There has been a lot of good mentions so far for permanent solutions on storing secrets securely.. On the other end, I'll chip in on https://onetimesecret.com/

There has been a lot of good mentions so far for permanent solutions on storing secrets securely.. On the other end, I'll chip in on https://onetimesecret.com/ https://onetimesecret.com/ for quickly sharing a secret. It will only allow the consumer to view the secret once, after that, the secret is no longer available. You can also set up One Time Secret with your company domain (self-hosted, I presume)