It means Workspace has reached the maximum message size that it supports for sending an outbound message. To resolve the error message and send your email, try one or all of the following: Remove one or more attachments from the email by clicking remove next to an attachment.
How do I reduce the message size?
Compress your files before sending
- Navigate to the folder that contains the file you want to send.
- Select a file. ...
- Right-click the selection, select Send To > Compressed (zipped) Folder.
- This creates a new zip file that contains the file or files you selected in step 2.
Why is Gmail saying my message is too large?
Gmail processes messages up to 25 MB in size. This limit is applied to the sum of the message's text and the encoded attachment. Encoding makes the file size slightly larger, so if you have a file that is exactly 25 MB, it will not go through. Sending messages larger than 25 MB from Gmail yields an error.
