Thanks Sebastien, I have logged a jira for this requirement. https://issues.jboss.org/browse/AGPUSH-1487 From: Sebastien Blanc [mailto:scm.blanc@gmail.com] Sent: Tuesday, July 28, 2015 8:08 PM To: Vivek Pandey; AeroGear Developer Mailing List Subject: Re: [aerogear-dev] UPS: Adding collapse_key to push messages Hi Vivek, We don't support that right now but looks like it could be useful ;) Could you please open a JIRA for this and we with make sure to plan this in a next release ? Sebi On Tue, Jul 28, 2015 at 8:36 AM, Vivek Pandey <vivek.pandey(a)pinelabs.com&gt; wrote: Hello UPS Team, Is there a way to inject “collapse_key” attribute in GCM push messages? We are using REST endpoint for sending push notifications. Vivek _____ This message may contain privileged and confidential information and is solely for the use of intended recipient. The views expressed in this email are those of the sender and not of Pine Labs. The recipient should check this email and attachments for the presence of viruses / malwares etc. Pine Labs accepts no liability for any damage caused by any virus transmitted by this email. Pine Labs may monitor and record all emails. _____ _______________________________________________ aerogear-dev mailing list aerogear-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/aerogear-dev This message may contain privileged and confidential information and is solely for the use of intended recipient. The views expressed in this email are those of the sender and not of Pine Labs. The recipient should check this email and attachments for the presence of viruses / malwares etc. Pine Labs accepts no liability for any damage caused by any virus transmitted by this email. Pine Labs may monitor and record all emails.