Sending Large Attachments Securely

RapidVPN/ May 2, 2017/ Blog/

With high internet penetration across the world, it is now easier to share and transfer files from the convenience of your office, school, or home. However, the standard email services have a maximum limit of 25MB, making it a headache if you have larger attachments. This prompts you to get a file sharing service, though security should be of concern.

Cloud Wards advice that before choosing a file sharing service for your large attachments, consider the type of encryption they have to ensure secure transfer of your attachments. What then are your options for sending large attachments securely over the internet?

In this guide, we highlight the most secure file sharing services you ought to consider for sending your large attachment via email.


DropSend is a user-friendly file sharing browser-based application that you do not need to install it on your computer. It has a free plan that supports file sizes of up to 4GB and uses 256-bit AES encryption to secure your file from third parties. The free plan allows you to send five files a month; however, they have subscription plans that support sending of files as big as 8 GB and more than 40 sends. It is also available as a mobile app for download from the Google Play Store or the iOS App Store.


According to One Legal file compression is one of the reliable ways of securely sending a large attachment possible to send through your regular work or personal email. 7-Zip is the leading file compression software that can run on Mac, Windows, and Linux. This software comes in handy when there are multiple files you need to send. Simply place the files in one folder and use 7-Zip to compress it.

As stated in an article posted on Tech Radar, 7-Zip allows you to set a password and this helps to maintain the attachment’s integrity and away from prying eyes. There is now new software installation for the recipient to access the files; most operating systems can open a zip file.


Given your data sharing requirements, you require a program that can easily send files without a limit restriction. SendThisFile have both free and paid for accounts, the latter allowing you to brand your large attachments.

Start by creating a free SendThisFile account, select your files, and upload them as an attachment to the SendThisFile servers. It uses a 128-bit end-to-end encryption security feature to send the file and ASE-256 feature while the file is awaiting download by the recipient. The attachment is available on the servers for a maximum of 6 days after which it is deleted.

Bonus Tips

Before you send your large attachments, ensure that you know the type of encryption they are using to know if your files are secured.