I know "goblins" works for new domain registrations, but does a code exist for renewals? Thanks in advance.
Namecheap does not offers discount for renewals with coupons or without. They actually never did apart from a few days during their recent anniversary.
Actually that is not true. I contacted them before renewing about 100 domain names and was able to get a coupon code for renewals, so I'd recommend sending them a quick e-mail if you're doing any kind of volume.
The magic number seems to 50. If you have 50 or more domain names to renew, send them an email and they'll give you a discount code.
That's bulk renewal and not the same as the coupons for transfers or sign up which are currently available for those who have fewer than 50 to register.