Telegram — Cloud Messaging & Private Chat

Telegram is a free cloud-based messaging platform launched in 2013 and built by the team behind VK. Every ordinary chat is stored in Telegram's distributed cloud, which lets messages appear instantly on all linked devices and survive a lost phone. The platform supports one-on-one chats, groups of up to 200,000 members, broadcast channels, and file transfers of up to 2 GB per file. Telegram also ships secret chats, which are end-to-end encrypted and stored only on the two participating devices. The service is funded by its founders and optional Premium subscriptions rather than advertising in private chats.

Registration runs through a phone number or anonymous number purchase, with no email address required. Telegram clients exist for iOS, Android, Windows, macOS, Linux, and the web, and each client is open source so the code can be audited. Channels let creators broadcast to unlimited audiences, while bots and the Bot API let developers automate notifications, payments, and workflows.

Telegram Premium adds larger uploads, faster downloads, and extra stickers, but the core messaging product remains free. The platform does not sell user data and does not display ads inside private conversations.

Telegram routes every message through a custom distributed data center network rather than a single centralized server cluster. Chats are encrypted in transit with the MTProto protocol, then stored in the cloud for synchronized access. Secret chats add a separate end-to-end encrypted channel between exactly two devices. Setting up an account takes under a minute and requires only a phone number.

Telegram delivers messages through its own data centers with no practical rate limit on ordinary chat traffic. Secret chats and voice calls use additional encryption layers, and Premium users get faster media downloads and larger uploads.

Telegram bundles messaging, broadcasting, automation, and file storage into one client. The feature set is unusually broad for a free messenger, and most tools work identically on mobile and desktop.

Feedback on Telegram consistently praises delivery speed, device sync, and group capacity. Recurring criticism focuses on the default encryption model and spam in large public groups. Overall sentiment among long-term users remains strongly positive.

Telegram leads on speed, group size, and multi-device sync, but its default encryption model differs from messengers that encrypt everything end-to-end. The comparison below reflects that balance.

Telegram protects ordinary chats with client-server encryption using the MTProto protocol, and secret chats with end-to-end encryption that only the two devices can decrypt. The company says it has never disclosed user data to third parties and does not sell information to advertisers. Two-step verification, active session management, and per-chat privacy settings give users direct control over exposure. Because cloud chats are stored on Telegram servers, they are recoverable across devices but not end-to-end encrypted by default.

New accounts can register with an anonymous number, and usernames let people contact you without sharing a phone number. Telegram publishes transparency reports and maintains a bug bounty program for security researchers. Users should still enable two-step verification, since SMS codes alone can be intercepted.

Telegram is free to download and free to use for messaging, calls, groups, channels, and standard file sharing. There are no per-message fees, no subscription required for core features, and no advertising inside private chats. Telegram Premium is an optional subscription that unlocks larger uploads, faster downloads, extra stickers, and advanced chat management. The free tier remains fully functional for individuals and most organizations.

Costs appear only when you choose optional services such as Premium, anonymous numbers, or third-party bots that set their own prices. Because Telegram runs its own infrastructure, there are no carrier SMS charges for in-app messages. Data usage depends on your mobile plan, not on Telegram fees.

Telegram suits people who want fast, synchronized messaging across many devices and communities that need very large groups or broadcast channels. Developers benefit from the Bot API, and privacy-focused users can rely on secret chats for sensitive conversations. Casual users get a free, ad-free messenger with generous file limits.