Code Grabber watches your Gmail for verification codes and offers to drop the right one into the page you're on — read-only access, and nothing gets filled in without you saying yes.
No background magic — just a quick check of recent mail, a guess at the code, and a question before anything touches your form.
About once a minute, Code Grabber checks messages from the last day for anything that looks like a verification code, OTP, or PIN.
If it finds one, a small card shows up in the corner of the tab you're using — with the code and where it came from.
Use this code fills it into the field you were typing in. Not that code just dismisses the card. Nothing is automatic.
This isn't on the Chrome Web Store yet, so it's installed the same way developers test extensions — Chrome calls this "loading unpacked." It takes about ten minutes, mostly spent in Google Cloud Console setting up your own Gmail access.
Download email-code-autofill.zip above and unzip it. You'll get a folder called email-code-autofill — keep it somewhere permanent, like your Documents folder. Don't delete it after installing; Chrome reads from this folder directly.
Open chrome://extensions, turn on Developer mode (top right), then click Load unpacked and select the email-code-autofill folder.
Click the puzzle-piece icon near your address bar, find Code Grabber in the list, and click its pin icon so it's always one click away.
Gmail access has to come from a connection tied to you, not a shared one. On the extension's card in chrome://extensions, copy the ID shown — you'll need it for the next part.
Click the Code Grabber icon, choose Connect Gmail, and sign in. From then on, codes will show up automatically — or click Check for a code now any time.