That sounds extremely similar to wechat appart from the opt-in being managed in wechat itself. A lot of other limitations exist on wechat to limit brand creeps,

That sounds extremely similar to wechat appart from the opt-in being managed in wechat itself. A lot of other limitations exist on wechat to limit brand creeps, limit number of push messages a day, pack brand accounts under a dedicated simili user fold and more. If you guys are curious about a platform with good private / branding integration as to brands creeping in your private circles .