Importing your contacts into Reach

Last updated: June 25, 2026

Reach is Maze's tester management tool. You can use it to build and manage a database of testers, create segments, and send targeted campaigns with Mazes.

This article will walk you through how to add contacts to Reach.

Limits

  • Users on the Professional plan (legacy) and the Team plan can add up to 2000 participants.

  • Enterprise plan users can add up to 1 million database participants. Each import file must not exceed 20.000 participants at a time. 

How to add participants to Reach

To add contacts to your Reach database, click the Add participants button.

maze-reach-add-participants.webp

Manually add a participant

Click Manually add to add a one-off participant.

Enter their email and any other details, and click Add participant to save the new participant.

maze-reach-add-participant-manually.webp

Upload a CSV with your contacts

Before you start, you'll need a CSV with your contacts:

  • If you already have your contacts in other systems, such as Google Sheets or Mailchimp, you can export a CSV file from there. Learn more

  • Alternatively, if you don't have the desired list of contacts within a third-party tool yet, you'll need to manually source the emails and other relevant information. Learn more

If you need a sample database with dummy data to test Reach internally, click Download 'Sample.csv' when opening your empty Reach database. You can then import that sample file into Reach.

Once you have your CSV, you can import it into Reach. Here's how you do it:

  1. Log in to your Maze account and ensure you have selected the relevant team.

  2. In the navigation panel on the left side, open the Tester database

    maze-open-reach.webp

  3. Click Add participants.

    maze-empty-reach.webp

  4. Select the file to upload, and click Open.

    Uploading a file

  5. Select which columns in the CSV to import using the checkboxes, and match them with the appropriate Reach field type.

  6. Once you're done, click Review import to see a preview of the imported data.

    Match columns

  7. If everything looks good, click Continue to confirm the submission.

    Confirm import data

  8. You'll be taken back to the database, where you'll see all testers already imported into Maze. Click each entry to open the participant profile. Here you can see more information, edit details, and delete that individual participant. Learn more about editing your Reach database

    maze-reach-overview.webp

After importing your first contacts, you're ready to start building segments and sending out campaigns.

Supported field types during CSV import

Supported field types include:

  • Email

  • Text

  • Numeric

  • Percentage

  • Boolean

  • Date with time

  • Date

Import additional contacts & edit your database

After the initial import, repeat the steps to import a new CSV file to perform the following bulk/mass actions:

  • Add more participants in bulk

  • Add new columns to your database

  • Edit participants in bulk

Learn more about editing your Reach database

Still need help?

If you have any questions or concerns, please let our Support team know — we'll be happy to help!