Give an announcement a final listen
Hear a team-approved announcement draft out loud before you share it more widely.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Text to speech stream
Converts text to a spoken audio stream, allowing latency optimization, specific output formats (some tier-dependent), and custom pronunciations; ensure the chosen model supports text-to-speech and text is preferably under 5000 characters.
Why this helps
A written announcement can look clear on screen but feel clumsy when read aloud.
- Catch wording that feels unnatural when spoken.
- Add a simple audio review after a draft is ready.
- Review a message without another round of copy and paste.
Setup
Build it in a few focused steps.
- 1Connect Slack and ElevenLabs to Notis once through the portal.
- 2Create the automation in the portal or ask Notis for it in plain language.
- 3Instruct Notis to make an audio preview from an announcement message when it gets the chosen review reaction.
- 4Select Message Reaction Added and choose a run-report channel.
- 5Test by reacting to one actual announcement draft.
Questions about this workflow
Can I choose which emoji starts the preview?
The trigger supports optional emoji filtering. Specify the reaction used for announcement review.
Does this post the audio back to Slack?
The action creates audio in ElevenLabs. Describe any desired follow-up in the prompt only if the available actions support it.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Elevenlabs. A trigger fires from one place; an action lands in another.
Slack triggers
Elevenlabs actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Add a pronunciation dictionary from file
Adds a new pronunciation dictionary from a lexicon file to improve speech synthesis accuracy.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add new project with attributes
Use to create a new elevenlabs project for text-to-speech synthesis (e.g., audiobooks); a project `name` is required by the api for creation, and content can be initialized using `from url` or `from document`.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Add rules to the pronunciation dictionary
Adds one or more custom pronunciation rules (alias or phoneme) to an existing pronunciation dictionary.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Add sharing voice
Adds an existing, shareable voice to a specified user's elevenlabs account library under a new custom name, requiring the user's public id and the voice id.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Add a voice
Adds a custom voice, requiring a `name` and a `files` list with at least one audio sample, to initiate cloning; returns `voice id` but voice is not immediately usable for synthesis.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Convert chapter to audio
Converts the textual content of a chapter, identified by `chapter id` within a `project id`, into audio format.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Convert a project
Converts an existing elevenlabs studio project, including all its chapters and using its configured settings and voices, into speech.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Create a previously generated voice
Finalizes the creation of a voice using its `generated voice id` from a previous generation step by assigning a name, description, and optional labels.
Connect any two apps with Notis in the middle.
Slack and Elevenlabs, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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