The customer will not use the email service to send out advertisements for commercial purposes by email or to send standardised emails to a multitude of recipients.</p> 6. Misuse and child &amp. youth protection <p>6.1 The customer is required not to use Posteo improperly:</p> <ul> <li>not to send any spam (and no more than 500 emails per hour and/or 1000 emails per day)</li> <li>