There can be lots of people with the same domain name in their address
but there is only one ‘jsmith@teamsthatwork.co.uk’ in the
world – that way email will only end up in the right computer ‘post
box’. If there are a lot of ‘John Smiths’ at the same domain, they may
have to use their middle initials (jmsmith) or a number after their
name (jsmith3) to distinguish between them.
If you are telling someone an email address you should read it out like
this: “jsmith at teamsthatwork dot co dot uk”. Use the word dot rather
than say full stop. If you are writing your email address in a letter and
it comes at the end of the sentence, do not use a full stop to end the
sentence as this may confuse someone because an email address
never ends with a full stop. If there are any errors in an email address
it will be bounced, or returned undelivered.