email really free

Is email really ‘free’?

Ok, so there are many email services out there that do not require payment to use them. Instead of money, they are paid for with information about the people using them which advertisers then use to target customers.

As this blog is about invoicing, I am going to focus on the use of email to send and receive invoices, and in this context, whether or not email is really ‘free’.

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