ActionMattermostUpdated May 2026

How do I send a Mattermost DM?

Short answer: Drop the "Mattermost → Send Mattermost DM" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Use this action All 7 Mattermost actions

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

Field	Type	Required	Description
User IDs (sender + recipient) user_ids	array	Required	Array of two user IDs — yourself and the recipient
Message message	string	Required	—

Sample request

{
  "user_ids": "{{trigger.user_ids}}",
  "message": "{{trigger.message}}"
}

Returns

{
  "id": "channel_abc",
  "type": "D"
}

Use these fields in downstream nodes for routing, logging, or error handling.

Triggered by

Apps that pair well as the trigger for Send Mattermost DM.

Any of these apps can fire this action as part of a workflow.

Google Sheets → Mattermost

2 Google Sheets triggers

HubSpot → Mattermost

18 HubSpot triggers

FAQ

Questions about Send Mattermost DM.

What does the Send Mattermost DM action do in Mattermost?

Sends a 1:1 or group DM by passing user IDs. Auto-creates the DM channel if needed. For "alert specific person" notification patterns.

What inputs does Send Mattermost DM require?

Required: User IDs (sender + recipient), Message. Every input accepts a static value or a variable from any upstream node in your workflow.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Mattermost returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does Send Mattermost DM support batch operations?

Yes. Run Send Mattermost DM inside a Loop node to process arrays. Tiny Command handles Mattermost's rate limits automatically so you don't have to throttle manually.

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