# How to Build an Automated Email System in Bubble

- Tool: Bubble
- Difficulty: Beginner
- Time required: 25-30 min
- Compatibility: Paid Bubble plans (backend workflows required)
- Last updated: March 2026

## TL;DR

An automated email system in Bubble sends emails based on triggers like user signup, cart abandonment, or inactivity periods. This tutorial covers creating email templates stored in the database, building trigger-based workflows for welcome emails and order confirmations, scheduling delayed emails for abandoned cart recovery and inactivity re-engagement, and managing all templates from a central admin interface.

## Overview: Automated Email System in Bubble

This tutorial shows you how to build a complete email automation system that sends the right email at the right time based on user actions and inactivity patterns.

## Before you start

- A Bubble app on a paid plan
- An email service configured (SendGrid, Mailgun, or built-in)
- Backend workflows enabled
- Basic understanding of scheduled workflows

## Step-by-step guide

### 1. Create the email template management system

Create an 'EmailTemplate' Data Type with: name (text — identifier), subject (text), html_body (text), trigger_type (text — welcome, order_confirmation, cart_abandon, inactivity), delay_minutes (number — how long to wait before sending), is_active (yes/no). Populate templates for: welcome email (delay: 0), order confirmation (delay: 0), abandoned cart reminder (delay: 60 minutes), inactivity re-engagement (delay: 10080 minutes / 7 days). Build an admin page where you can edit each template's subject and body without touching workflows.

**Expected result:** Email templates are stored in the database and manageable from an admin interface.

### 2. Build instant trigger emails

For immediate emails: in the signup workflow, after creating the user, search for the active EmailTemplate where trigger_type = 'welcome'. Apply find-and-replace to substitute tokens like {{user_name}} with the user's data. Send the email. Repeat for order confirmation: after a successful payment, send the order_confirmation template with order details. These emails fire instantly as part of the triggering workflow with zero delay.

**Expected result:** Welcome and order confirmation emails send immediately when triggered.

### 3. Schedule delayed emails for cart abandonment

When a user adds items to their cart, schedule a backend workflow called 'send_cart_reminder' to run after the delay (e.g., 60 minutes). Pass the user and cart reference as parameters. When the workflow runs, first check if the cart is still active (not converted to order). If yes, send the abandoned cart email with cart items listed. If the cart has been converted, do nothing. This prevents sending reminders to users who already completed their purchase.

> Pro tip: Schedule a series of reminders: 1 hour, 24 hours, and 72 hours after abandonment. Each subsequent email should increase urgency or offer a small discount.

**Expected result:** Users who abandon their cart receive a reminder email after the configured delay.

### 4. Build inactivity re-engagement emails

Create a scheduled backend workflow called 'check_inactive_users' that runs daily. Search for users where last login date is more than 7 days ago (or your threshold) and who have not already received an inactivity email recently (check an 'inactivity_email_sent' date on User). For each inactive user, send the inactivity re-engagement template with personalized content. Update the User's inactivity_email_sent date to prevent duplicate sends. Schedule escalating messages: 7 days, 14 days, 30 days.

**Expected result:** Inactive users receive re-engagement emails at scheduled intervals to encourage return visits.

### 5. Track email performance and manage unsubscribes

Create an 'EmailLog' Data Type: template (EmailTemplate), recipient (User), sent_at (date), opened (yes/no), clicked (yes/no). Create a log entry for every email sent. If using SendGrid or Mailgun, set up webhooks to receive open and click events and update the EmailLog. Build a dashboard showing: total emails sent per template, open rates, click rates, and unsubscribe rates. Add an 'email_subscribed' yes/no field to User. Check this before sending any non-transactional email. Include an unsubscribe link in every marketing email. RapidDev can help implement advanced email analytics with A/B testing.

**Expected result:** Email performance is tracked and users can unsubscribe from marketing emails.

## Complete code example

File: `Workflow summary`

```text
AUTOMATED EMAIL SYSTEM SUMMARY
=====================================

TEMPLATE MANAGEMENT:
  EmailTemplate: name, subject, html_body,
    trigger_type, delay_minutes, is_active
  Admin page for editing templates
  Tokens: {{user_name}}, {{order_total}}, etc.

INSTANT TRIGGERS:
  Signup → Welcome email (delay: 0)
  Purchase → Order confirmation (delay: 0)
  Password reset → Reset email (delay: 0)

DELAYED TRIGGERS:
  Cart abandon → Reminder (delay: 60 min)
    Check: cart still active before sending
    Series: 1hr, 24hr, 72hr
  Inactivity → Re-engagement (delay: 7 days)
    Daily check for inactive users
    Series: 7d, 14d, 30d

EMAIL LOG:
  EmailLog: template, recipient, sent_at,
    opened, clicked
  Webhook from SendGrid: open/click events

UNSUBSCRIBE:
  User field: email_subscribed (yes/no)
  Check before non-transactional sends
  Unsubscribe link in every marketing email

DASHBOARD:
  Sent count per template
  Open rate, click rate
  Unsubscribe rate
  Performance by time period
```

## Common mistakes

- **Sending abandoned cart emails after the user has already completed the purchase** — This creates a confusing experience and damages trust with irrelevant messages Fix: Always check if the cart has been converted to an order before sending the reminder
- **Not including an unsubscribe option in marketing emails** — This violates CAN-SPAM and GDPR regulations and can get your email domain blacklisted Fix: Add an unsubscribe link in every non-transactional email and honor opt-outs immediately
- **Sending duplicate inactivity emails to the same user** — Without deduplication, the daily check sends repeat reminders, annoying users and triggering spam reports Fix: Track when each type of email was last sent to the user and skip if already sent within the defined period

## Best practices

- Always check conditions before sending delayed emails
- Include unsubscribe links in all non-transactional emails
- Track email open and click rates for performance optimization
- Store templates in the database for easy editing without code changes
- Personalize emails with user data for better engagement
- Test all email templates across email clients before going live
- Respect user email preferences and opt-out requests immediately

## Frequently asked questions

### Do I need a third-party email service?

Bubble's built-in email works for low volume. For production apps, use SendGrid or Mailgun for better deliverability, tracking, and higher sending limits.

### How many automated emails can I send per month?

This depends on your email service plan. SendGrid's free tier allows 100 emails/day. Bubble's built-in email has no official limit but is not designed for high volume.

### Can I A/B test email subjects?

Yes. Create two templates with different subjects and randomly assign users to each variant. Track open rates per variant in EmailLog to determine the winner.

### How do I prevent emails from going to spam?

Use a reputable email service (SendGrid/Mailgun), set up SPF, DKIM, and DMARC records on your domain, and avoid spam trigger words in subjects and content.

### Can I schedule emails for specific times?

Yes. Use Schedule API Workflow with a specific date/time. Schedule emails for business hours in the recipient's timezone for better open rates.

### Can RapidDev help build email automation?

Yes. RapidDev can implement complete email automation systems in Bubble including multi-step sequences, A/B testing, analytics, and deliverability optimization.

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Source: https://www.rapidevelopers.com/bubble-tutorial/add-an-automated-email-system-in-bubble
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