# App for Slack: FAQs ### **Does the preview image update automatically?** No, Slack does not allow us to automatically update the preview image. Plus will show you the latest version at the time the message was sent. In public channels, you can click on **Resend latest version** which will fetch the latest version of the Snapshot or Page and send a new message in the same channel. You can also set up a [recurring subscription](/other/live-snapshots/snapshot-integrations/app-for-slack.md#slack-subscription) for Snapshots. ### **What types of Plus links will generate previews?** The Plus app looks for URLs of Snapshots and Pages where the link sharing permission is set to "Anyone with the link can see this." If share link is not enabled, you will receive a message in Slack that prompts you to update the permission setting. ### **Who sees the preview images?** Anyone in your workspace will see the preview images, even if they don't have a Plus account. In order to access other options (like refreshing the Snapshot in Plus or creating a subscription), they will need to install the app and connect their Plus account. ### What can I create a subscription for? Currently, you can create subscriptions for Snapshots in public channels. If you'd like to create a subscription for a Page or set up a subscription in private channels or DMs, [let us know](/help/contact-us.md). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://guide.plusai.com/other/live-snapshots/snapshot-integrations/app-for-slack/app-for-slack-faqs.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.