Maze metrics in Reach

Last updated: April 19, 2026

Maze metrics are stats collected from maze tests during the course of your Reach campaigns.

You can use these metrics to understand the behavior of your participants, segment your data, and better retarget testers in future campaigns.

In this article:

Available metrics

Last contacted

This is the date the participant was last sent a campaign via Reach.

You can use this metric to keep track of the most recently contacted testers. This avoids burdening testers with too frequent communications.

Mazes sent

This is the number of individual mazes sent to a participant via Reach campaigns.

You can use this metric to keep track of the most contacted testers. This helps ensure that you’re reaching out more or less uniformly to all testers in the database instead of disproportionally targeting some testers.

Mazes started

This is the total number of mazes the tester started via a Reach campaign.

Mazes completed

This is the total number of mazes the tester completed via a Reach campaign.

Start rate / Response rate

This is the ratio of maze tests started from received Reach campaigns.

A lower start rate may indicate that testers are not engaging with your Reach campaigns. This could mean that your email subject/copy could use some rework, or that emails are not reaching testers for some reason. Learn more about the deliverability and engagement of Reach campaigns

In some cases, you may also want to exclude these inactive testers. Learn more about deleting participants from your Reach database

Completion rate

This is the ratio of maze tests completed from received Reach campaigns.

A lower completion rate means that testers are starting the mazes, but not finishing them. This may indicate an issue with the setup of the test — for instance, if the maze is too long, or if there are problems in conditional logic or the mission setup.

In these cases, it may be worth double-checking your maze for issues, and targeting these users for a follow-up campaign, if needed.

Average time to respond / Response time

This is the average time the tester took to start a maze after receiving a campaign.

Taking less time to start a maze after receiving a campaign email may be an indicator of higher engagement. These testers may be more receptive to testing.

Tester profile

Click the Open button (

icon-open.svg
) next to each tester to view relevant information about their profile and activity metrics.

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maze-reach-tester-profile.webp

Filtering based on metrics

You can use these metrics to create segments that allow you to target specific tester groups more quickly and precisely.

Learn more about filters and segments in Reach

Some examples of segments you could create based on maze metrics:

  • Most responsive testers — e.g. if you want to target testers who are more receptive to testing
    maze-reach-filter-responsive.webp
  • Testers who haven’t been contacted before — e.g. if you want to target first-time testers
    maze-reach-filter-not-contacted.webp
  • Testers who recently had a zero completion rate — e.g. if you need to send a follow-up campaign due to an issue with the original maze
    maze-reach-filter-no-completion.webp
  • Inactive testers — e.g. if you want to exclude testers who aren’t interacting with your mazes
    maze-reach-filter-inactive.webp