Yahoo Mail limits the size of messages sent through their servers. If your email contains a large attachment, you may need to find an alternative way to send it.

Yahoo Mail sends emails up to 25 MB in total. This limit applies to both the message and the attachments. If an attachment is exactly 25 MB, it will not be sent because the text and other data in the message add a small amount of data.

If a message you want to send via Yahoo Mail exceeds the size limit, you can use a number of strategies to reduce its size:

If you want to send a file that is larger than Yahoo Mail allows, you can use a file sending service or upload the file to Dropbox and send a link to the file through Yahoo Mail.