Email Attachment Size Limit
If you are using assistive technology and are unable to read any part of the HostMonster website, or otherwise have difficulties using the HostMonster website, please call 866-573-HOST and our customer service team will assist you.
Skip to main content

HostMonster Web Hosting Help

Email Attachment Size Limit

HostMonster 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

Knowledgebase Article 397,416 views bookmark tags: email limits


Was this resource helpful?

Did this resolve your issue?


Please add any other comments or suggestions about this content:





Recommended Help Content

Why can I not send/receive certain types of attachment?
Knowledgebase Article 220,954 views tags: attachment block blocked email malware trojan virus

Database Size and Table Limits.
Knowledgebase Article 217,113 views tags: database limits size tables

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
Knowledgebase Article 589,257 views tags: email exceeded mailbox outlook quota receive receiving send sender unable

Related Help Content

Where do I Change my Mailbox (Size) Quota? How do I Increase or Decrease Mailbox (Storage) Quota?
Knowledgebase Article 428,388 views tags: account change decrease email increase mailbox quota size

How do I increase my file size limit in my PHP application?
Knowledgebase Article 635,095 views tags: optimize php upload uploads

Why do my email messages keep getting returned?
Knowledgebase Article 403,183 views tags: email messages returned sending

Can I make multiple IMAP connections to the same email address?
Knowledgebase Article 244,105 views tags: connections imap limit

There are a large number of emails or spam that need to be deleted from an email account.
Knowledgebase Article 320,873 views tags: delete email emails empty inbox spam trash

. Click the RoundCube logo. This takes you to the main interface screen for RoundCube where your Inbox will be displayed. On the left are your email folders, by default, RoundCube will always show you
Getting Started Article 357,995 views tags: email message reply roundcube send

How to install the php.ini file and then increase the PHP Memory limit.
Video "How-to" Tutorial 494,924 views tags: limit troubleshooting wordpress

How can I change the outgoing SMTP port from 25 to 26?
Knowledgebase Article 596,507 views tags: email outgoing port send sending smtp

This site utilizes JavaScript to function correctly. Looks like it's disabled on your browser. Please enable it for your best experience.

For instructions on enabling JavaScript, click here