Yes I use this for my work at Atlas Copco Compressors Aust, as we have a 5Mb limit on outgoing emails during business hours. I just use the free version with no problems at all. Many of the parts catalogues exceed this and our email system holds them over to send in non-peak times (6pm-6am). It's not very helpful to my clients when they have a breakdown and need to identify a part ASAP
With this "We Transfer" I am able to send the attachment straight away. It emails you confirmation that the file has been sent and awaiting downloading by the receiver.
I think they hold the file for a week or so and it is then deleted.
Once the receiver downloads the file you are sent an auto reply confirming they have download the file, so you know for sure they have the information
This isn't a sales pitch, but it has made my life a lot easier. Previously I would have had to print Parts books to PDF and split them up into 2 or even 3 smaller files and email separately to my client.
Cheers Stephen