All Internet e-mail services have attachment limits to how big an attachment can be when sent over e-mail. If you want to send a large attachment over e-mail (e.g. over 20MB) you’ll need to use a different method of sharing the attachment. Below is additional information about how big of attachment you can send as well as other ways of sharing files.
What are e-mail attachment size limits?
All e-mail service providers have different attachment limits. Below is some of the top e-mail providers and their e-mail attachment limits.
Note: These limits are the receiving attachment limit sizes. If you are using an e-mail service such as Gmail and you are sending a large attachment to someone on a small ISP their attachment size allowed may be much smaller.
|E-mail Provider||Attachment limit|
What happens when I send an attachment that is too big?
If you send an attachment that is too big, you may receive a bounce back from the e-mail service with one of the following errors.
Note: It is also possible that an e-mail service may drop the e-mail, which means your recipient will not receive the e-mail and you’ll not be notified.
Too big of attachment e-mail errors
- 552: Message size exceeds maximum permitted.
- Attachment size exceeds the allowable limit.
- System Undeliverable, message size exceeds outgoing message size limit.
- The size of the message you are trying to send exceeds the global size limit of the server. The message was not sent; reduce the message size and try again.
What services can I use for big attachments?
The service you use depends on the type of file you want to share and what you recipient has access to on their computer or device. Below is a list of services in our recommended order.
|Service||Accepted files and advantages|
|Google Drive||Today, almost everyone has a Google account and with that account has access to Google Drive that gives them a free 15GB of storage with a 5TB file size limit, as long as the uploaded files are not converted to Google Docs, Slides, or Sheets.|
|Dropbox||Dropbox is another excellent service that comes with a free 2GB and the ability to earn up to 16GB of free storage. Also, with a Dropbox account, you can also share files with other people who do not have a Dropbox account.|
|YouTube||If you want to attach a video, there is no better online service then YouTube for sharing Videos. Also, what most people don’t realize is that YouTube videos can be made private which means only people who you share the link with can view the video.|
|OneDrive||Microsoft Windows 8, Windows 10, and Office365 users already have access to OneDrive (formerly known as SkyDrive) that gives access to 5GB of free storage and an easy way to share and collaborate with big files that cannot be sent over e-mail attachment. If you have subscribed to Office365, you have 1TB of storage.|