The Email block allows you to send email notifications when specific events occur, such as a user completing your agent. You can also use it to send a recap email to the user.

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Configuring the Email Block

If you’re on the Hobby plan, you need to configure your own SMTP account to send emails. This is a precaution against spam and abuse. Several SMTP providers offer free plans with generous limits. Here are some recommended options:
SMTP ProviderFree Tier Details
SendGridUp to 100 emails/day for free.
Mailgun5,000 free emails for the first 3 months.
Amazon SESFree for up to 62,000 emails/month (AWS free tier).
ResendOffers a free tier for testing and low-volume usage.
If you’re on a Paid plan, you can send emails directly from notifications@release0.com without any additional setup.

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Configuration Steps using Resend as SMTP providers

Create an Account: Sign up for a free account on Resend. Create an API Key: After signing up, navigate to the API Keys section in your Resend dashboard and click on Create API key.
Release0.com - Resend API Key
Make sure you copy the API key, as you will need it in the next step.
Release0.com - Resend API Key
Make sure your domain is verified in your Resend account. You can do this by going to the Domains section in your Resend dashboard and following the instructions to verify your domain. for more information on how to verify your domain, please refer to the Resend documentation. Now head back to your Release0 agent and open the Email Block. In the block configuration, click on Add SMTP Account in the SMTP Settings and fill in the Resend provider information:
Release0.com - Resend SMTP Setup
  • From email: The email address you want to use as the sender. This should be a verified email address in your Resend account.
  • From name: The name you want to appear as the sender. This can be your company name or any other name you prefer.
  • SMTP Host: smtp.resend.com
  • SMTP Username: Type in Resend
  • SMTP Password: Your Resend API key.
  • SMTP Port: 465 (For encrypted/TLS connections use 2465, 587 or 2587)

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Resend SMTP Configuration Summary

TypePortSecurity
SMTPS465, 2465Implicit SSL/TLS (Immediately connects via SSL/TLS)
STARTTLS25, 587, 2587Explicit SSL/TLS (First connects via plaintext, then upgrades to SSL/TLS)
⚠️ Important: Make sure you fill in the From field for the destination email before configuring the SMTP settings. This is the email address where you want to receive notifications. You can use a variable to dynamically set the destination email based on user input. If this is not configured before setting up the SMTP settings, the setup process will fail since the test connection email will not be triggered.
Release0.com - Resend SMTP Setup
When you are done, click on Create to save your SMTP settings.

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Default Email Content

By default, the email sent contains a summary of the user’s responses. For example:
Subject: New Lead Notification
Body:
Your agent has collected a new lead! 🎉 Name: Jhon
Email: email@Release0.com
Company: Release0
Question: I’m interested in your services. Can I have more info? Check Results
You can customize this content to include your own text or HTML for a fully branded email experience.

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Adding Attachments

You can include attachments in your email using the Attachments option. Ensure the attachments are linked to a File Upload input block in your flow.

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Troubleshooting

If you’re not receiving the expected emails:
  1. Check the logs in your dashboard for errors.
  2. Verify that your SMTP credentials are configured correctly
  3. Ensure the recipient email address is valid.
  4. Make sure you fill in the From: of the destiantion email before configuring the SMTP settings. Otherwise, you will receive an error message ‘Invalid Configuration. We couldn’t send the latest email with your configuration’.
  5. Make sure you test your Email block once you publish your agent, Otherwise you will receive the error: Emails are not sent in preview mode
  6. Make sure you have added your domain to the verified domains in your SMTP provider. Otherwise, you will receive the error: Invalid configuration.