Used Jenkins for building Android and iOS apps, and send out a formatted email with Git Log with the build attached to all the testers. Then when Gmail stopped allowing APK attachments, we used to push the APKs to either S3 or a local machine and serve using a simple Python HTTP server, and send out the link to testers.
Jenkins allowed to pass parameters every time I build it.
Later moved to GitLab CI/CD, and I manually download the artifacts and upload it in Google Drive and send email to testers.
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