Why it matters
Carriers impose file size limits on messages to prevent spam and delivery issues. Staying within these limits ensures your attachments are successfully delivered and not blocked or flagged.
Key Concepts
Attachment: Any file or image sent in a Whippy message.
Carrier Limits: Restrictions set by mobile or email carriers that determine the maximum file size that can be sent.
Delivery Compliance: Ensuring your attachments meet carrier rules to avoid failed deliveries or spam classification.
File Size Limits
File Type | Maximum Size | Notes |
JPG | Up to 5 MB | Ideal for photos or image-based content. |
PNG | Up to 1 MB | Recommended for graphics or screenshots. |
Up to 1 MB | Suitable for documents, forms, or flyers. |
Tips and Best Practices
Compress images before uploading to stay under file size limits.
Use JPG format for higher-resolution photos and PNG for lightweight visuals.
Keep PDF files concise — large documents should be hosted externally and shared via link.
If your file exceeds the limit, consider using a file-sharing service and including the link in your message.
Troubleshooting
Issue | Possible Cause | Fix |
File not sending | File exceeds carrier size limit | Resize or compress the file before sending. |
Message flagged or blocked | File too large or unsupported format | Reduce size or use a supported format (JPG, PNG, PDF). |
Poor image quality after compression | Over-compression | Adjust compression settings or crop the image instead. |