How can offline marketing channels like direct mail be tracked alongside digital channels in a unified call tracking system?
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A
By asking all direct mail recipients to fill out an online form before calling
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B
By printing unique static tracking numbers on each offline asset (mailer, flyer, billboard) and routing calls to the same platform
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C
By requiring callers from direct mail to dial an extension number
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D
Offline channels cannot be integrated into digital call tracking platforms