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Connect Fillout and Slack

Fillout forms collect demo requests, applications, internal requests and quiz answers. FlowMattic takes each new response and puts it in front of the people who act on it in Slack: a channel post for the team, a direct message for the owner, a reminder for the follow-up. It suits teams that already work from Slack all day.

1 trigger 14 actions 7 example workflows 2 ready-made templates Unlimited runs

Try a pairing

When this happens in Fillout1 trigger

Do this in Slack14 actions

1. TriggerNew Submission
2. ActionSend Channel Message

When Fillout fires New Submission, FlowMattic runs Send Channel Message in Slack with the data from that event.

You build this in the FlowMattic workflow builder on your own site. See the setup steps

Fillout and Slack workflows you can build

Each one uses only triggers and actions the two integrations ship today, plus FlowMattic's own tools. Where the library has a ready-made template, import it instead of building from scratch.

Fillout app icon Slack app icon Ready-made template

Post every new Fillout response to a team channel

The team reads new responses where they already talk, so a demo request or an application is picked up by whoever is free instead of waiting in the Fillout inbox.

New SubmissionSend Channel Message

View the template
Fillout app icon Slack app icon

Send each response to the channel for the topic chosen

A form with a topic question can feed several teams. A Router reads the answer and posts billing questions to finance, bugs to engineering and the rest to support.

New SubmissionRouterSend Channel Message

Fillout app icon Slack app icon

Confirm an internal request to the colleague who sent it

For IT or HR request forms filled in by staff, look the person up by the email they gave and send them a direct message saying the request reached the team.

New SubmissionFind User by EmailSend Direct Message

Fillout app icon Slack app icon

Keep high-value applications in a private channel

A Filter passes only responses that meet your bar, such as a budget above a set amount, and posts them to a private channel the leadership team watches.

New SubmissionFilterSend Private Channel Message

Fillout app icon Slack app icon

Share files people upload through the form

When a Fillout form asks for a brief, a CV or a photo, the file goes to the channel next to the response, so reviewers open it without logging into Fillout.

New SubmissionSend Channel MessageUpload File

Fillout app icon Slack app icon

Summarise long free-text answers before they are posted

An AI Agent step turns several paragraphs of answers into a short summary with the key facts, so the channel stays readable on busy days.

New SubmissionAI AgentSend Channel Message

Fillout app icon Slack app icon

Set a next-day follow-up reminder for each demo request

Slack reminds the sales rep the next morning to call the person who asked for a demo, so requests sent late in the day are not left until the weekly review.

New SubmissionAdd Reminder

Set up: responses to a team channel

At the end, every new response to your Fillout form appears in the Slack channel you pick, with the answers you choose.

  1. Connect Slack

    In FlowMattic, open Connects and add Slack with the workspace account that will post the messages.

  2. Start with New Submission

    Create a workflow, choose Fillout and the New Submission trigger, and follow the connection steps shown for your form.

  3. Send a test response

    Fill in the form once yourself so FlowMattic captures each answer as a field you can map.

  4. Post to the channel

    Add Send Channel Message, pick the channel and write the message with the name, email and key answers. Test the step, then switch the workflow on.

Import the ready-made template Beginner, about 5 min to set up
Post every new Fillout response to a team channel Template
  1. Fillout app icon 1. Trigger in Fillout New Submission
  2. Slack app icon 2. Action in Slack Send Channel Message

    Fields mapped from the earlier steps (a typical setup)

    From FilloutTo Slack
    Name answerMessage: who
    Email answerMessage: contact
    Form nameMessage: heading
    Submission timeMessage: received
Built on the FlowMattic canvas. Test each step with real data, then switch the workflow on.

Triggers and actions in this pair

A trigger starts a workflow. An action is something FlowMattic does in the app as a step.

Good to know

  • The fields come from the questions in your Fillout form, so the mapping above is only an example. Rename questions clearly before you map them.
  • Find User by Email only finds people who are members of your Slack workspace, so it suits internal forms rather than forms the public fills in.
  • Send Channel Message can also schedule the message for later, which helps if responses arrive overnight and you want them posted at the start of the working day.

Triggers (1)

  • New SubmissionTriggers when a form receives a new submission.

Actions (14)

  • Send Channel MessagePost or Schedule a new message to a specific #channel
  • Add ReminderAdds a reminder for the user
  • Create ChannelCreates a new channel
  • List All ChannelsRetrieve list of all channels
  • Set Channel TopicSets the topic on a selected channel
  • Set StatusSets your Slack status to the given text and emoji
  • Invite User To ChannelInvite an existing User to an existing Channel. You must be a member of the channel to invite someone to it
  • Find User by EmailFinds a user by matching against their email instead of their username
  • Find User by IDFinds a user by their ID.
  • Send Direct MessageSend a direct message to a user or yourself from the Slackbot. Can also schedule a message for later
  • Send Private Channel MessagePost a new message to a private channel you choose. Can also schedule a message for later
  • Update ProfileUpdate basic profile fields such as name or title
  • Find MessageFinds a Slack message using the Slack Search feature
  • Upload FileUpload file to your slack workplace

Why run this pair with FlowMattic

Fillout and Slack connect through FlowMattic on your own site, with no separate automation account in the middle and no charge per run.

Responses land where the team works

Sales, support and HR see new Fillout responses in Slack without checking the form dashboard or forwarding email notifications.

One form can serve several teams

Routers and Filters on the canvas decide which channel or person each response goes to, based on the answers given.

No cost per response

FlowMattic runs on your own WordPress site with unlimited runs, so a busy launch week of responses costs the same as a quiet month.

Common questions

How do I send Fillout form responses to Slack?

Add a Slack connection in FlowMattic, start a workflow with the Fillout New Submission trigger and add a Send Channel Message step. Map the answers you want into the message, test it with a real response and switch it on.

Can different forms post to different channels?

Yes. Build one workflow per form with its own channel, or use one workflow with a Router that checks a field such as the form name or a topic answer and picks the channel for each path.

Can I message the person who filled in the form?

Only when that person is in your Slack workspace. Find User by Email looks them up from the email answer, and Send Direct Message then sends the confirmation. For outside customers, send an email with the Email (SMTP) step instead.

Will file uploads from the form show up in Slack?

Yes, add an Upload File step after the message and map the file field from the response to it. Check the captured test data to see how your form passes the uploaded file.

Did not find your answer? You can browse the help center or ask us directly.

Start automating Fillout and Slack

Install FlowMattic, connect both accounts and import a template. Every run stays on your own server.

30-day money-back guarantee Unlimited workflows and runs Self-hosted

Reviewed 27 Oct 2026. The example workflows are written with AI from the real triggers and actions of both integrations and checked against them. Fillout integration 1.0.0, Slack integration 1.0.