I have a 'Sub Domain' set up from my ISP (free) and I have various email address's on that domain.
I was on the ISP's website and found some information about a
'Catch All' email address
eg my normal emails would be :-
myemail@myispsubdomain.co.uk etc etc.
So a catch all would be :-
catchall@myispsubdomain.co.uk
So what this does if anyone sends me an email and and its spelt wrong eg myemail
s@myispsubdomain.co.uk
or info@myispsubdomain.co.uk
or office@myispsubdomain.co.uk
It would go into the 'catch-all' and be sent to the email address you set it up to go to.
Another use would be sometimes you need a 'Throw away' email address so instead of going to say Gmail you could use anything before the @ sign .
eg
I tried abc123@myispsubdomain.co.uk
and in a short time it came into the email address I set the 'Catch All' to go.
Hope you understand that
and may be of use
.