Is there a max notification payload size? Pushy Support May 21, 2020 21:36 Updated Yes. The notification data payload for the Send Notifications API is limited to 4kb in stringified JSON maximum string length. Get in touch with us if you need to send more than 4kb. Related articles Where are the Pushy Pro servers hosted? Is Pushy GDPR-compliant? Is there a status page? What are pending notifications? What is MQTT? Comments 0 comments Please sign in to leave a comment.