Add domains for uclive.ac.nz addresses.
These are undergrad (and maybe other) addresses for
the University of Canterbury (https://canterbury.ac.nz/).

add mac alternative domains
(@mac.com/@me.com)
these are legacy domains that
mac used to use which have been
merged into icloud

for more info see:

https://support.apple.com/en-us/HT201771
https://getmailspring.com/setup/access-mac-com-via-imap-smtp

also add ucsc.edu, which like the other uc's uses
google

Signed-off-by: Nicolas Serafini <serafini.nicolas@gmail.com>

These might need STARTTLS explicitly disabled in the msmtp config file though

possible email are:
- username@studenti.unitn.it
- username@ex-studenti.unitn.it
- username@alumni.unitn.it
- username@unitn.it

cloeses #577 #572

Erciyes University configuration is updated.

Add nixnet.email domains to domains.csv

the macro for sync all accounts uses 'mbsync -a' command, which
failed to run for users who have moved their ~/.mbsyncrc somewhere
else.

we should use mw -Y instead, which can detect the MBSYNCRC env

Rewrite #520.
Using `read var?'prompt'` is wrong. It is ksh (and zsh) specific.
Using `read -p 'prompt' var` is also wrong. It is bash specific.
Since we cannot assume which sh is implemented,
we should write POSIX-compliant code.