Are you finding a feature like Odoo POS send email to customer ?
We have created feature that allows to send E-Receipt from POS.
Lets check how it is working.
We have to enable this option `Prefer E-Receipt` in customer form.
To send receipt by email we need to enable this feature in POS Configuration form also.
Here, we can see this two feature that allow us to send email as well as update email for customer.
Once we click on `validate` button, then POS Order will be created and email address will be also updated in customer form.
At the same time, email will be sent.