Save money on ZenDesk

$436 in credits for Zendesk Suite products per month for the first year.

Reach out to startups@zendesk.com with the following: “Fluz asked me to send an email regarding the Zendesk promotion”.
Start a Zendesk Trial (can be a suite trial or something different) in USD. If your trial is not in USD, contact Zendesk. If you already have a current trial, the code applies and can be used.
From inside your Zendesk trial, click the Buy Now button.
Select your chosen plan with monthly billing. The $436 monthly credit works for up to 4 licenses of the Suite, but the code can also apply $436 to any alternative monthly plan selection.
Enter the promo code that was provided to you in step 1 after emailing Zendesk.
Complete the checkout process and note that once your free credit runs out after 12 monthly billing periods, you will be charged for your next month with Zendesk.

Here’s an article that sums it up nicely