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Description
Is your feature request related to a problem? Please describe.
Currently, admins can only filter by message delivery status and error codes within campaign exports. This means that in order to text all contacts who were sent an event link but didn't receive it, for example, an admin can either export, isolate undelivered, reupload, and retext a set of contacts on a new campaign, or pan Message Review for messages with carrier rejection messages.
Describe the solution you'd like
A filter for Message Delivery Status and Error Codes should be added to the Message Filter block of Message Review
Describe alternatives you've considered
An "Export Undelivered/Rejected" button could be added to the Campaign page instead.