I. If you fail to receive the registration verification email after submitting your email address on the Jadens Printer App, please follow all the troubleshooting steps below in order:

1. Double-check your input email address

Confirm there are no typos of letters, symbols, dots or domain suffixes. One wrong character will lead to mail delivery failure directly.

2. Check spam/junk/promotion/trash folders of your mailbox

Most mainstream mail providers (Gmail, Outlook, Yahoo, Hotmail) automatically identify system automated mails as advertising spam and filter them out of your main inbox. Please fully check all secondary folders. 
3. Add our official service email to your whitelist (critical step)

It is highly possible that your mailbox system has automatically blocked our official sending address, which explains why you cannot receive both registration verification codes and our after-sales reply emails.

Add our official service mailbox to your contact whitelist first; this will lift the interception restriction for all follow-up system emails and customer service replies.
4. Avoid clicking "Resend Code" repeatedly within 5 minutes

Continuous requests in a short time will trigger the anti-spam limit of our mail server, causing a long delay or complete suspension of mail dispatch. Please wait at least 15 minutes before resending.
5. Switch network environment and resend the verification mail

Unstable Wi-Fi or mobile data may interrupt the mail request transmission between your device and our server. Toggle between Wi-Fi and cellular data, then tap resend.

6. Try another mailbox if the issue persists

Some regional mailboxes have strict anti-spam rules that easily block third-party system emails. You can register with Gmail, Outlook or Yahoo instead for a higher delivery success rate.

II. If you have completed all steps above and still never receive verification emails or our customer service replies:
Your mailbox may have fully blacklisted our official sending address on the server side, which blocks all incoming mails from us automatically.
We cannot adjust your mailbox’s internal interception settings remotely. You can either thoroughly clean your mailbox blocklist and whitelist our service email again, or switch to a new email account to finish App registration.