Message size limit
You can send and receive emails up to 25MB in size with Yahoo Mail.
This means that the total encoded size of the email message you're sending cannot exceed 25MB. Attachments sent with emails have to be encoded into a format other email programs can read. This encoding adds about 33% to the original size of the attachment. So a 1.5MB attachment will turn into a 2MB attachment after encoding.
Keeping your emails, attachments and all, under 25MB will help make sure your emails get where you want them to go quickly.
Want to send larger files? Use the "Share from Dropbox" feature available in Yahoo Mail. Learn how in our "Share Flickr photos and Dropbox files in Yahoo Mail" help article.
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