Quick answer: Application credentials and your authorized session can support history queries, archives and incremental backups. Access is limited to data available to that account. Credentials cannot recover inaccessible messages or retrieve another device's Secret Chat history from the cloud.
For occasional personal exports, first consider the official client's export features. Custom development is more useful for continuous archives, specialized search or a required output format.
Choose the right mechanism
| Mechanism | Use case | Design concern |
|---|---|---|
| Paginated history | Copy a selected chat in batches | Boundaries, identity and permissions |
| Message search | Find records by supported filters | Search scope and filter availability |
| Takeout | Organize an account-data export | Export scope, workflow and required waits |
| Updates | Maintain an initial archive | Reconnection, deduplication and changes |
For example, messages.getHistory is a user-only method. A normal Bot Token cannot act as a user session to retrieve arbitrary historical chats.
Build a recoverable archive
- Define the chats, time range, media policy and permitted readers.
- Save checkpoints only after each batch has been durably written.
- Index by account, chat and message identity to prevent collisions.
- Decide how edits, withdrawals and deletions affect the stored copy.
- Open the export separately and inspect text, timestamps, attachment links and failures.
This is a proposed archive design. A progress indicator reaching 100% does not prove completeness; use an inventory and sample verification.
Decide what deletion means
A mirror of the current chat and a retained snapshot serve different purposes. A mirror normally follows source changes. A retained archive needs an explicit retention policy and access scope. Explain how deleting an archive affects primary records, attachments and backup copies.
Avoid putting message bodies, phone numbers or download URLs into public diagnostics. Operators can often diagnose failures from stages and counts without reading the conversation.
Keep Secret Chats separate
Secret Chats are tied to their participating devices. A newly authorized session does not inherit another device's Secret Chat history. Ordinary cloud history is also subject to access, availability and content restrictions.
Takeout may require waiting or user action. Do not repeatedly restart an export because it cannot proceed immediately. See the export and deletion reference.
Prepare credentials and choose your tool
Already have credentials? Continue with media archives. Otherwise follow the application guide. For portal ERROR issues, contact GetTGAPI through gettgapi.com/en/help#contact, or use your access code at the application entry.
GetTGAPI helps obtain developer application credentials. It does not need to read your chats or keep your backup, and support does not need your session files.
Common questions
Can api_hash restore deleted chats? No. It grants no recovery mechanism for data the account can no longer access.
Can every export be imported back into Telegram? No. A readable backup, a custom database and official import formats are different. Verify import compatibility separately.