Zoho Mail Message and Attachment Size Limits

Email is made to send files — as long as they are reasonably sized. Documents that are too big cause all kinds of problems, often in unexpected places.

So, most email services have a limit on the size of file you can include in a message. Zoho Mail is no different. Its attachment and email size caps should be high enough to send all kinds of documents and photos.

Zoho Mail Message and Attachment Size Limits

Zoho Mail allows

• messages up to 12 MB in size;
• attached files can be up to 10 MB.

Sending and Receiving Larger Files

To send larger files, you can try a file sending service instead of attaching the documents directly.

Zoho Mail Error for Oversized Messages

If somebody tries to send you an email exceeding the size limits, they will get back a "Delivery Status Notification (Failure)" message that gives as the reason for the failure to deliver

• 554 554 5.2.3 MailPolicy violation Error delivering to mailboxes (state 18).