Zoho Mail IMAP Not Working: Every Fix I've Actually Used

Quick Summary Zoho Mail IMAP stops working for the dumbest reasons - wrong port, 2FA blocking app passwords, or DNS that looks fine but isn't. I've fixed this across Outlook 2016, iPhones, Android, and Mac Mail, and the root cause is almost always one of four things. Here's the exact step-by-step with real menu paths so you're not clicking around for two hours like I was the first time. Photo by Juanjo Jaramillo on Unsplash It was a Monday morning. One of our sales guys walks up and says his Outlook stopped pulling emails from Zoho. Just stopped. Overnight. Nothing changed - or so he said. Checked his machine, checked the account settings, everything looked right on the surface. Port 993, SSL enabled, correct email address. And yet. Nothing. Here's the thing - Zoho Mail IMAP issues have this annoying pattern where the settings look correct but something underneath is broken. Could be an app password that got invalidated when someone toggled 2FA. Could be IMAP ac...