Is there a limit to the size of a file upload?

I'm looking at creating a submission form for a local printing company.  They want their clients to be able to enter some typical form data and also upload their artwork files (these can be very large files).  Will this work with JotForm?  Is there a limit to the file size of an upload?  Are these files delivered via email, or are they stored online for retrieval?

Thanks, but I'm not really asking whether I can limit the file size.  I want to know if there is a maximum file size limit imposed by JotForm (i.e. the largest file size that JotForm can handle).  Also, my second question was: how does file retrieval work?  For example, if my client's customer uploads a 25MB PDF file, how does my client retrieve that file, as it may be too large for an email attachment.