Get Instant Solutions for Kubernetes, Databases, Docker and more
SparkPost is a leading email delivery service that provides a robust API for sending and managing emails. It is widely used by developers and businesses to ensure reliable email communication. SparkPost offers features like real-time analytics, advanced email templates, and high deliverability rates, making it an essential tool for any application requiring email functionality.
When using SparkPost, you might encounter an error indicating that an attachment type is not supported. This typically manifests as a failure to send an email or a specific error message returned by the API. The error can disrupt email communication, especially if attachments are a critical part of your emails.
Some common error messages related to unsupported attachment types include:
The root cause of this issue is the inclusion of an attachment with a file type that SparkPost does not support. SparkPost supports a range of common file types, but if your attachment is in a format outside this range, the email will not be sent.
SparkPost supports the following file types for attachments:
For a complete list of supported file types, refer to the SparkPost API documentation.
To resolve the "Attachment Type Not Supported" issue, follow these steps:
Check the file type of the attachment you are trying to send. Ensure it is one of the supported types listed above.
If the file type is unsupported, convert the file to a supported format. For example, you can use tools like Adobe Acrobat to convert documents to PDF or image editing software to convert images to JPEG or PNG.
Ensure your application code correctly specifies the file type in the email payload. Here is a sample code snippet for attaching a PDF file using SparkPost's API:
{
"content": {
"attachments": [
{
"type": "application/pdf",
"name": "document.pdf",
"data": "base64-encoded-content"
}
]
}
}
By ensuring that your attachments are in a supported format, you can avoid the "Attachment Type Not Supported" error in SparkPost. For more detailed guidance, visit the SparkPost Developer Hub.
(Perfect for DevOps & SREs)
Try Doctor Droid — your AI SRE that auto-triages alerts, debugs issues, and finds the root cause for you.