Built for real-world scheduling

Some things should happen later — reliably — and sometimes only after a human decision.

Instead of stitching together cron jobs, SQS queues, worker processes, retry logic, and monitoring, CallMeLater is a managed alternative — a single API to schedule durable actions from 30 seconds to 6 months out.

Developer & System

Automated scheduling for your backend

A developer-friendly alternative to cron jobs, queues, and custom retry systems

Trial Expiration Cleanup

Automatically clean up resources when a trial ends — unless the user upgrades.

Scenario

A user starts a 14-day trial. If they don't upgrade, you must revoke access and clean up data.

  • Schedule a cleanup webhook at trial_end_at
  • Cancel the action instantly if the user upgrades
  • No cron jobs, no background workers to maintain

Delayed Retries Without Cron

Retry an operation hours or days later without keeping state.

Scenario

An external API is down. Retrying every minute is pointless.

  • Schedule retries with exponential backoff
  • Attempts and outcomes are fully logged
  • Your app stays stateless

Grace Period Enforcement

"We'll delete this in 7 days unless..."

Scenario

Compliance rules require a grace period before deletion.

  • Schedule a deletion action
  • Send a reminder before execution
  • Allow snooze or cancellation

Deferred Side Effects

Trigger follow-up actions later — exactly once.

Examples

Delayed partner notifications, post-processing jobs, background audits

  • One scheduled webhook
  • Guaranteed attempts
  • Idempotent execution

External System Follow-Ups

Check back later when another system catches up.

Scenario

You integrate with a system that requires manual review.

  • Schedule a follow-up check
  • Reschedule automatically if unresolved
  • No polling infrastructure required
Coordination

Smarter action management

Group related actions and control how they interact

Replace Previous Deployments

When a new deployment is scheduled, automatically cancel the previous one.

Scenario

CI/CD triggers multiple deployments — only the latest should run.

  • Group actions with coordination_keys
  • Use replace_existing to cancel old actions
  • No duplicates, no race conditions

Prevent Duplicate Notifications

Don't send the same reminder twice if one is already scheduled.

Scenario

User triggers an action multiple times — only one should be scheduled.

  • Use skip_if_exists to prevent duplicates
  • Returns existing action instead of creating new
  • Safe for idempotent retry logic

Track Related Actions

See the history of all actions in a workflow or deployment chain.

Scenario

Debug why a deployment was cancelled or see all actions for a user.

  • Filter actions by coordination key
  • See which action replaced another
  • Full audit trail for compliance

Simple API, powerful results

Schedule a webhook in a single API call. No infrastructure to manage, no workers to maintain, no state to track.

Get Started Free 
curl -X POST https://api.callmelater.io/v1/actions \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Trial expiration",
    "schedule": { "wait": "14d" },
    "request": {
      "url": "https://your-app.com/webhooks/trial-expired",
      "method": "POST",
      "body": { "user_id": 42 }
    }
  }'
<?php
$response = Http::withToken('sk_live_...')
    ->post('https://api.callmelater.io/v1/actions', [
        'name' => 'Trial expiration',
        'schedule' => ['wait' => '14d'],
        'request' => [
            'url' => 'https://your-app.com/webhooks/trial-expired',
            'method' => 'POST',
            'body' => ['user_id' => 42],
        ],
    ]);
import requests

response = requests.post(
    "https://api.callmelater.io/v1/actions",
    headers={"Authorization": "Bearer sk_live_..."},
    json={
        "name": "Trial expiration",
        "schedule": {"wait": "14d"},
        "request": {
            "url": "https://your-app.com/webhooks/trial-expired",
            "body": {"user_id": 42},
        },
    },
)
const action = await fetch('https://api.callmelater.io/v1/actions', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer sk_live_...',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    name: 'Trial expiration',
    schedule: { wait: '14d' },
    request: {
      url: 'https://your-app.com/webhooks/trial-expired',
      body: { user_id: 42 },
    },
  }),
});
const axios = require('axios');

const { data } = await axios.post(
  'https://api.callmelater.io/v1/actions',
  {
    name: 'Trial expiration',
    schedule: { wait: '14d' },
    request: {
      url: 'https://your-app.com/webhooks/trial-expired',
      body: { user_id: 42 },
    },
  },
  { headers: { Authorization: 'Bearer sk_live_...' } }
);
payload := map[string]interface{}{
    "name": "Trial expiration",
    "schedule": map[string]string{"wait": "14d"},
    "request": map[string]interface{}{
        "url":  "https://your-app.com/webhooks/trial-expired",
        "body": map[string]interface{}{"user_id": 42},
    },
}

body, _ := json.Marshal(payload)
req, _ := http.NewRequest("POST", "https://api.callmelater.io/v1/actions", bytes.NewBuffer(body))
req.Header.Set("Authorization", "Bearer sk_live_...")
req.Header.Set("Content-Type", "application/json")
response = HTTParty.post(
  'https://api.callmelater.io/v1/actions',
  headers: { 'Authorization' => 'Bearer sk_live_...' },
  body: {
    name: 'Trial expiration',
    schedule: { wait: '14d' },
    request: {
      url: 'https://your-app.com/webhooks/trial-expired',
      body: { user_id: 42 }
    }
  }.to_json
)
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Human-in-the-Loop

When humans need to decide

Interactive reminders that require confirmation before executing

"Did You Do X?" Reminders

Lightweight accountability without task management tools.

Scenario

You need confirmation that something was done.

  • Send a reminder email
  • One-click Yes / No / Snooze
  • No login required for recipients

Approval Before Action

Require human approval before executing risky actions.

Scenario

A destructive operation must be approved before proceeding.

  • Reminder is sent instead of execution
  • "Yes" triggers the webhook
  • "No" cancels the action

Escalation When No One Responds

If nobody replies, notify someone else.

Scenario

Critical actions cannot be ignored.

  • Primary reminder sent
  • Automatic escalation after timeout
  • Full audit trail

Team Confirmation Workflows

"Everyone must confirm" vs "first response wins."

Scenario

Safety-critical or compliance steps require team sign-off.

  • Multiple recipients
  • Configurable confirmation mode
  • Execution depends on responses

Expert Validation & Review

Have professionals validate content, data, or decisions — and collect their feedback automatically.

Scenario

You build a knowledge base and need a professional (lawyer, doctor, accountant) to validate entries. Send each entry for review, collect Approve/Reject with comments, and update your database automatically.

  • Send items for review with full context
  • Experts respond with one click + optional comment
  • Retrieve responses via API or webhook callback
  • Build validated datasets without manual follow-ups

Manual Reminders Without Building an App

Use CallMeLater as a simple reminder engine.

Scenario

You want reminders without building UI or mobile apps.

  • Create reminders via dashboard or API
  • Email-based interaction only
  • No accounts required for recipients

How it works

Simple flows, reliable execution

Scheduled HTTP Action
1
Create action via API or dashboard
2
Stored & scheduled in durable queue
3
Dispatched at time locked for execution
4
HTTP request sent with retry on failure
Human Approval Flow
1
Create reminder with recipients
2
Email sent with Yes/No/Snooze
3
Recipient responds one-click action
4
Webhook triggered with response data

What you don't need to build

Every "do this later" feature starts simple. Then you need retries, monitoring, dead-letter queues...

Message Queues

An alternative to SQS, RabbitMQ, or Redis queues. No workers to scale, no dead-letter queues to monitor.

Cron Jobs

A modern alternative to crontabs and scheduler processes. No more "did the job run?" debugging at 3 AM.

Retry Logic

No custom backoff code, no failure tracking tables, no manual reprocessing scripts.

Monitoring

No CloudWatch alarms, no Datadog dashboards for queue depth. Full audit trail built in.

A typical delayed-job setup requires a message broker, worker processes, a retry strategy, dead-letter handling, and monitoring — across SQS, Celery, Sidekiq, BullMQ, or similar. CallMeLater is a managed alternative that replaces all of that with one API call.

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