Facebook Auto Reply V.2.0.1 (SAAS Ready)
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Demo URL: https://fbautoreply.digitaloases.com/
User: admin@admin.com
Password: secret123
Demo Facebook Page: https://www.facebook.com/AutoReplyBulkPMSender
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They are really awesome with the support, they quickly respond and help you solve any issue you get stuck with!! I suggest you go for it; they also have clean code written.