Push
Web, Android and iOS notifications, without a separate vendor or a separate bill.
Segments you build here
App users are grouped into segments in the same console that sends to them.
Plain reporting
Sent, held back and failed, for each campaign.
Keys you can lock down
Each API key can be limited to named domains.
One platform, not a stack of subscriptions
Push shares its customers, domains, team and bill with everything else here. Nothing is re-entered, and turning it on does not mean another login for anybody.