When using Gmail, it's crucial to be aware of certain limitations regarding the size and content of your messages. These constraints ensure the efficient delivery of emails while preventing the system from becoming overloaded. The following sections will break down the specific rules Gmail applies to both the message body and attachments.

Character Limit in Email Content

Gmail imposes a specific character limit on the text you can include in your email message. This includes both the body content and any additional formatting or embedded code. While the system can handle large emails, it's important to understand these limits to avoid potential delivery issues.

  • Email Body Limit: Gmail allows up to 100,000 characters in the body of an email.
  • Subject Line Limit: The subject line can hold up to 100 characters, though it's recommended to keep it concise.

Important Note: While Gmail supports long messages, emails exceeding certain sizes may be flagged or rejected by the server. Keeping emails under the recommended size helps avoid delivery delays.

Attachment Size Limits

Along with text, Gmail also limits the size of attachments. The maximum size for attachments in a single email is 25 MB. If your email exceeds this limit, Gmail will automatically offer you the option to upload your files to Google Drive and share a link to them instead.

Attachment Type Maximum Size
Email Attachments 25 MB
Google Drive Link Up to 15 GB (if linked from Google Drive)