Billing for Monthly Tracked Users

This guide will help you understand Mixpanel's Monthly Tracked User (MTU) billing system.

What is an MTU?

Monthly Tracked User (MTU) is a way to calculate your billing based on the number of visitors that perform a qualifying event each month, rather than individual user profiles or events.

There are three MTU billing plans to choose from: Starter (our Free plan), Growth, and Enterprise. Refer to our pricing page for more information on the restrictions and benefits of each plan.

MTUs are not User Profiles

The number of MTUs in your project will not match the number of User profiles in Explore.

Monthly Tracked Users Calculation

A MTU is a visitor that tracks at least one qualifying event within your projects within the calendar month, independent of whether they have a user profile in Explore. Mixpanel determines unique users using the distinct_id. Users are only counted once per month, even if they perform multiple actions across devices.

An organization is charged based on the total number of MTUs across all projects. This means that if a user performs a qualifying event in multiple projects, they are counted once per project.

Guardrail

In most cases, the tally of MTUs is equal to the number of distinct_ids who have performed a tracked event this month. The only exception to this rule is if your users average more than 1000 events each, in which case MTUs are equal to:

Total number of events / 1000

This is a rare threshold to exceed, but you can customize an Insights report to confirm your average user triggers fewer than 1000 events per month. 

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Excluded events

Certain events and API updates are non-qualifying and excluded from the calculation:

  • $identify
  • $create_alias
  • $merge
  • Message Sent ($campaign_delivery)
  • Message Bounced ($campaign_bounced)
  • Message Marked Spam ($campaign_marked_spam)
  • Message Suppressed ($message_suppressed)
  • Message Unsubscribed ($unsubscribe)
  • Campaign Entered ($journey_entered)
  • Updates to user profiles

While Mixpanel events generated by messages do not count toward your total MTU calculation, Message Open events do count towards MTU.

Estimate MTU Usage 

If you haven't implemented tracking yet, you can estimate your current MTU usage by looking at your Monthly Active User (MAU) count. Your MTU and MAU counts should be similar, provided they account for anonymous visitors identically. 

View MTU Usage

MTU calculations including anonymous visitors. This means users who only visit your homepage can still count towards MTU calculations. 

If you are currently tracking data, you can see your MTU consumption in your Organization Settings.

Click on your name in the upper right corner of Mixpanel, and select your organization name under ORGANIZATION SETTINGS.

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From here, billing owners and billing admins can see the current MTU tally for the organization by clicking on Data Usage Details.

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This will show you a graph of your MTU usage over time, as well as a chart of the number of MTUs in each project of your organization, broken down by month, for the last 12 months. This feature is accessible by organization and billing admins and can be downloaded to a CSV file.

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What caused an unexpected spike in my MTU count?

Typically, MTU counts increase when you have an increase in users in your app. Occasionally, large update to your product or a marketing campaign can lead to an increase in tracked users due to an influx of anonymous visitors.

Adding tracking to new parts of your product may increase tracked users if you weren't tracking this specific group of users before. A ramp-up in the number of interactions you have with your users outside your app (emails, help desk, push notifications, etc) is another possible factor. 

There are also some scenarios in which MTU numbers may be higher than expected because a new anonymous user or distinct_id may be generated for a single user. This can happen if:

  • the user visits the website from a different browser - each browser generates a different anonymousId
  • mixpanel.reset() was called
  • the user visits the page incognito
  • the user clears their cookies
  • If the user goes from one page to another, and each page has a different domain - in this case the second page will have a different anonymousId by default

To mitigate “false-uniques” caused by the factors above, enable ID merge to automatically merge pre and post authenticated event streams under a single identifier and reduce MTU volume. This will ensure the most accurate conversion and drop-off rates in funnels and flows (provided the user eventually authenticates).

If you suspect there is an implementation error causing your MTU number to rise contact us immediately. We are happy to help you resolve the issue.

What are the top events contributing to my MTU count?

To view the top events contributing towards your MTU count, create a monthly Insights report using the following filters, or view this public example.

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To estimate your MTU count if you stopped tracking a specific event, create an Insights report using the following filters, or view this public example.

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À La Carte Data Rate Alerts

Organization owners and billing admins are sent an alert email if their account reaches the following percentages of their plan volume: 85%, 100%, 110%, 120%, 200%, 300%, 400%. It is possible to receive multiple alerts in a month if an account reaches two or more of the thresholds mentioned above. Email addresses that are CC'd on receipts will also be CC'd on à la carte data rate alerts.

If the billing owner logs into Mixpanel, they will see a popup if their account reaches the following percentages of their plan volume: 100%, 110% and 120%.

If you go over your prepaid amount, Mixpanel won't stop collecting your data. Once you've finished using your prepaid amount of MTUs you'll be charged the à la carte rate for each additional user tracked that month.

Why should I move from a People/Engagement plan to MTU?

There are many reasons to switch from your current People or Engagement plan to an MTU billing plan.

MTU Plans Scale with your Growth

This means that as you acquire more active users in your product, your MTU volume increases, allowing your Mixpanel costs to match your product’s use.

No More Deleting Inactive Profiles

With the current people profile plan, you are charged per profile, meaning that inactive users are still counted toward your billing. With MTU billing, you are only billed for the users actively using your product.

Access to More Features

Non-Enterprise customers get access to more features than on their original plan. This includes:

  • Cohorts
  • Flows
  • Unlimited custom events
  • Email dashboard digests
  • CSV download
  • Custom alerts
  • Unlimited seats 
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