Overview

Novu normalizes inbound events and outbound replies, but each provider exposes a different subset of UI features. Use this matrix when implementing replies, typing, edits, and tool approval.

Supported capabilities

Capability	Slack	Teams	WhatsApp	Telegram	Email	Web Chat
Full context history	Yes	Yes	Yes	Yes	Yes	Yes
Threaded replies	Yes	Yes	Yes	Yes	Yes	Yes
Live typing indicator	Yes	Yes	Yes	Yes	No	Yes
React with eyes on new message	Yes	Yes	Yes	Yes	Yes	No
Plan card (chain of thought)	Yes (native)	Markdown edit-in-place	No	Markdown edit-in-place	No	Yes (thinking parts)
Rich text styling	Yes	Yes	Bold / italics	Yes	HTML	Yes (your UI)
Tap-to-respond (buttons)	Yes	Yes	Yes (up to 3)	Yes	Yes (action links)	Yes
Emoji reactions	Yes	Yes	Yes	Yes	Gmail only	No
Message edits in place	Yes	Yes	Yes	Yes	No	Yes
Action / tool approval	Yes	Yes	Yes	Yes	Yes	Yes
MCP tool approval	Yes	Yes	Yes	Yes	Yes	Yes
MCP connect card	Yes	Yes	Yes	Yes	Yes	Yes
Resolve conversation	Yes	Yes	Yes	Yes	Yes	Yes
Message queueing	Yes	Yes	Yes	Yes	Yes	Yes
Outbound file attachments	Yes	Yes	Not yet	Not yet	Not yet	Yes (file parts)
Quote reply	Plain post	Plain post	Native	Native	—	—

Replies stream word by word on Slack, Telegram, and Web Chat. On Teams, WhatsApp, and email the reply arrives once it is complete.

Channel pages

Slack

Block Kit, native plan cards, tool approval.

Microsoft Teams

Adaptive Cards, typing, tool approval.

Quick-reply buttons, session context.

Inline keyboards, edit-in-place plans.

Email

Threaded HTML, action-link approvals.

Web Chat

In-app headless hook, typing, tool approval.

Building blocks

Each building block page lists channel support for that API:

⌘I

Getting Started

Channels

Custom Code Agent

Managed Agent

Observability

Supported capabilities

Channel pages

Slack

Microsoft Teams

WhatsApp

Telegram

Email

Web Chat

Building blocks

​Supported capabilities

​Channel pages

Slack

Microsoft Teams

WhatsApp

Telegram

Email

Web Chat

​Building blocks

Supported capabilities

Channel pages

Building blocks