Sending emails directly from your FlutterFlow app is a powerful way to enhance user experience — whether it’s for sending welcome messages, password recovery links, contact form submissions, or order confirmations. In this guide, you’ll learn how to send emails using SMTP (Simple Mail Transfer Protocol) integration in FlutterFlow.
🧩 What is SMTP?
SMTP stands for Simple Mail Transfer Protocol, and it’s the standard technology used to send emails across the internet. With SMTP integration in FlutterFlow, you can connect your app to popular email services like:
- Gmail
- Outlook
- Zoho
- Mailgun
- SendGrid (with SMTP support)
- Any custom SMTP server
When to Use SMTP in FlutterFlow
Use SMTP in FlutterFlow when you need to:
- Send contact form responses
- Trigger automated emails (welcome, verification, thank you)
- Handle feedback or support tickets
- Notify users of important actions
⚙️ Prerequisites
Before setting up SMTP in FlutterFlow:
- You need access to an SMTP email service provider.
- You need your SMTP credentials:
- SMTP Host (e.g., smtp.gmail.com)
- SMTP Port (usually 587 or 465)
- Username (email address)
- Password or App Password (for Gmail)
- Sender email
🔐 Note: Never expose your SMTP credentials in public environments.
How to Configure SMTP in FlutterFlow?
Step 1: Go to the Actions Flow
- Open your FlutterFlow project.
- Select a widget (like a button) where the email should be triggered.
- Go to the Actions tab.
- Choose “Add Action” > Backend Call > Send Email (SMTP).
Step 2: Enter SMTP Configuration
You’ll be asked to provide the following details:
FieldDescriptionSMTP ServerE.g., smtp.gmail.comSMTP PortUsually 587 for TLS or 465 for SSLUsernameYour email addressPasswordApp-specific password (especially for Gmail)From EmailSender’s emailTo EmailRecipient’s email (can be user input)SubjectSubject of the emailBodyThe email message content (use dynamic values too)
Step 3: Test It
- Deploy your app or run in test mode.
- Trigger the email event (e.g., press a “Send” button).
- Check the recipient inbox for the test email.
Troubleshooting Tips
- Gmail SMTP Issue: You might need to enable 2FA and create an App Password for it to work.
- Invalid Credentials: Double-check username and password.
- Blocked Ports: Ensure the port (587 or 465) is open.
- Spam Folder: Emails may land in spam during testing — mark them as not spam.
Security Best Practices
- Never store SMTP credentials in plain text or expose them in your UI.
- Use environment variables or Firebase Remote Config (if needed for advanced use cases).
- Always use TLS/SSL encryption to send emails securely.
Use Case Examples
- Contact Us Form
- Collects name, email, and message
- Sends the form to your email using SMTP
2. Welcome Email
- Triggered after a new user registers
- Includes a custom greeting with their name
3. Order Confirmation
- Sends a confirmation message after a product is purchased
Conclusion
FlutterFlow’s built-in SMTP email action makes it incredibly easy to send professional emails without writing any backend code. It’s perfect for automating communications, improving UX, and adding business-grade features to your FlutterFlow app.
With just a few steps, you can connect to Gmail, Outlook, or any SMTP-compatible service — and send real-time, dynamic emails directly from your app.
From Our Parent Company Aeologic
Aeologic Technologies is a leading AI-driven digital transformation company in India, helping businesses unlock growth with AI automation, IoT solutions, and custom web & mobile app development. We also specialize in AIDC solutions and technical manpower augmentation, offering end-to-end support from strategy and design to deployment and optimization.
Trusted across industries like manufacturing, healthcare, logistics, BFSI, and smart cities, Aeologic combines innovation with deep industry expertise to deliver future-ready solutions.
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