**Summary: **With a proof subscription enabled on a proof level, reviewers can add themselves to the proof. Depending on options selected during proof creation, those reviewers can comment & make decisions.

**Available for: **Starter, Business & Enterprise editions

**How to enable proof subscriptions?**

Proof creators may enable the proof subscription setting while creating a new proof (under the **Proof settings** section).

When the setting is enabled, you may choose which permissions (**comment**, **comment & make decisions**) should be assigned for auto-added reviewers.

The proof owner can also decide to which stage those reviewers should be added:

Reviewers can be added to the **first stage**, **last stage**, or a **new subscriber's stage** (the last option is available just for the **Enterprise **edition).

**How reviewers can subscribe to proofs.**

To let reviewers subscribe to the proof, they have to access it using a public URL that can be copied directly from the Proof Details page within Ziflow.

Proof owners or managers should copy the public URL and then share it with anyone wanting to collaborate on a particular project.

When a reviewer opens a proof using the public URL, they can add comments or submit a decision depending on the proof subscribe setting chosen by the proof creator.

**Ziflow users** have to sign in to add comments or make the decision. Users may **sign in right after they open a proof** or they can **authenticate using their Ziflow credentials** after adding a comment or submitting a decision.

If a public URL is shared with a **guest contact** (reviewer without a Ziflow account), then the reviewer, **after adding a comment or submitting a decision,** is asked to **confirm their name & email address**.

When reviewers auto-subscribe to the proof, they will receive an email notification about being added to that proof.

Auto-subscribed reviewers will also appear under proof details when they're added to the stage selected during proof configuration.

**Additional information:**

Please note that the proof subscriptions feature respects the

**Allow sharing proof****with**setting inside the**General**account settings. This means that Ziflow administrators can decide who exactly can subscribe to proofs with the proof subscription feature.Proof security setting can also limit who can subscribe to the proof. If you select the

**Users only**option, then guest reviewers won't be able to subscribe to such proof.