Unigram—Telegram for Windows 12.8.1.0

Telegram is a cross-platform instant messaging app that emphasizes fast message delivery, cloud-based syncing, and optional privacy controls. It is widely used across personal and group communication scenarios and supports a sizable global user base.

• Performance — Routes traffic through a distributed network of data centers to reduce latency and maintain connectivity on low-bandwidth mobile connections.
• Cross-device syncing — Standalone apps for phones, tablets and computers keep conversations accessible without requiring a persistent phone connection; cloud storage minimizes local disk usage.
• File handling — Supports sending of large media and documents across a range of formats, with per-file limits designed for transfer of substantial files.
• Security model — Employs a mix of cryptographic primitives (including AES-256, RSA-2048 and Diffie–Hellman) for encrypted transport and server-side storage; optional Secret Chats provide end-to-end encryption and self-destruct timers for messages.
• Scale and automation — Supports large groups (hundreds of thousands of members), media-rich sharing and developer APIs for bots and integrations that facilitate community management and team coordination.
• Reliability — Designed to minimize data usage while ensuring message delivery under constrained network conditions.
• Media and customization — Includes built-in photo and video editing, animated stickers and emoji, customizable themes and an open sticker/GIF platform for expressive use.
• Privacy controls — Provides per-message deletion for both sides, secret chats with E2E encryption, and published policies stating the service does not share user data with third parties or use it for advertising.
• Usability — Offers a clean interface that attempts to balance an extensive feature set with straightforward navigation and common messaging workflows.