"While you can allow people to pay you with Paypal or Bitcoin, these softwares are not set up for recurring payments."<p>FYI:
<a href="https://www.paypal.com/pdn-recurring" rel="nofollow">https://www.paypal.com/pdn-recurring</a>
<a href="https://coinbase.com/docs/merchant_tools/recurring_payments" rel="nofollow">https://coinbase.com/docs/merchant_tools/recurring_payments</a>