claude email verification code not sending

Trying to log into claude.ai only to find that the email verification link or one-time code never arrives in your inbox is a frustrating roadblock. Here is how to fix it.

Inspect your spam folder and mail filters

Automated transactional emails from Anthropic are frequently flagged by aggressive spam filters. Check your "Spam", "Junk", and "Promotions" folders first. If you are using an enterprise or educational email account, the network's inbound firewall may block emails containing dynamic login links. Try whitelisting the domain anthropic.com or support.anthropic.com within your email client settings before requesting another code.

Avoid temporary or high-security domain email addresses

Claude blocks temporary, disposable, or highly anonymous email providers to prevent bot abuse. If you are using a custom domain or a lesser-known mail provider, the system may silently fail to send the verification code. Using a mainstream provider like Gmail, Outlook, or ProtonMail offers the highest success rate when signing up for an account.

Switch to Google or Apple direct authentication

If you originally registered your account using the "Continue with Google" or "Continue with Apple" options, requesting a manual email code will not work as expected. Go back to the login screen and click the direct Google or Apple authentication button. This bypasses the email code system entirely, authenticating your session instantly via your third-party account credentials.

Clear your browser cache and retry the request

Sometimes the browser gets stuck in an expired session loop, preventing the code request from reaching Anthropic's servers despite showing a countdown timer. Clear your browser history, delete cookies, or try requesting the login code using an Incognito or Private browsing window. For app-specific login issues, see our solutions when the Claude app won't load to reset the login interface.

Monitor Anthropic platform outages

If you have tried the steps above and still receive no email, the issue might be on Anthropic's side. Severe traffic spikes or underlying database outages can queue email delivery systems, causing delayed or dropped verification codes. If you suspect a platform-wide issue, you can check if the system is experiencing server difficulties by reading about the Anthropic API 529 overloaded error to see if backend systems are currently offline.