Bluehost Web Hosting Help

Email Attachment Size Limit

Bluehost servers have a 50 MB attachment limit for the outgoing emails sent via SMTP and webmail. However, it is recommended that your total attachment size not exceed 35 Megabytes. The reason being that there are a number of factors that can determine how large of a file attachment you may send. These factors include:

  • Your email is MIME encoded, which can increase the size of the email by 40%. This means a 35 MB file is the equivalent of 50 MB of space when MIME encoded for sending as an attachment.
  • Any limits your email client has on attachments.
  • Any limits the recipient's server (for example, Yahoo! & Outlook.com all have a 25 MB limit. Gmail has a 50 MB limit.)
  • How much free space is in the recipient's e-mail account, if their mailbox has a size limit. (If their mailbox is full, your message will be rejected.)

If you need to send larger files it is recommended that you upload the file to your account and then email a link to the file.

Email Client Limitations

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