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Broadcasts let you send emails to your subscribed contacts at once.
  1. Click the Create Broadcast button from the navigation panel
  2. Choose a verified sender from the From field dropdown
  3. Write your email subject line and compose your content in the editor
  4. Click Send Email and configure your quota usage settings (see Quota Configuration below)
  5. Click Send to start sending to all subscribed contacts
  6. Monitor your email performance with metrics including delivery rate, bounce rate, open rate, and click rate

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Quota Configuration

Since broadcasts can consume large amounts of your quota, it’s important to control how much capacity they use. This prevents a single broadcast from using your entire quota. AWS SES enforces two types of limits on your account:
  • Daily quota: Maximum number of emails you can send in a 24-hour period
  • Send rate: Maximum number of emails you can send per second
When you configure a broadcast’s quota usage percentage, the system proportionally allocates both limits. For example, if you set 50% quota usage and your account has a 50,000 daily quota with 14 emails/second send rate, the broadcast will use 25,000 emails/day and 7 emails/second.

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Unsubscribe Handling

The system provides multiple layers of unsubscribe functionality to ensure compliance and maintain a healthy sender reputation:

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Automatic Unsubscription

Contacts are automatically unsubscribed when AWS SES reports a bounce or complaint event. This helps protect your sender reputation and ensures you don’t continue sending to invalid or unwilling recipients.

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Manual Unsubscribe Options

We provides two ways that allow users to unsubscribe manually.
  1. Unsubscribe footer (your responsibility): You should manually include an unsubscribe link in your email content. The editor provides an unsubscribe block that you can insert. The unsubscribe link must be https://getsendbase.com/unsubscribe?token={{unsubscribeToken}} to properly identify and unsubscribe recipients
  2. Unsubscribe headers (automatic): The system automatically adds unsubscribe headers to every email. These headers allow email clients to display built-in unsubscribe options, providing an additional compliance layer.

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Broadcast Statuses

Here are all the statuses that a broadcast can have:
  • draft: The broadcast is being composed
  • queued: The broadcast is waiting to be processed for sending
  • in_progress: The broadcast is currently being sent to contacts
  • published: The broadcast has been successfully sent to all contacts
  • paused: The system paused the publishing process

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Limitations

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Template Variables

Broadcasts currently do not support template variables for personalization beyond the built-in {{unsubscribeUrl}} and {{unsubscribeToken}} variables. This limitation exists because the GetContact API retrieving contact has a rate limit of 1 request per second, making it impractical to fetch personalization data when sending to thousands of contacts.