Privacy Policy

The short version

Arialine is a Slack app for turning ideas into living, versioned diagrams. It can create, change, or answer about a board when you address Aria, Arialine, or @Arialine; use /arialine or a shortcut; apply a proposal; react with a pushpin to propose a change; or share a supported file while automatic rendering is enabled.

In channels where Arialine is invited, recent discussion text is buffered for up to 24 hours so a later explicit mention such as '@Arialine turn this discussion into a diagram' can include the discussion that came before it. Nothing from this buffer is sent to an AI provider until someone explicitly invokes Arialine. There is no ambient listening feature or per-channel context-disable setting. We do not sell your data or use Slack content to train AI models.

Arialine uses Featurebase for the public Help Center and browser-based live support chat. Featurebase is a customer-communication processor only; it does not decide your Slack permissions, workspace plan, subscription state, or billing authority.

What Arialine accesses in Slack

When you install Arialine, Slack sends us the installing workspace or organization ID and name, the installing user's Slack ID, the app installation details, and the bot access token required to operate the app. The token is stored on our server and is never shown on the website or sent to PostHog or Featurebase.

Slack sends Arialine message events only for channels it has been invited to. Recent channel text is kept in a rolling 24-hour context buffer so a later explicit address to Aria, Arialine, or @Arialine can resolve phrases such as 'this discussion'. The buffer is separate from board history. Nothing in it is sent to an AI provider until an explicit invocation.

For a diagram, we store the board name, workspace and channel IDs, Mermaid source, version history, change summaries, Slack user IDs, timestamps, and links back to the source Slack messages — the record needed to show the board's history and explain why each element exists.

Support and Help Center

Arialine uses Featurebase to host detailed documentation, Help Center search, and the live support Messenger embedded on the Arialine support page.

When you start a support conversation, Featurebase receives the message and any contact information you choose to provide, together with standard technical and visitor identifiers needed to keep the browser conversation available. Arialine does not automatically send your Slack profile, workspace identity, verified account email, or Paddle billing email to Featurebase.

The Contact support shortcut in Slack only opens the browser support page. Support replies remain in the Featurebase Messenger and are not routed through Arialine as Slack DMs.

Website and service analytics

The website uses PostHog to collect page views, the page path, anonymous website identifiers, language changes, Add to Slack clicks, blocked-install events, successful OAuth callbacks marked installed=1, browser errors, and general interaction events captured by the analytics library.

PostHog may also receive standard technical information such as browser and operating system, screen size, URL, and the IP address used to make the request. The website uses Slack sign-in for the account page. Paddle hosts checkout and payer-facing billing services; Arialine never receives card numbers. The browser may keep an anonymous analytics ID in local storage and cookies.

The Slack service sends PostHog operational metrics such as workspace ID, feature used, trigger, response time, success or failure, AI provider and model, fallback position, token counts when a provider reports them, and error type. We do not intentionally put Slack message text or Mermaid source into these analytics events.

How we use the data

We use Slack data to respond to your request, create and update diagrams, keep version history and decision ledgers, post files and canvases back into Slack, prevent duplicate event processing, troubleshoot failures, and measure which features and AI providers are working.

Rendered diagrams are uploaded as Slack files in your workspace. Decision ledgers are Slack Canvases in your workspace. Arialine also stores the diagram source and history in its PostgreSQL database so the board can be updated later and shown in the Home tab.

Support data is used to answer questions, investigate bugs, handle feature and billing-support requests, and respond to privacy/data requests. Product-update contact data and preferences are used only for the communication choices associated with that contact.

AI providers

For AI-assisted features, the relevant instruction, conversation context, and current diagram source may be sent through the configured fallback chain: DeepSeek API, Google Gemini, Fireworks AI, or NVIDIA NIM. Exact model versions may change as providers update their services.

Arialine does not use Slack data to train models. The providers process requests to return an answer under their own service terms. We do not sell Slack data or share it with advertisers.

Billing and payment data

Paddle is Arialine's Merchant of Record for paid subscriptions. Paddle collects the payer's email, payment method, invoices, tax information, and other billing details. Arialine receives the Paddle customer/subscription identifiers and billing state needed to operate the Team plan, but it does not receive card numbers.

The payer and the Slack workspace administrators are separate roles. Paying for Arialine does not grant Slack access. Workspace owners/admins may use Arialine's existing workspace-level subscription controls, while payer-specific financial information remains with Paddle.

What we do not collect

We do not collect Slack passwords, payment card numbers, Slack user tokens, or content from workspaces and channels that Arialine cannot access. We do not sell data, use it for advertising, or use it to train AI models.

Retention, access, transfer, and deletion

The recent-discussion context buffer expires after 24 hours. Board source, versions, decisions, settings, and related metadata are kept while the app is installed so the service continues to work. Uninstalling Arialine stops new processing, but it does not automatically delete existing records yet. Operational records and analytics are kept according to the configured PostHog and service-retention settings.

Support conversations and customer-contact records may also exist in Featurebase. A verified deletion or access request must therefore be handled across the relevant Arialine databases, product-activity records, PostHog, Featurebase, and any enabled operational mirror, while Paddle may retain billing records where it is legally required to do so.

You can ask what data we have about you or your workspace, request a copy in a usable format, or request deletion through the Arialine support page. The Slack Contact support shortcut opens that same browser live chat. If GDPR or another privacy law applies to you, use this route for access, portability, correction, objection, or deletion. We may ask for enough information to verify the workspace and request before acting.

Contact

For support, privacy, GDPR, and data requests, use the Arialine support page or the Contact support shortcut in Slack. If those channels are unavailable, hi@arialine.app remains the fallback contact address.