Sustaining subscriber for one email adress only?

I’m a sustaining Pushtokindle subscriber. My last purchase for a one year subscription was in February of this year. Why do I receive a message about having to purchase «email credits» on my other email? Is the sustaining subscription only linked to one email adress from which I can send articles to Pushtokindle?

Hi Joakim,

Sorry about that, you can use the same code with up to 5 email addresses. Simply enter the code you received by email into the field when you get the email about low/no credit.

You can find your code either by finding the sustainer purchase confirmation email. Or log in at with the email address you used to place the order.

Let us know if you still have trouble.