That’s a really nice decent idea, so I raise something, I built best-tempmail.com as a temp mail service focused on getting the basics right. Many temp mail services, even big ones, have poor email setups, which can cause messages to never arrive. So I made sure everything is properly configured:
You can check any domain on MXToolbox to see clean results. Good email setup means better delivery and fewer missed messages. It’s not flashy, but it’s what makes the service actually work. Furthermore, I’ve also added 45 free professional grade developers tool.