Perfectly Timed Emails
Engage users by delivering critical emails at the perfect local time.
Need to send a follow-up in 72 hours, or a reminder 3 days before a subscription expires? Schedule a webhook to your email service with WarpTrigger. It's the reliable, managed trigger for your one-time emails.
Trigger Anything, Anywhere, Exactly When You Need It
Schedule precise, fire-and-forget events in the future—set them relative to now (like "in 34 days 3 hours") or at specific times (like "9am New York time on August 1st"). Deliver via email, push, Telegram, webhooks, Zapier, GitHub Actions, and more. No servers, no cron boilerplate, just reliable execution.
Email Scheduling Shouldn't Be Hard
Building a reliable, timezone-aware queue for one-off emails is a distraction from your actual business.
DIY Solutions are Fragile
Scheduling a future email with in-app code is a recipe for failure. It's not persistent and will be lost on the next server restart or deployment.
Message Queues are Overkill
Setting up complex infrastructure just to delay an email trigger is massive engineering overhead for a simple problem.
Your Email Tool Lacks Precision
Most marketing email tools are for bulk campaigns, not for scheduling a unique, one-time email to a specific user based on their actions.
A Reliable Webhook Trigger for Your Email Service
WarpTrigger is the simple way to schedule your one-time transactional emails. We call the webhook; your email provider does the rest.
If your email provider (SendGrid, Postmark, Mailgun, etc.) has an API endpoint that can be triggered by a webhook, you can schedule it with WarpTrigger.
Need to send a 'trial ending' email at 5 PM in the user's local timezone? Schedule it with the timezone, and we'll trigger your provider at the correct moment.
Our managed queue is durable and persistent. You can schedule the email trigger and trust that it will happen, with a clear log of events.
How to Schedule a Future Email
A simple, three-step process to create a scheduled trigger for your email provider.
1. Get Your Email Provider's Webhook
Find the API endpoint URL for sending an email from your provider (e.g., SendGrid, Postmark) that can accept a POST request.
2. Craft the Payload
Create the JSON payload your email provider expects, including auth, recipient, subject, and body.
3. Schedule via WarpTrigger
Use our UI or a single API call with the provider's URL, the JSON payload, and the exact future time to send it.
Use Cases for Scheduled Email Triggers
How developers use WarpTrigger to reliably schedule one-time transactional emails.
Scheduled User Pro-Tips
Trigger a webhook to your email provider to send a 'pro-tip' email to a new user exactly 48 hours after they sign up.
Subscription Renewal Reminders
Schedule an email to be sent 7 days before a yearly subscription is due to renew, reminding the user of the upcoming charge.
Abandoned Cart Recovery
Trigger a 'You left something behind!' email to be sent exactly 2 hours after a user abandons their shopping cart.
Document Expiration Alerts
Schedule a 'your document is expiring' notification to be sent to a user 30 days before their uploaded ID expires.