Wikipedia
SendThisFile is a file transfer service operated by SendThisFile, Inc., which uses cloud computing and 128-bit TLS encryption to enable users to securely send and receive large data files through the Internet. The company was co-founded in 2003 by CEO Aaron Freeman and his father CFO Michael Freeman. SendThisFile has around 1.5 million users and has transferred over 40 million files.
To use the service the file sender enters the recipient's e-mail address and message into the company’s web form and then uploads the file to the company’s servers. The recipient receives an e-mail notification with a URL download link.
The company provides basic features for free and more advanced features for a monthly recurring fee.
The service acts as a primary alternative to e-mailing large e-mail attachments that are typically restricted by e-mail servers due to their large size. Corporate e-mail servers such as Microsoft Exchange Server allow companies to set limits on employee e-mail attachment sizes and the email sender may receive a non-delivery report as result, signifying that their recipient could not be reached. No-cost hosted email providers such as Gmail will also restrict users file attachment sizes, which are currently set at 25 Megabytes per email. These limits are set by companies to reduce server load which can impact server performance.
SendThisFile is also an alternative to FTP, online file storage and the sending of personal storage devices (CDs, DVDs, USB flash drives or Hard Disk Drives) via mail or overnight delivery service.