Bluehost Web Hosting Help
Email Attachment Size Limit
Bluehost servers have a 35 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 35 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, Gmail, Yahoo! & Outlook.com all have a 25 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
- Outlook 2013
By default Outlook 2013 has an attachment size limit set to 20 MBs. Microsoft has created an article explaining how to override this limitation: "Attachment size exceeds the allowable limit" error when you add a large attachment to an email message in Outlook 2013
Recommended Help Content
Email Attachments - Blocked File Extensions
Why can I not send/receive certain types of attachment? (updated 2061 days ago)
Email not sending from Client or Webmail
Trying to send out emails from multiple email accounts fail from both webmail and third party email clients. Possible Reasons: The maximum emails per hour has been exceeded. This can be caused by forw (updated 66 days ago)
Email Accounts - Change the Mailbox (Size) Quota
Where do I Change my Mailbox (Size) Quota? How do I Increase or Decrease Mailbox (Storage) Quota? (updated 654 days ago)
Related Help Content
Cannot Send but can Receive Email
Explanantion as to what causes this the happen and how to fix it. (updated 65 days ago)
503 Error - No longer able to send email and no changes were made
"503 valid RCPT command must precede DATA" (updated 1080 days ago)
Sending large messages through BlueHost.com
Why can't I send large messages through BlueHost.com? (updated 430 days ago)
Email Is Not Reaching To All I Send
I send an email to one person and then do a carbon copy (Cc) to multiple other people. Not everyone is receiving the email, even when I try using blind carbon copy (Bcc). (updated 725 days ago)
Deleting a large number of emails from an account
There are a large number of emails or spam that need to be deleted from an email account. (updated 2097 days ago)
Email Returned Error: Speed Limit Exceeded
Why do my email messages keep getting returned? (updated 65 days ago)
MySQL Database Reported Size and SQL Size Differ
An exported .sql file shows as a different size than the reported size in cPanel (updated 1484 days ago)
Sending Emails Generates Error: 503 valid RCPT command must precede DATA.
Why do I receive error "503 valid RCPT command must precede DATA" when attempting to send email? (updated 1802 days ago)