}
+
+export async function getUserFromCognitoUsername(username: string) {
   const command = new ListUsersCommand({
     UserPoolId: process.env.COGNITO_USER_POOL_ID,
-    Filter: `username = "${queueEvent.detail.additionalEventData.sub}"`,
+    Filter: `username = "${username}"`,
   });
   const listUsersCommandOutput = await cognitoClient.send(command);
   const user = listUsersCommandOutputToUser(listUsersCommandOutput);
-  if (!user) {
-    // eslint-disable-next-line functional/no-throw-statements
-    throw new Error('User not found');
-  }
   console.log('User:', JSON.stringify(user, null, 2)); // TODO: Remove after testing
   return user;
 }
diff --git a/packages/active-campaign-client/src/index.ts b/packages/active-campaign-client/src/index.ts
index 0d1edb3b6..cab74a814 100644
--- a/packages/active-campaign-client/src/index.ts
+++ b/packages/active-campaign-client/src/index.ts
@@ -1,8 +1,15 @@
 import { SQSEvent } from 'aws-lambda';
 import { sqsQueueHandler } from './handlers/sqsQueueHandler';
+import { resyncUserHandler } from './handlers/resyncUserHandler';
 
 export async function sqsQueue(event: {
   readonly Records: SQSEvent['Records'];
 }) {
   return await sqsQueueHandler(event);
 }
+
+export async function resyncQueue(event: {
+  readonly Records: SQSEvent['Records'];
+}) {
+  return await resyncUserHandler(event);
+}