an email attachment is a computer file sent along with an email message. one or more files can be attached to any email message, and be sent along with it to the recipient. this is typically used as a simple method to share documents and images. a paper clip image is the standard image for an attachment in an email client. ==current usage== ===size limits=== email standards such as mime don't specify any file size limits, but in practice email users will find that they can't send very large files. over the internet a message will often pass through several mail transfer agents to reach the recipient. each of these has to store the message before forwarding it on, and may therefore need to impose size limits. the result is that while large attachments may succeed internally within a company or organization, they are unreliable when sending across the internet â and for that reason sending systems often arbitrarily limit the size their users are allowed to submit."setting message size limits in exchange 2010 and exchange 2007". as an example, when google's gmail service increased its arbitrary limit to 25mb it warned that: "you may not be able to send larger attachments to contacts who use other email services with smaller attachment limits"."google updates file size limits for gmail and youtube", geek.com."maximum attachment size", mail.google,com. in general, 10mb is considered safe for the maximum size of an email."what is maximum email attachment size (gmail, yahoo)", tothepc.com. email users can be puzzled by these limits because the mime encoding, which typically uses base64 adds ~33% overhead â so that a 20mb document on disk exceeds a 25mb file attachment limit.  for safer and more fluid way to send and receive attachments differing services have surfaced to conquer size problems. services like "eparcel/attachment service to help the email pain", eparcel.fi. eparcel/attachment-service moves attachments away from email-related systems and timestamp each eparcel to destroy the physical file after downloads. by this method mailbox size and email attachment limits can be circulated for sender and receiver.. ===dangerous file types=== email users are typically warned that unexpected email with atta
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