WhatsApp vs Slack

For U.S. and Canada users, most disputes must be resolved through individual arbitration unless you mail an opt-out within 30 days. This sharply limits going to court or joining class actions.

Even if message content is not ordinarily stored, WhatsApp collects broad activity, device, connection, IP, cookies, and estimated location data. This can reveal patterns about who you interact with, when, and how often.

WhatsApp shares data with Meta companies not just for security and infrastructure, but also to improve products and ad experiences across Meta services. That expands use of your data beyond core messaging.

Messages sent to businesses may be accessible to the business and its service providers, which can include Meta. Those conversations may be stored, read, or otherwise processed under the business's own privacy practices.

WhatsApp says it does not normally keep your messages once delivered. Undelivered messages are kept encrypted for up to 30 days, which is comparatively privacy-protective for message content.

If WhatsApp harms you, its total liability is generally capped at $100 or what you paid in the last 12 months. For a free service, that usually means very little practical compensation.

WhatsApp says it may modify, suspend, or terminate access at any time, including for risk, harm, or long inactivity. That gives the company broad discretion to remove features or disable accounts.

You can request account information and port your data through an in-app feature. This gives users a practical way to inspect and move some of their information.

WhatsApp provides an in-app account deletion tool and explains that deletion removes account info, profile photo, group memberships, and message history from WhatsApp. It also warns that others may still keep copies.

WhatsApp can update its terms and treats continued use as acceptance after notice of material changes. If you disagree, your main remedy is to stop using the service and delete your account.

Outside specific limits for undelivered messages, WhatsApp keeps information as long as needed for service, legal, security, or enforcement reasons on a case-by-case basis. That leaves retention periods open-ended for many data types.

WhatsApp is not a substitute for phone emergency services and will not connect you to police, fire, or hospitals. Users should not rely on the app in emergencies.

If you use Slack through work, your employer or workspace owner controls messages, files, settings, exports, and many privacy choices. In practice, your organization—not you—usually decides retention, access, and deletion of workspace content.

Workspace owners and admins may access, modify, or restrict your information, including profile details and workspace activity logs. Users should not assume workplace Slack activity is private from their organization.

Slack collects extensive non-content data including logs, device identifiers, approximate location, cookies, imported contacts, integration data, and audio/video metadata. This creates a detailed record of how you use the service even outside message content itself.

Slack says it does not 'sell' personal data under CCPA definitions, but it may share identifiers and internet activity with third-party advertisers for targeted ads off Slack. That means some personal data can still support advertising ecosystems.

Slack states it does not sell personal information as defined by the CCPA and says it would provide a right to opt out before doing so. This is a meaningful privacy commitment, even though ad-related sharing still occurs.

Users may have rights to access, correct, delete, restrict, object, and for Californians opt out of certain sharing. Slack also recognizes Global Privacy Control for cookie-based sharing opt-outs.

When integrations are enabled, Slack may receive and share data with those providers, which operate under their own privacy policies. Slack expressly does not guarantee those providers fully disclose permissions.

Slack keeps customer data according to employer instructions, but may retain other personal data as long as necessary for support, audits, legal compliance, disputes, and business interests. This does not give users a firm deletion timeline for all personal data.

Slack clearly says data may be transferred internationally, including to the U.S., and identifies Standard Contractual Clauses and APEC certifications as safeguards. This is helpful transparency for cross-border data handling.

Slack can change its privacy policy over time and asks users to review it, with extra notice only for material changes to privacy rights. Continued use may effectively mean accepting updated terms unless you deactivate your account.

Slack links to supporting materials like subprocessors, security practices, data request resources, transparency reporting, and data export guidance. That makes it easier for users and organizations to evaluate operational privacy practices.