Email Size Calculator

Email size refers to the amount of data that is included in an email message. This includes not only the text of the message itself, but HTML formatting, any attachments or embedded images that are included in the email.

The size of an email is typically measured in bytes, kilobytes (KB), or megabytes (MB), depending on the amount of data included. The larger the size of the email, the longer it may take to send or receive, especially if the recipient has a slow internet connection or if the email contains large attachments.

There is no standard email size as it can vary depending on the email service provider and the message content. However, most email providers have a maximum email size limit to prevent their servers from being overloaded with large files.

For example, Gmail’s maximum email size is 25 megabytes (MB) for incoming messages, which includes both the message text and any attachments. However, the maximum attachment size for outgoing messages is 25 MB, which means that the total message size can be larger if there is no attachment or if the attachment size is smaller than 25 MB.

Other email providers may have different maximum size limits for emails, so it’s always a good idea to check with your provider if you’re unsure.

The average email size can vary greatly depending on the content and attachments included in the email. However, according to recent studies, the average size of an email message is around 75 kilobytes (KB). This includes only the text of the message, excluding any attachments that may be included.

Mailmeteor has a maximum email size limit of 1 megabytes (MB) for the message text. Attachments have a different limit of 5MB (learn more).

Gmail has a maximum email size limit of 25 megabytes (MB) for incoming messages, which includes both the message text and any attachments. However, the maximum attachment size for outgoing messages is also 25 MB, which means that the total message size can be larger if there is no attachment or if the attachment size is smaller than 25 MB.

If you try to send an email that exceeds the maximum size limit, Gmail will show you an error message and suggest that you use Google Drive to share the file instead. Google Drive allows you to share larger files, up to 15 gigabytes (GB) in size, by creating a link to the file that you can include in your email.

The maximum email size limit in Outlook can vary depending on the version of Outlook you are using, as well as your email service provider. Here are some general guidelines:

• Outlook.com (formerly known as Hotmail) has a maximum email size limit of 25 megabytes (MB) for incoming and outgoing messages, including both the message text and any attachments.
• For Microsoft 365, the maximum email size limit is 150 MB for incoming messages and 100 MB for outgoing messages, including both the message text and any attachments.
• If you are using a desktop version of Outlook (such as Outlook 2019, 2016, or 2013), the maximum email size limit may depend on your email service provider. Some providers may have a maximum size limit of 20 or 25 MB, while others may allow larger files to be attached.

It’s important to note that even if your email service provider allows for larger files to be attached, some recipients may have more restrictive size limits on their end, so it’s always a good idea to check with the recipient before sending large files via email.

There is no official standard for the maximum email size. However, most email providers have established their own size limits to prevent their servers from being overloaded with large files.

For example, the Internet Engineering Task Force (IETF) recommends that the maximum email size should be no larger than 64 megabytes (MB). However, this recommendation is not universally followed, and many email providers have set their size limits lower, typically between 10 MB and 25 MB.

It’s important to note that the maximum email size limit may also depend on the recipient’s email service provider, so it’s a good idea to check with the recipient if you’re unsure. Additionally, sending large files via email can sometimes cause issues with the recipient’s inbox, so it’s often better to use a file-sharing service or cloud storage platform for larger files.

There are several ways to reduce the size of an email:

• Remove unnecessary content: review the email and remove any unnecessary content, such as duplicate information or large signature files.
• Removing formatting or design: sending emails in HTML format, make the email look more professional and visually appealing, but it can also significantly increase the size of the email. You can try sending the email in plain text format instead.
• Resize images: If your email contains images, consider resizing them before attaching them to the email. High-resolution images can take up a lot of space, so resizing them to a smaller resolution can help reduce the size of the email.
• Compress attachments: If your email contains large attachments, consider compressing them before attaching them to the email. This can significantly reduce the size of the email. Most operating systems have built-in compression tools, such as Zip or RAR, that you can use to compress files.
• Use a file transfer service: Consider using a file transfer service, such as WeTransfer, FileZilla, or ShareFile, to share large files instead of attaching them to the email. You can then include a link to the file in the email.
• Send multiple emails: If you have a large amount of content to send, consider breaking it up into multiple emails rather than sending one large email.

By following these tips, you can reduce the size of your email and increase the likelihood that it will be delivered quickly and without any issues.

Emails larger than 102KB are clipped on Gmail, so recipients have to click on “[Message Clipped] View entire message” to access the content.

Your data stays yours - like all products made by Mailmeteor. Email Size Calculator works only on your machine and no data is transmitted to us or a third-party. With this said, this page has Google Analytics for marketing purposes and is protected by reCAPTCHA for anti-abuse. Consequently, Google’s Privacy Policy and Terms of Service apply.