Your email exceeds the maximum allowed size. Reduce attachments or use file sharing instead.
SMTP error 552 means your message is too large:
The attached files exceed the server's maximum attachment size.
High-resolution images are making the email too large.
Different mail servers have different size limits (typically 10-25MB).
Compress files using ZIP or reduce image resolution. Most servers accept up to 25MB total.
Upload large files to Google Drive, Dropbox, or OneDrive and share the link instead.
If you have multiple attachments, send them in separate emails.
Convert documents to PDF or images to JPEG for smaller file sizes.
552 5.3.4 Message size exceeds fixed limit
552 Message exceeds maximum allowed size of 25MB
552 5.2.3 Message too large