ActionSlackUpdated May 2026

How do I create a Slack reminder?

Short answer: Drop the "Slack → Set Reminder" action anywhere in your workflow, map the inputs from upstream nodes, and publish.

Use this action All 45 Slack 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
Reminder text text	string	Required	Message text to post. Supports Slack mrkdwn (e.g. bold, <@U123> mentions, <#C123> channel links).
When time	string	Required	When to fire — accepts Unix epoch seconds OR a natural-language phrase like 'tomorrow at 9am', 'in 30 minutes'.
Recipient (optional) user	string	Optional	User ID to remind. Leave empty to remind yourself (the connection's authed user).

Sample request

{
  "text": "e.g. Hello team :wave:",
  "time": "in 30 minutes",
  "user": "e.g. U0123456789"
}

Returns

{
  "ok": true,
  "raw": {},
  "text": "stand up",
  "time": 1712925600,
  "reminder_id": "Rm12345"
}

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

Triggered by

Apps that pair well as the trigger for Set Reminder.

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

Gmail → Slack

1 Gmail triggers

Google Sheets → Slack

2 Google Sheets triggers

FAQ

Questions about Set Reminder.

What does the Set Reminder action do in Slack?

Creates a Slack reminder for yourself or another user. Slack will DM the reminder at the scheduled time.

What inputs does Set Reminder require?

Required: Reminder text, When. 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 Slack 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 Set Reminder support batch operations?

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

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