Talk to us.

C Sort is built and run by card sellers — the same app lists our own store's inventory every day. Every message is read by a person who actually does this.

Email

[email protected]

For preorder or billing questions, include the email address you signed in with — that's how your subscription is attached, so it's how we find you.

Before you write

The FAQ answers the common ones — what C Sort does, where your data lives, what hardware you need, and how billing works.

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