Email Attachment Size Limits

Overview

PXME enforces file size limits for email attachments to ensure reliable delivery and protect sender reputation. This article explains the maximum file size allowed, why limits exist, and the best alternatives for sharing larger files with your patients or leads.

Understanding Email Attachment Limits

All email providers set limits on how large an attachment can be. If an email exceeds this limit, it will bounce back and show an error inside your PXME Conversations tab.

Common error messages include:

• “Attachment size exceeds the allowable limit”

• “552: Message size exceeds maximum permitted”

• “System Undeliverable, message size exceeds outgoing message size limit”

• “The size of the message you are trying to send exceeds the global size limit of the server. The message was not sent; reduce the message size and try again.”

Why Limits Exist

• Provider restrictions – Free email accounts typically allow smaller attachments; business/professional accounts often allow larger.

• Security – Large attachments can overload mail servers or be used maliciously.

• Consistency – Limits ensure smooth, consistent email delivery across different providers.

PXME (via Mailgun) Limit

• Maximum size per email (including attachments): 25MB

⚠️ If your file(s) push the email size beyond this limit, the message will bounce.

What To Do If Files Are Too Large

If attachments exceed the size limit:

1. Upload them to a cloud storage provider like Google Drive, Dropbox, or OneDrive.

2. Insert the shareable link into your email instead of attaching the file.

This ensures reliable delivery and avoids bounce errors.

Upload Enhancements in PXME

PXME simplifies file sharing by automatically handling large files during the email and SMS upload process.

Key Features

• Effortless Media Library Integration – Upload files directly from your device or select from your PXME media library.

• Automatic Cloud Linking – Any file larger than 20MB (or SMS file attachments) is automatically converted into a clickable link.

• Dynamic Video Thumbnails – Video uploads automatically generate GIF thumbnails to boost engagement.

Benefits for Users

• No extra steps – No need to compress files or use external services.

• Efficiency – Faster workflow when composing messages.

• Better engagement – GIF thumbnails improve email click-through rates.

FAQs

Q: What is the maximum file size I can attach to an email?
A: Up to 25MB per message (including all attachments).

Q: What happens if my email exceeds the size limit?
A: It will bounce back, and you’ll see an error in PXME Conversations.

Q: How can I send larger files?
A: Upload them to Google Drive, Dropbox, or OneDrive and insert the link into your email.

Q: What improvements has PXME made for attachments?
A: Files over 20MB are auto-converted into links, and video uploads generate GIF thumbnails for better presentation.

Q: How does this help me?
A: You’ll avoid bounce errors, simplify file sharing, and create more engaging messages for your audience.