Questions about LORs(Rotman, Schulich, Ivey, Sauder, McGill)

The questions concern the general process of automated LORs but since I'm applying to the above mentioned, I thought might as well mention them in the title. Feedback from current students would be very helpful, but as I said this concerns the general process.

-First, lets talk about the email addresses. Do the emails HAVE to be official company addresses (generated through MSOutlook) or can my recommenders use their private addresses (gmail/hotmail)? I haven't told the company I'm leaving, even though both my managers know. They suggested I should put in their private addresses and not their official ones. The company I work for has a very strict email monitoring policy. Can we do that and does that, in any way, reflect badly on the recommendations?

-What is the process exactly? Will my managers be sent a form to fill out and email back or will they access some portal and enter the information there? If it is a form, do they print it out and fill it by hand or can they fill it up using Adobe or Paint or something?

- As an international student, should I warn my bosses that they might be contacted by phone or email for a follow-up? One of my managers is not very good (POOR) with spoken English, I'm wondering if that can also damage my recommendation?

Hoping for some solid feedback. Thanks in advance.