An email attachment is a file that is added on to the message being sent so that the recipient receives both. This can then be downloaded and opened by the email recipient.
Typical email attachments include documents, photos and images, videos, music, and presentations.
You can recognize an email attachment by an email with a paperclip icon, a file name, and a file type such as .doc, .txt, .jpg or .pdf.
There is no uniform limitation on the size of email attachments. However, sending large files takes longer, especially when using mobile devices such as smartphones or tablets.
Large attachments can result in the email not being delivered because, for example, the recipient's email box is full or otherwise does not have enough space available for the attachment. In addition, email attachments cannot be delivered if the recipient's spam and virus protection system rejects these attachments.