Pull Request Analytics provides a notification reminder type which allows you to get informed about pull requests which you haven’t reviewed yet.
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Going to Bitbucket Manage Account → PR Analytics:
Clicking on 'New notificationreminder'
Selecting your slack team, and ‘Review reminder’ as the notification reminder type
And finishing by clicking: 'Add'
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Then, you will get reminded about pull requests you haven’t reviewed yet every day in Slack.
Besides the scheduled notificationreminder, there is also an included Slack command to receive a personalized list of pull requests to review: /pra review
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