Objective

This article explains how to efficiently retrieve or export messages in bulk across multiple conversations using the Conversations (Classic) API. It addresses the common need for scalable reporting and data export, especially when querying messages one conversation at a time is not practical.

Product

Conversations Classic

Environment

Twilio Console, Conversations API

User Account Permission/Role(s) Required 

• Access to the Twilio Console and Conversations API
• Sufficient permissions to configure webhooks and access conversation/message data

Procedure 

There is currently no single REST API endpoint to export messages across multiple conversations at once. However, you can achieve scalable reporting and data export using the following best practices:

Real-Time Data Streaming (Recommended for Ongoing Reporting)

1. Set up a webhook for message events:

   • In the Twilio Console or via the API, configure a Service-level webhook to listen for the onMessageAdded event.
   • This webhook will trigger automatically whenever a message is sent in any conversation within your Conversation Service.

2. Ingest webhook payloads into your database:

   • Each webhook event includes details such as ConversationSid, MessageSid, Body, Author, DateCreated, and any custom Attributes.
   • Build a backend process to receive these payloads and write them to your reporting database (e.g., PostgreSQL, Snowflake, BigQuery).

3. Generate reports from your own database:

   • Once messages are stored in your infrastructure, you can run SQL queries to filter by date, participant, or other criteria for instant reporting.

Historical Data Backfill (For Existing Conversations)

1. List all conversations:

   • Use the endpoint:
     GET /v1/Services/{ServiceSid}/Conversations?PageSize=100
   • Retrieve the list of Conversation SIDs you want to export messages from.

2. Fetch messages in parallel:

   • For each Conversation SID, call:
     GET /v1/Conversations/{ConversationSid}/Messages
   • Implement a parallel worker pool (e.g., using Promise.all with concurrency limits in Node.js, or asyncio in Python) to process multiple conversations at once.

3. Respect Twilio rate limits:

   • Limit concurrent API requests (typically 20–30 at a time, depending on your account tier) to avoid HTTP 429 errors.

Additional Information

• The BulkExport API is only for Programmable Messaging logs (SMS/MMS/WhatsApp) and does not support Conversations API data.
• For more details on configuring webhooks, see Conversations Webhooks documentation.
• For API reference, see Conversations API documentation.
• If you need to export large volumes of historical data, consider batching requests and monitoring for rate limiting.