Table of Contents

Understanding the Email History

Lesley Updated by Lesley

What is the Email History?

Knack keeps track of every email sent through your form views and scheduled tasks. This is useful for confirming that your recipients have received the email, troubleshooting any potential SPAM detections, and more.

See our guide on emails to learn how to use email rules in your app: Send Emails.

Locate the History

Form Views

You can find the email history in the editor of the form view that contains the email rule.

From the Pages section of the Builder, click on your form view to open the view editor and click the "Email Rules" tab. You will find the link labeled "View email delivery history" at the top of the page.

If you do not see the link, it means the view does not have any email rules. Click here to learn how to add an email rule.

Open the view editor for the form and click on "Email Rules". Then, click on "View email delivery history":

Your email history still stores the history for any form email rule you may have previously deleted.

Scheduled Tasks

You can find the email history of any scheduled tasks that send out emails from the "History" tab of the task editor. From the Data section of the Builder, click on the "Tasks" tab in a table menu and click on the task with the email rule.

Go to the "History" tab - you'll see the history of task runs on this tab and when you click on "View Mail Delivery History" you'll see a list of the emails that were sent out.

View the History

Once you've clicked the link, a modal window will appear with a table containing the following columns:

  1. Date
  2. Recipients
  3. Subject
  4. Status


The date the email was sent. You can click on the expand icon to view the content of the message (if available).


The list of recipients that were sent the email. All recipients (To, CC, BCC) are included in a single comma-separated line.


The subject of the email. If you used field values, it will show you the full, rendered subject.


The result of the email delivery. It can be one of the following:




The server is in the middle of queueing the email to be sent


The email has reached the queue and is being prepared to be delivered


The email cannot be immediately delivered, but it hasn't been completely rejected. We will continue to try delivering a deferred email for 72 hours.


The email has been received by the recipient's server. This event does not guarantee that the email was placed in the recipient's inbox. It still needs to go through client SPAM filters, etc.


This event informs you when an email has been dropped. Dropped emails will not be re-sent. If you encounter this status, you should contact our support team immediately for more details. There are a number of reasons your email will not even be sent to a recipient for delivery:

  • The email account that you tried to reach does not exist. Please try double-checking the recipient's email address for typos or unnecessary spaces.
  • Recipient address rejected, we may need to white label your domain through our email whitelist request form.
  • Mailbox unavailable.


The server cannot or will not deliver a message, Bounces often are caused by outdated or incorrectly entered email addresses. Many times you won't know a bounced email address until it bounces. This event can help you ensure it doesn't bounce again by updating the email address in your Database.


The email has been reported as SPAM by the recipient or their email provider. Several SPAM reports may have your account's email privileges revoked; try to avoid sending the same email to these recipients.


The email was not sent because the email originated from an account with emails disabled. All emails are sandboxed on Trial accounts.

Message Body

To see the contents of the email sent from the rule, click on the link in the Subject column. A gray box will show up below with the email body fully rendered.


  • At the moment email history is not available with emails sent with action links. 

How did we do?

Scheduled Tasks