Post every 123 Form Builder submission to a Slack channel
Contact requests, orders or applications appear in a channel with the main answers, so the team picks them up without checking the form's inbox.
New Form SubmissionSend Channel Message
Connect 123 Form Builder and Slack
Teams that collect requests with 123 Form Builder can see each submission in Slack, where they already work. FlowMattic posts entries to the right channel, can message the person who filled an internal form, set a follow-up reminder or share an uploaded file. Each workflow is built on the visual builder inside your WordPress admin.
1 trigger 14 actions 6 example workflows 1 ready-made template Unlimited runs
Try a pairing
When this happens in 123 Form Builder1 trigger
Do this in Slack14 actions
1. TriggerNew Form Submission2. ActionSend Channel MessageWhen 123 Form Builder fires New Form 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
123 Form Builder 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.
Send each department its own requests
A Router reads the department field and posts to the IT, HR or facilities channel, so each team only sees the requests meant for it.
New Form SubmissionRouterSend Channel Message
Confirm internal requests to the requester in Slack
For staff forms, Find User by Email looks up the person who submitted and Slackbot sends them a direct message confirming the request and what happens next.
New Form SubmissionFind User by EmailSend Direct Message
Remind the owner to call back a new enquiry
After a callback form is submitted, Add Reminder sets a Slack reminder for the sales owner with the person's name and number, so the call happens that day.
New Form SubmissionText FormatterAdd Reminder
Share uploaded files from the form in Slack
When the form has a file field, such as a CV or a photo of damage, Upload File puts the file into the channel next to the request.
New Form SubmissionUpload File
Send urgent reports to a private channel
A Filter passes only submissions marked urgent, such as safety or security reports, and posts them to a private channel the response team watches.
New Form SubmissionFilterSend Private Channel Message
More ready-made templates with both apps
Set up: submissions to a channel
At the end, each submission to your form is posted as a message in the Slack channel you choose.
Connect 123 Form Builder
In FlowMattic, add your 123 Form Builder account under Connects.
Connect Slack
Add a Slack connection with the workspace and channel you want to post in.
Capture a submission
Start a workflow with New Form Submission, pick the form and submit a test entry so FlowMattic captures the fields.
Post the message
Add Send Channel Message, choose the channel, write the message from the form fields, test it and switch the workflow on.
1. Trigger in 123 Form Builder
New Form Submission
-
2. Action in Slack
Send Channel Message
Fields mapped from the earlier steps (a typical setup)
From 123 Form Builder To Slack Name field First line Email field Contact line Message field Message body
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
- 123 Form Builder has one trigger and no actions, and Slack has no triggers, so every workflow here starts with a new form submission.
- Find User by Email only finds people already in your Slack workspace, so direct messages suit internal forms, not public ones.
- Field names depend on your form, so the mapping above is an example.
Triggers (1)
- New Form SubmissionTriggers when new form submission is received
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
123 Form Builder and Slack connect through FlowMattic on your own site, with no separate automation account in the middle and no charge per run.
Requests reach the right team
Routing by department, urgency or topic means each channel gets only what its team handles.
Every entry, no task fees
Runs are unlimited, so a form taking hundreds of entries a day costs the same as one taking a few.
Runs from your own site
Submissions pass through your WordPress server on the way to Slack, not through an outside automation account.
Common questions
How does the 123FormBuilder Slack integration work?
FlowMattic catches each new 123 Form Builder submission and runs the Slack steps you add, such as Send Channel Message, Send Direct Message or Upload File. You map the form fields into the message once and switch the workflow on.
Can one form post to several channels?
Yes. Add more Send Channel Message steps, or use a Router to choose the channel from an answer in the form.
Can I summarise long answers before they reach Slack?
Yes. Put an AI Agent step before the Slack message and ask it for a short summary, then post the summary with a link to the full entry.
Can I set the channel topic from a form?
Yes. Set Channel Topic can change a channel's topic from a form answer, which some teams use for an on-call or status form.
Did not find your answer? You can browse the help center or ask us directly.
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Install FlowMattic, connect both accounts and import a template. Every run stays on your own server.
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Reviewed 23 Oct 2026. The example workflows are written with AI from the real triggers and actions of both integrations and checked against them. 123 Form Builder integration 1.0, Slack integration 1.0.