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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello UPS Team,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there a way to inject “collapse_key” attribute in GCM push messages?<o:p></o:p></p><p class=MsoNormal>We are using REST endpoint for sending push notifications.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Vivek<o:p></o:p></p></div>
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