I work for a "Photocopier company" and we have known for several weeks that Vodafone was having trouble with their email servers so today's Stuff announcement was no surprise to us.
Our concern is not with receiving email but sending it (Scan to Email via Vodafone's SMTP servers on port 25)
There will be many customers with older MFDs who will be unable to scan to email because the old machines do not have encryption (SSL or TLS)
There will probably be sales opportunities for us but we expect a lot of agro from customers who will blame us - not Vodafone.