We had a discussion at a previous software company I worked at regarding credits for outages. We were debating whether to give out credits automatically or to send an email with a link to get your credits (like Netflix did). We went with giving credits automatically. I'd be curious to hear opinions on both approaches and why other businesses went one way or the other regarding credits.
I don't see many people coming to a conclusion of "They are going to make me click a link in order to get my deserved discount? Give me a break."
Also, if only %80 percent claim it, then you saved yourself around half a percent of lost revenue (20% of 3% discount)