These integration guides are not official documentation and the Strapi Support Team will not provide assistance with them.

Why Use Resend

Resend is a modern email service provider designed with developers in mind. It offers a powerful combination of developer-friendly APIs and robust email delivery capabilities, making it an ideal choice for integrating email functionality into your Strapi applications.

For more information, visit the Resend documentation.

Why Use Strapi

Strapi is the leading open-source headless CMS offering features, like customizable APIs, role-based permissions, multilingual support, etc. It simplifies content management and integrates effortlessly with modern frontend frameworks.

Explore the Strapi documentation for more details.

Strapi 5 Highlights

The out-of-the-box Strapi features allow you to get up and running in no time: 1. Single types: Create one-off pages that have a unique content structure 2. Customizable API: With Strapi, you can just hop in your code editor and edit the code to fit your API to your needs. 3. Integrations: Strapi supports integrations with Cloudinary, SendGrid, Algolia, and others. 4. Editor interface: The editor allows you to pull in dynamic blocks of content. 5. Authentication: Secure and authorize access to your API with JWT or providers. 6. RBAC: Help maximize operational efficiency, reduce dev team support work, and safeguard against unauthorized access or configuration modifications. 7. i18n: Manage content in multiple languages. Easily query the different locales through the API.

Learn more about Strapi 5.

Try the Live Demo

Strapi Launchpad demo comes with Strapi 5 in the back, Next.js 14, TailwindCSS and Aceternity UI in the front.

• Start your demo

Setup Strapi 5 Headless CMS

We are going to start by setting up our Strapi 5 project with the following command:

🖐️ Note: make sure that you have created a new directory for your project.

You can find the full documentation for Strapi 5 here.

Install Strapi

npx create-strapi-app@latest server

You will be asked to choose if you would like to use Strapi Cloud we will choose to skip for now.

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After that, you will be asked how you would like to set up your project. We will choose the following options:

? Do you want to use the default database (sqlite) ? Yes
? Start with an example structure & data? Yes <-- make sure you say yes 
? Start with Typescript? Yes
? Install dependencies with npm? Yes
? Initialize a git repository? Yes

Once everything is set up and all the dependencies are installed, you can start your Strapi server with the following command:

cd server
npm run develop

You will be greeted with the Admin Create Account screen.

Go ahead and create your first Strapi user. All of this is local so you can use whatever you want.

Once you have created your user, you will be redirected to the Strapi Dashboard screen.

Publish Article Entries

Since we created our app with the example data, you should be able to navigate to your Article collection and see the data that was created for us.

Now, let's make sure that all of the data is published. If not, you can select all items via the checkbox and then click the Publish button.

Enable API Access

Once all your articles are published, we will expose our Strapi API for the Articles Collection. This can be done in Settings -> Users & Permissions plugin -> Roles -> Public -> Article.

You should have find and findOne selected. If not, go ahead and select them.

Test API

Now, if we make a GET request to http://localhost:1337/api/articles, we should see the following data for our articles.

🖐️ Note: The article covers (images) are not returned. This is because the REST API by default does not populate any relations, media fields, components, or dynamic zones.. Learn more about REST API: Population & Field Selection.

So, let's get the article covers by using the populate=* parameter: http://localhost:1337/api/articles?populate=*

Getting Started with Resend

When integrating Resend with Strapi, proper testing and troubleshooting practices ensure reliable email delivery.

Testing Strategies

To ensure your email integration works flawlessly, implement these testing approaches:

1. Cross-Device Testing
   • Test emails on various devices (smartphones, tablets, desktops)
   • Verify formatting consistency across different screen sizes
   • Check responsiveness and layout adaptability
2. Email Client Testing
   • Use tools like Litmus or Email on Acid for preview testing
   • Verify rendering in major email clients (Gmail, Outlook, Yahoo)
   • Test both HTML and plain text versions
3. Network Condition Testing
   • Use Chrome DevTools Throttling to simulate various network speeds
   • Test email sending and receiving under limited bandwidth
   • Verify delivery timing under different conditions

Common Troubleshooting Solutions

When issues arise, here's how to address common problems:

1. Email Not Delivered
   • Check spam folders
   • Verify email logs in Resend dashboard
   • Confirm sender authentication (SPF, DKIM)
   • Review delivery status notifications
2. Bounced Emails
   • Monitor bounce reports in Resend dashboard
   • Validate recipient email addresses
   • Implement retry logic for soft bounces
   • Clean your email list regularly
3. Rate Limiting Issues
   • Implement exponential backoff for retries
   • Monitor sending quotas
   • Batch large email campaigns
   • Track API rate limits

For more on improving email delivery, consider reviewing email deliverability best practices.

Error Handling

Implement effective error handling to ensure system reliability:

1try {
2  await strapi.plugins['email'].services.email.send({
3    to: 'valid email address',
4    from: 'your verified email address', //e.g. single sender verification in SendGrid
5    cc: 'valid email address',
6    bcc: 'valid email address',
7    replyTo: 'valid email address',
8    subject: 'The Strapi Email plugin worked successfully',
9    text: 'Hello world!',
10    html: 'Hello world!',
11  })
12} catch (error) {
13  throw new Error(\`Failed to send email: ${error.message}\`);
14}

Debugging Tips

For effective debugging:

1. Console Logging
   • Implement detailed logging at key points
   • Track email sending process steps
   • Monitor API responses and errors
2. API Response Monitoring
   • Check Resend API responses
   • Monitor webhook notifications
   • Track delivery status updates
3. Email Logs
   • Regular dashboard monitoring
   • Track delivery patterns
   • Analyze bounce rates and causes

Best Practices

Follow these guidelines for optimal email delivery:

1. Authentication
   • Implement SPF and DKIM
   • Configure custom domain verification
   • Monitor sender reputation, and adopt effective sender reputation strategies
2. Content Quality
   • Use clear subject lines
   • Maintain consistent sending patterns
   • Include proper unsubscribe options
3. Technical Setup
   • Configure proper retry mechanisms
   • Implement rate limiting protection
   • Use test mode for development

For more detailed guidance, consult Mailgun's Email Deliverability Guide and the official Resend documentation for best practices in email delivery and integration with Strapi.

Awesome, great job!

Strapi Open Office Hours

If you have any questions about Strapi 5 or just would like to stop by and say hi, you can join us at Strapi's Discord Open Office Hours Monday through Friday at 12:30 pm - 1:30 pm CST: Strapi Discord Open Office Hours

For more details, visit the Strapi documentation and Resend documentation.