# Change history: Messages

[← Changelog](/docs/changelog). Entries: 23.

- 2026-09-30 [NEW-0930-2: Chats: the unread mark, read later, mentions, the membership check and chat folders](/docs/changelog/2026-09-30#new-0930-2-chats-the-unread-mark-read-later-mentions-the-membership-check-and-chat-folders)
- 2026-09-30 [NEW-0930-8: Chats: messenger v2 — deletion, joining, the parent chat, the access check and v2 modes of the chat card, creation and update](/docs/changelog/2026-09-30#new-0930-8-chats-messenger-v2-deletion-joining-the-parent-chat-the-access-check-and-v2-modes-of-the-chat-card-creation-and-update)
- 2026-09-30 [NEW-0930-20: Chats: messages on the messenger v2 methods — the first page, views, disappearing messages and read marks](/docs/changelog/2026-09-30#new-0930-20-chats-messages-on-the-messenger-v2-methods-the-first-page-views-disappearing-messages-and-read-marks)
- 2026-09-30 [FIX-0930-21: restore partial legacy message batch results](/docs/changelog/2026-09-30#fix-0930-21-restore-partial-legacy-message-batch-results)
- 2026-09-30 [FIX-0930-22: restore the existing legacy message mutations](/docs/changelog/2026-09-30#fix-0930-22-restore-the-existing-legacy-message-mutations)
- 2026-09-30 [FIX-0930-23: restore legacy feed parameters for ordinary keys](/docs/changelog/2026-09-30#fix-0930-23-restore-legacy-feed-parameters-for-ordinary-keys)
- 2026-09-30 [FIX-0930-24: restore legacy read-mark input handling](/docs/changelog/2026-09-30#fix-0930-24-restore-legacy-read-mark-input-handling)
- 2026-09-30 [FIX-0930-25: restore legacy message-send fields](/docs/changelog/2026-09-30#fix-0930-25-restore-legacy-message-send-fields)
- 2026-09-30 [FIX-0930-26: block message viewers for read-only keys](/docs/changelog/2026-09-30#fix-0930-26-block-message-viewers-for-read-only-keys)
- 2026-09-30 [NEW-0930-44: Chats: reactions, pinned messages, forwarding, in-chat search and typing](/docs/changelog/2026-09-30#new-0930-44-chats-reactions-pinned-messages-forwarding-in-chat-search-and-typing)
- 2026-09-30 [NEW-0930-45: Chats: anchors, channel comments, message blocks and the number of pinned messages](/docs/changelog/2026-09-30#new-0930-45-chats-anchors-channel-comments-message-blocks-and-the-number-of-pinned-messages)
- 2026-09-29 [BC-0929-14: chat read boundaries, file metadata and publication recovery](/docs/changelog/2026-09-29#bc-0929-14-chat-read-boundaries-file-metadata-and-publication-recovery)
- 2026-09-25 [NEW-0925-15: Chats: the format=v2 mode, chat loading, counters and messages around a message](/docs/changelog/2026-09-25#new-0925-15-chats-the-format-v2-mode-chat-loading-counters-and-messages-around-a-message)
- 2026-09-12 [BC-0912-3: a meaningless body on message edit, chat members and post update is refused, not executed](/docs/changelog/2026-09-12#bc-0912-3-a-meaningless-body-on-message-edit-chat-members-and-post-update-is-refused-not-executed)
- 2026-09-12 [BC-0912-4: numeric path ids of the chat and notification endpoints are checked before the Bitrix24 call](/docs/changelog/2026-09-12#bc-0912-4-numeric-path-ids-of-the-chat-and-notification-endpoints-are-checked-before-the-bitrix24-call)
- 2026-09-11 [FIX-0911-10: the messenger API description now matches what the endpoints answer](/docs/changelog/2026-09-11#fix-0911-10-the-messenger-api-description-now-matches-what-the-endpoints-answer)
- 2026-08-21 [NEW-0821-10: Open Channels session transcript via the API](/docs/changelog/2026-08-21#new-0821-10-open-channels-session-transcript-via-the-api)
- 2026-08-11 [BC-0811-18: marking messages read now requires a key with write access](/docs/changelog/2026-08-11#bc-0811-18-marking-messages-read-now-requires-a-key-with-write-access)
- 2026-08-04 [FIX-0804-19: a bot message without text is refused with a clear error instead of a false success](/docs/changelog/2026-08-04#fix-0804-19-a-bot-message-without-text-is-refused-with-a-clear-error-instead-of-a-false-success)
- 2026-08-01 [FIX-0801-10: Bitrix24 error messages no longer carry HTML markup](/docs/changelog/2026-08-01#fix-0801-10-bitrix24-error-messages-no-longer-carry-html-markup)
- 2026-07-28 [NEW-0728-8: chats: limit clamp echo in meta](/docs/changelog/2026-07-28#new-0728-8-chats-limit-clamp-echo-in-meta)
- 2026-07-14 [FIX-0714-14: Five silent false-success / hint defects: an honest response instead of a fake success](/docs/changelog/2026-07-14#fix-0714-14-five-silent-false-success-hint-defects-an-honest-response-instead-of-a-fake-success)
- 2026-07-05 [FIX-0705-1: Chat message send — a clear error when the text is empty](/docs/changelog/2026-07-05#fix-0705-1-chat-message-send-a-clear-error-when-the-text-is-empty)