Did you send the email to a hotmail or other web-based email account? (as in you dont require a client like MS OE or Mozilla TB) If you did then the receipt request may become obsolete - not all web-based email accounts support them as far as I know
OnePlus 5 review
30 UK artists and their beautiful posters for WCRS' Pride in London campaign
iPad Pro 10.5in (2017) review
Comment connecter un MacBook à une TV ?