> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cassidyai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Send email

> Send an email directly from a Workflow using Cassidy's built-in email sender.

Send an email directly from a [Workflow](/workflows/overview) using Cassidy's built-in email sender. Use this for notifications, alerts, or any email that doesn't need to come from a specific inbox. For sending from your own email account, use [Send Email with Gmail](/integrations/google-workspace/gmail/workflows) or [Send Email with Outlook](/integrations/microsoft-365/outlook/workflows).

<Steps>
  <Step title="Add the action">
    In the Workflow builder, click **+** between blocks and select **Send Email** from the action library.

    <Frame>
      <img src="https://mintcdn.com/cassidy/ETDpmcHPDhtRlAWy/images/reference/send-email-img-0.png?fit=max&auto=format&n=ETDpmcHPDhtRlAWy&q=85&s=7c797532b9aa9eb201787871ff99c3c0" alt="Action library with Send Email selected" width="880" height="686" data-path="images/reference/send-email-img-0.png" />
    </Frame>

    <Frame>
      <img src="https://mintcdn.com/cassidy/ETDpmcHPDhtRlAWy/images/reference/send-email-img-1.png?fit=max&auto=format&n=ETDpmcHPDhtRlAWy&q=85&s=b90b8490f4d1660305c47b8527b1f365" alt="Send Email action added to the Workflow" width="896" height="1460" data-path="images/reference/send-email-img-1.png" />
    </Frame>
  </Step>

  <Step title="Choose the recipients">
    In the **Send To** field, select members of your organization to receive the email. If left blank, the email is sent to the user who triggered the Workflow.

    <Frame>
      <img src="https://mintcdn.com/cassidy/ETDpmcHPDhtRlAWy/images/reference/send-email-img-3.png?fit=max&auto=format&n=ETDpmcHPDhtRlAWy&q=85&s=121479611f30058ff5b0e9aef76bb383" alt="Send To field with organization member dropdown" width="880" height="222" data-path="images/reference/send-email-img-3.png" />
    </Frame>

    You can also click the pencil icon to switch to a text input where you enter a comma-separated list of email addresses. Recipients must use the same domain as your organization. Click the pencil icon again to switch back to the dropdown.

    <Frame>
      <img src="https://mintcdn.com/cassidy/ETDpmcHPDhtRlAWy/images/reference/send-email-img-4.png?fit=max&auto=format&n=ETDpmcHPDhtRlAWy&q=85&s=f10d54bb69601cac72a5f58479aecb7a" alt="Send To field in comma-separated email mode" width="902" height="240" data-path="images/reference/send-email-img-4.png" />
    </Frame>
  </Step>

  <Step title="Enter the subject">
    In the **Subject** field, enter the subject line for your email. Use **#** to [insert variables](/guides/prompt-engineering#workflow-prompts) from previous steps or the trigger.

    <Frame>
      <img src="https://mintcdn.com/cassidy/ETDpmcHPDhtRlAWy/images/reference/send-email-img-5.png?fit=max&auto=format&n=ETDpmcHPDhtRlAWy&q=85&s=a566ff946b1eac69212447bb25c83220" alt="Subject field with variable reference" width="637" height="153" data-path="images/reference/send-email-img-5.png" />
    </Frame>
  </Step>

  <Step title="Write the email body">
    In the **Email Body** field, enter the content of your message. Use **#** to reference variables and personalize the email.

    <Frame>
      <img src="https://mintcdn.com/cassidy/ETDpmcHPDhtRlAWy/images/reference/send-email-img-6.png?fit=max&auto=format&n=ETDpmcHPDhtRlAWy&q=85&s=05749b3acf16531bd23a5a50876935fe" alt="Email Body field with variable references" width="635" height="204" data-path="images/reference/send-email-img-6.png" />
    </Frame>
  </Step>

  <Step title="Add attachments (optional)">
    Select variables from previous trigger inputs or action outputs to include as attachments. For example, you can attach files from [Export as PDF](/reference/actions/export-as-pdf) or [Export as Microsoft Word Document](/reference/actions/export-as-word) actions.

    <Frame>
      <img src="https://mintcdn.com/cassidy/ETDpmcHPDhtRlAWy/images/reference/send-email-img-7.png?fit=max&auto=format&n=ETDpmcHPDhtRlAWy&q=85&s=208854a9ae94d9909e8f1d4cacd7163d" alt="Attachments field with variable selector" width="894" height="332" data-path="images/reference/send-email-img-7.png" />
    </Frame>
  </Step>
</Steps>

## Reply to email trigger messages

When your Workflow uses an [Email trigger](/reference/triggers/email), the Send Email action can reply directly to the incoming email thread. Enable **Reply to Trigger Email** in the action settings to automatically thread the response, preserve CC recipients, and set the reply-to address to your Workflow's dedicated email address.

If your Email trigger uses a [custom email address](/reference/triggers/email#custom-address-and-organization-restrictions), replies will use that custom address as the reply-to, keeping the conversation consistent for the sender.

## Related

* [Email trigger](/reference/triggers/email)
* [Deploy an Agent via email](/agents/deploy/email)
* [Gmail Workflows](/integrations/google-workspace/gmail/workflows)
* [Outlook Workflows](/integrations/microsoft-365/outlook/workflows)