Subprocessors

These providers may process data on our behalf. They act on our instructions, and message content reaches them only as ciphertext.

Current as of 2026-08-31.

Provider	Purpose
Amazon Web Services	Servers, databases, object storage and message queues.
Google Cloud	Databases, message queues and Android push delivery.
Cloudflare	DNS, content delivery, edge routing and call relay.
Amazon Simple Email Service	Delivery of registration and sign-in verification codes.
Apple	Push notification delivery and App Store payment processing.

We update this list when it changes. If you would like to be told in advance, write to us and ask. xiaosan9288@gmail.com