Message and Attachment Size Limits in Gmail
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. Messages sent to your Gmail account that exceed the limit bounce back to the sender. You can attach any file type of file, but the size limit rules out most video and audio formats as well as large PDF documents with hundreds of pictures. Still, there are options for sending large files through Gmail.
Send and Receive Larger Files with Gmail
The easiest way to work around the message size limit is built-in to Gmail. You can send files using Google Drive while composing a message:
