When an email message is truncated, it usually means that the message contains more characters than the message field allows. Truncation occurs when a part of the message is cut off. This can happen when emails are too long and the ends are cut off. Depending on the server configuration, the body of an email synchronized with the device may be truncated. If there is enough space and the administrator permits it, you can download the rest of the email message.
This happens because of the size of the email code (excluding images), which has a limit of 102 KB. Unfortunately, this cannot be turned off. The embedded table may be the cause of this issue, as suggested by RJKY. It could be due to incorrect HTML encoding. You can check the HTML to make sure that all closing tags are present.
This problem has nothing to do with the SMTP service, as it delivers the entire message or none at all (if the destination POP3 server is down).Microsoft Outlook Express has a documented error that can be fixed by applying Cumulative Update for Outlook Express 6 Service Pack 1 (KB88779) or Cumulative Update for Outlook Express for Windows XP Service Pack 2 (KB88779). Google uses its own formula to determine where to truncate email content. This formula is a combination of line counting and size measurement. When sending a message using Microsoft Outlook Express, the recipient may report that text in the body is truncated and data may be missing. If the address had existed, then the message would not have been truncated and would have been received in its entirety. The error message “The message was not sent and the email was truncated” may appear when a message is automatically saved until it is sent.
The server (in this case Yahoo's) does not return the entire message in a return message, resulting in truncation for both users. There were no images or files in the body of the email, but there were some attachments.