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This allows you to send a letter to those people that haven't already received it, in order that your customers don't receive the same letter more than once. Alternatively it can be used to target those customers that haven't received a particular letter. |
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Avoid sending the same letter twice |
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If we assume that you are about to Mail-Merge a letter called Sales Offer, and you don't want to send it to anyone that has already received it, you would find Sales Offer in the Campaign Filter and choose Has not been sent. |
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Send a follow-up letter |
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If we assume that you are about to Mail-Merge a letter called Upgrade Offer, and you are targetting everyone who has received your Sales Offer letter, you would find Sales Offer in the Campaign Filter and choose Has been sent. Additionally you could choose Has not been sent for the Upgrade Offer letter to avoid mailing the upgrade offer letter to the same people twice. |