In your Spotler SendPro dashboard, you can find undelivered messages by navigating to Report > Undelivered.
The Undelivered Messages page displays all messages that were not successfully delivered to recipients. This overview enables you, as the sender, to take appropriate follow-up actions when needed.
This article is about:
What is an undelivered message?
Undelivered messages are emails that could not be delivered or were blocked from delivery to your recipient. Unlike discarded messages—where no delivery attempt is made—undelivered messages do represent an attempted send.
➡️ Learn more about discarded messages here: FlowStep: Discard
Reasons for Undelivered Status
An undelivered message may fall into one of the following categories:
- Soft bounce: Temporary delivery failure (e.g. recipient’s mailbox is full or the server is temporarily unavailable).
- Hard bounce: Permanent delivery failure (e.g. the email address does not exist).
- Rejected: The message was blocked by our recipient filter, typically after a prior hard bounce or multiple soft bounces for the same recipient.
When a bounce occurs, we receive a response from the receiving Mail Transfer Agent (MTA), indicating the reason for non-delivery.
➡️ Learn more about the recipient filter here: Recipient Filter Overview
➡️ For more information about all the message states
Note
Messages that have not been delivered nor successfully been processed, because of an template error for example, can be found on the held messages page. Read more about this topic here.
What can you find on the undelivered messages page?
The Undelivered Messages page allows you to filter results based on the following criteria:
- The date message was submitted
- The source that submitted the message
- The flow that has processed the message
- The recipient
These filters help you narrow down the results and locate specific messages within the table.
You can download a CSV file containing a collection of data that matches your selected filters. To do so, click the Download button located in the top-right corner of the Undelivered Messages table. If available, the CSV file will include the following information:
- Id
- Submitted
- Sender
- Recipient
- Type
- Source
- Flow
- Status
- Subject
- Message-ID
- Bounce received
- Bounce type
- Bounce sub type
- Bounce reason
Resending undelivered messages
Undelivered messages are not automatically retried, as resending to a recipient who was previously unavailable is often ineffective. Additionally, the content of the original message may no longer be timely or relevant.
However, you do have the option to manually resend an undelivered message—either to the original recipient (if the issue was temporary) or to a different recipient.
To do this:
- Go to the Undelivered Messages table and click on the specific message to view its content.
- If the message was archived, you’ll be able to preview it.
➡️ Learn more about message archiving here: FlowStep: Archive - In the archive preview, click the Resend button located in the top-right corner.
- An input field will appear, allowing you to specify the recipient to whom you want to resend the message.
Important to know
Messages can only be resend individually. Either using the dashboard or our API.