I use the MZMT shipping module currently, with a table for US, Canada, and Other International. I sell a lot of heavy items (100+ lbs), and due to certain circumstances I'm finding that the only way I can accurately assess international shipping is to custom quote it, based on logistical factors besides just weight and ship-to location (which is all I'm doing now). How can I have international customers delay checkout and wait for me to custom quote the shipping, which will then allow them to check out on the website?
I'd like to make the process a little smoother for customers so that they can shop, get a quote back soon, and check out, instead of getting an explanation by me that I'm emailing them a paypal invoice with the custom shipping quote (and what the heck paypal is and how it works, just in case) or that they need to order over the phone.



