# Email OTP not delivered **URL:** \ **Category:** Embedded Wallets (Web3Auth)\ **Created:** [December 30, 2025, 2:59am UTC](https://builder.metamask.io/t/email-otp-not-delivered/2765 "2025-12-30T02:59:55Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/metamaskbuilderhub/original/1X/082cfc3a14103b01cfa5ef7d85f1121a23fa3e81.png) [@system](https://builder.metamask.io/u/system)\ **Post date:** [December 30, 2025, 3:02am UTC](https://builder.metamask.io/t/email-otp-not-delivered/2765/2 "2025-12-30T03:02:26Z")
Hi Aby — thanks for the clear report and for flagging this for Avici users. I’ve pulled the important details so the support team can act quickly and to help us troubleshoot: Summary (from your message) - SDK: MetaMask Embedded Wallets (Web3Auth) - Web3Auth Flutter SDK: web3auth\_flutter: ^6.3.0 - Platform: Flutter - Issue: Passwordless Email login — OTP emails not being delivered to many users - You prefer to share sensitive details (emails/timestamps) via DM — understood. What I’ll need from you (so we can escalate / investigate) - Code snippets: your Web3Auth initialization and the email/passwordless login call (loginSnippet + initialization). Please paste the minimal relevant code (no secrets). - Device/console logs: Flutter/device console logs showing the network request/response when the OTP request is made. If you can’t paste logs publicly, please DM or open a private support ticket. We need the HTTP response body/status if available. - Network traces / screenshots: a screenshot of the network request to the Web3Auth endpoint (or your backend) and the response (or a HAR) if available. - Examples and timestamps (private): 2–3 example email addresses + exact timestamps when the OTP was requested and whether any bounce/spam notices were received. - Clarify if you’re using Web3Auth’s hosted email/OTP service or a custom SMTP/email provider configured for Web3Auth (enterprise/customizer). - Are the failures limited to certain email domains (Gmail, Yahoo, corporate domains), regions, or ISPs? Any pattern helps. Quick troubleshooting steps you can try now - Ask affected users to check Spam/Junk and email filtering rules; sometimes OTPs are delayed or filtered. - Confirm you’re using the correct clientId / network configuration in the Flutter init and that the SDK is up-to-date (6.3.0 noted). If possible, try reproducing with another test account. - Capture the network request/response from the client (or server) and check HTTP status codes and any error messages returned by Web3Auth. - If using a custom email provider, verify sender domain/SPF/DKIM/DMARC and check the email provider’s logs for bounces or blocks. - Check for rate limiting or quota issues (sudden spike in OTP requests can trigger throttling). Relevant docs - MetaMask Embedded Wallets (general): [Wallet API introduction | MetaMask developer documentation](https://docs.metamask.io/guide/embedded-wallets.html) - Web3Auth Flutter docs / quick start (for code patterns and config): [404 Page Not Found | Documentation | Web3Auth](https://web3auth.io/docs/sdk/flutter/overview) Next steps - If you can DM the code snippets, logs, and 2–3 sample emails + timestamps, I’ll escalate this to the support team and ask them to check delivery logs and bounce reasons. - If you prefer, open a private support ticket and include the same artifacts. I’ll hold here and escalate as soon as you share the private logs/snippets. Thank you — we’ll get this sorted for your users. > Note: This response was generated by an AI bot and may require further verification. The MetaMask Community Team has tracked this issue and will be responding as soon as possible. > Additionally, we would recommend you to join our biweekly Office Hours to get this resolved even faster. [MetaMask Developer Office Hours](https://builder.metamask.io/t/metamask-developer-office-hours/2544/1) --- _[View the full topic](https://builder.metamask.io/t/email-otp-not-delivered/2765)._