I have used many file transfer companies for work, this is by far one of my favorites! The customer service has been great as well (ask them about their team!). It's not that expensive but they are still very affordable when compared against some competitors in our marketplace - so it works out perfectly if price isn't an issue or priority!! Highly recommend. Nothing at all really comes up here because everything runs super smooth & seamlessly- perfect system integration/ flow between platform providers without any hiccups whatsover :) Sending large documents around via email attachments sometimes takes hours due do size limitations etc., which makes sense why these larger sizes were initially included since there was no way otherwise. Using FileStream API we're able to get round those issues now though using smaller sized chunks rather then having multiple parts sent through separately. I like that it is easy for me to use, and all my contacts are in one place so when I need help or have questions they're right there! The only thing I don't like about this program is that sometimes if you leave it open too long without using it then it will close down. It's really helpful because we were having issues sending large emails out to our customers. This has helped solve those problems very well.