A bit of thread drift (oh no! Thread drift on TM. Unheard of!)
The cost of owning you own domain and hosting is really very small when you consider it gives you control of your own email addresses and the possibility of setting up a simple web site and gallery for family use. You can make it public or private or a mixture of both. Cost should be less than £75 a year tax included. Beware of so called free web hosting services: they are supported by advertising. My Italian hosting costs me less than €75 a year. A website package such as WordPress (probably the easiest to use) can be downloaded for free.
If you create a domain and have hosting that gives you an unlimited number of email addresses you can have one for all the family; for example fred@jonesfamily.uk (I've checked:that url does not exist at the moment) .

Peter

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