--- "@context": https://schema.org "@type": TechArticle "@id": https://www.twilio.com/docs/segment/guides/usage-and-billing/twilio-developer-plan#article headline: Twilio Developer Plan url: https://www.twilio.com/docs/segment/guides/usage-and-billing/twilio-developer-plan inLanguage: en dateModified: 2025-12-02T07:06:21.000Z author: "@type": Organization name: Twilio Developer Education Team publisher: "@type": Organization name: Twilio --- # Twilio Developer Plan The Twilio Developer Plan allows you to collect and process your data at scale, consolidating your data from up to 3 sources into a single warehouse for complex querying. ## How's this offer different from Segment's Free Plan? The Twilio Developer Plan allows for 10,000 Monthly Tracked Users (MTUs), while Segment's Free Plan limits MTUs to 1,000. The Twilio Developer Plan is limited to 1 warehouse destination, while all other Segment plans also allow you to send data in real time to more than 300 destinations (all the analytics, marketing, advertising, and A/B testing tools you already use). | Resource | Twilio Developer Plan | Segment Free Plan | | ---------------------------- | --------------------- | ------------------------------------------------------------------------------------------------------------------ | | Monthly Tracked Users (MTUs) | 10,000 | 1,000 | | Destinations | 1 warehouse | More than 400 destinations, including the analytics, marketing, advertising, and A/B testing tools you already use | Need more destinations or more MTUs? Upgrade to the [Team Plan](https://segment.com/pricing) for unlimited destinations and scaled MTU pricing. ## How do I qualify for the Twilio Developer Plan? You must have an active Twilio account to sign up for the Twilio Developer Plan. Active Twilio users can sign up for the Twilio Developer Plan [on Segment's website](https://www.segment.com/twilio-developer-plan). ## What is a data source? In Segment, you create a source for each website, app, or cloud-based tool that you need to collect data from. For more information about data sources, see the [Sources Overview](/docs/segment/connections/sources/). ## Warehouse destinations A warehouse is a central repository of data collected from one or more sources. This is what commonly comes to mind when you think about a relational database: structured data that fits into rows and columns. Some examples of data warehouses that are available on Segment are [PostgresSQL](/docs/segment/connections/storage/catalog/postgres/), [Snowflake](/docs/segment/connections/storage/catalog/snowflake/), [BigQuery](/docs/segment/connections/storage/catalog/bigquery/), and [Redshift](/docs/segment/connections/storage/catalog/redshift/). For more information about warehouses, see the [Data Storage Overview](/docs/segment/connections/storage/). ## How are Monthly Tracked Users (MTUs) calculated? Segment counts the number of **unique** `userId` values, and then adds the number of **unique** `anonymousId` values that were not associated with a `userId` during the billing period. Segment counts these IDs across all calls made from all sources in your workspace, over a billing month. Segment counts each user once per month, even if they perform more than one action or are active across more than one source. For more information about Monthly Tracked Users, see [What is an MTU?](/docs/segment/guides/usage-and-billing/mtus-and-throughput/#what-is-an-mtu). ## What happens if I exceed the 10,000 MTU limit? If you exceed the 10,000 MTU limit once in a 6-month period, Segment locks access to your account, but data still flows through Segment. To unlock your account, you can choose from these options: * **Option 1**: Wait for a full billing cycle (1 month) to go by without any overages. Segment unlocks your account if the MTU numbers reduce on their own. * **Option 2**: Upgrade to the [Team plan](https://segment.com/pricing/). This starts a 2-week free trial that gives you 14 days to fix your implementation to decrease the traffic. * **Option 3:** Upgrade to a [Business plan](https://segment.com/pricing/). Business plans are custom built for customers and typically have higher MTU limits than Team plans. [Schedule time with a Segment representative](https://segment.com/demo) to see if a Business plan is a good fit for you. If you exceed the 10,000 MTU limit twice in a 6-month period, Segment locks access to your account and also stops sending and receiving data. You can unlock your account by following option 2 or 3 above to upgrade your plan. ## How do I get more out of Segment? Segment helps you simplify data collection, personalize user interactions, protect data integrity, and respect user privacy. Explore the [Destinations Catalog](/docs/segment/connections/destinations/catalog/) to see all the tools you can send data to once you get data into Segment. On Business plans, Segment also offers two add-on products called [Protocols](/docs/segment/protocols/) and [Engage](/docs/segment/engage/). * **Protocols** helps you automate and scale the [data quality best practices](/docs/segment/protocols/tracking-plan/best-practices/) to improve data quality and trust across your company. * **Engage** is a powerful personalization platform that enables you to create unified customer profiles in Segment, to build and enrich audiences, and to activate audiences across marketing tools.