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What is the Size of Mimecast Large Files?

Published in Email Security & Management 3 mins read

Mimecast Large File Send allows users to send email attachments up to 2 GB in size. This capability significantly expands the limits of traditional email systems, enabling the transfer of substantial documents, media, and other large files directly from a user's standard mailbox application.

Understanding Mimecast Large File Send

Mimecast Large File Send is a feature designed to overcome the common limitations of standard email attachment sizes. While most email providers restrict attachments to between 10 MB and 25 MB, Mimecast extends this capacity dramatically. This service is particularly beneficial for professionals and organizations that frequently need to share oversized documents, presentations, videos, or design files securely and efficiently.

Key Features and Benefits:

  • Expanded Capacity: The primary advantage is the ability to send files up to 2 GB, catering to a wide range of large data transfer needs.
  • Seamless Integration: Users can initiate the large file send directly from their familiar email client, such as Microsoft Outlook, without needing to use a separate portal or application. This ensures a smooth and intuitive user experience.
  • Enhanced Security: Beyond just size, Mimecast also prioritizes the security of these transfers. Files are typically encrypted and can be protected with additional security measures, ensuring sensitive information remains confidential during transit.
  • Tracking and Control: Senders often gain visibility into the delivery status, including whether the recipient has downloaded the file, providing better control and accountability over shared content.
  • Reduced Server Load: By offloading large files from the main email servers, Mimecast helps maintain the performance and efficiency of an organization's email infrastructure.

How it Works

When a user attaches a file exceeding the standard email limit (but within the 2 GB Mimecast limit) and sends it, Mimecast intelligently processes it as a large file. Instead of attaching the file directly to the email, Mimecast uploads the file to its secure cloud storage. The recipient then receives an email containing a secure link to download the file, rather than the file itself. This method prevents large attachments from clogging mailboxes or failing to deliver due to size restrictions.

Mimecast Large File Send vs. Standard Email Attachments

The difference in file size capabilities is substantial, as illustrated in the table below:

Feature Mimecast Large File Send Standard Email Attachments
Maximum File Size Up to 2 GB Typically 10 MB – 25 MB
Delivery Method Secure Download Link Direct Email Attachment
Security Encrypted, Secure Storage Varies by Provider
User Experience Integrated in Mailbox Integrated in Mailbox
Recipient Experience Clicks Link to Download File Arrives in Inbox
Use Cases Large Documents, Media, Data Small Documents, Images

Practical Applications and Examples

The 2 GB limit of Mimecast Large File Send is invaluable in various scenarios:

  • Marketing and Creative Teams: Sending high-resolution images, video drafts, or large design files to clients or colleagues for review.
  • Engineering and Architecture: Sharing CAD drawings, project plans, or simulation data that often exceed hundreds of megabytes.
  • Legal and Financial Services: Exchanging large case files, audit reports, or complex spreadsheets securely and reliably.
  • Educational Institutions: Distributing large research datasets, course materials with embedded media, or software packages.

By leveraging this capability, organizations can streamline workflows, avoid reliance on less secure third-party file-sharing services, and ensure that critical, large-sized information reaches its intended recipients without hassle. For more detailed information on Mimecast's solutions, you can visit the Mimecast official website.