There are limits, but they're pretty big. Pro accounts have a limit of 200 GBs, while free account are limited to a total of 5 GBs per account. Pro account holders can send any size (up to 200 GB) and number of files in a message. Transferring big files is not a problem for Loop.gl - in fact it's our bread-and-butter. See our pricing page to select your plan or upgrade.