diff --git a/src/client.ts b/src/client.ts
index e7651c9..5de0ae2 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -247,6 +247,33 @@ export class SDKSignerClient {
 
     return response;
   }
+
+  async getPhoneNumberForEmail(email: string): Promise<string | null> {
+    const processesData = await this.getOwnedProcesses();
+    console.log(processesData);
+    
+    // Type guard to ensure data exists and is an object
+    if (!processesData.data || typeof processesData.data !== 'object' || processesData.data === null) {
+      return null;
+    }
+    
+    for (const [processId, processData] of Object.entries(processesData.data)) {
+      // Type guard to ensure processData is an object with expected properties
+      if (
+        processData && 
+        typeof processData === 'object' && 
+        'email' in processData && 
+        'phoneNumber' in processData &&
+        typeof processData.email === 'string' &&
+        typeof processData.phoneNumber === 'string' &&
+        processData.email === email
+      ) {
+        return processData.phoneNumber;
+      }
+    }
+    return null;
+  }
+
   async createProcess(processData: { [label: string]: any }, privateFields: string[], roles: any): Promise<ServerResponse> {
     const message: ClientMessage = {
       type: MessageType.CREATE_PROCESS,