If you want to distribute your app via Ant, make sure you’re on version 1.9.2 or higher of the Ant tool and run the following command:

ant release crashlytics-upload-distribution

Add these properties for end-to-end distribution:

Release Notes:

-DbetaDistributionReleaseNotes="Release Notes for this build."

or

-DbetaDistributionReleaseNotesFilePath=release_notes.txt

Testers:

-DbetaDistributionEmails="BetaUser@yourcompany.com, BetaUser2@yourcompany.com"

or a comma-separated file of testers - just include their email address:

-DbetaDistributionEmailsFilePath=beta_distribution_emails.txt

For Groups:

-DbetaDistributionGroupAliases="my-best-testers"

or a comma-separated file of the group aliases:

-DbetaDistributionGroupAliasesFilePath=group_aliases.txt