Troubleshooting: Errors with Adding an Inbox

The process of adding an inbox for sending in Quickmail depends on the type of email account. 

For Gmail and Outlook inboxes, it can be done by simply signing in using the Google or Microsoft account.

On the other hand, adding Custom Inboxes can be more tricky as it requires manually setting up the IMAP & SMTP Settings. 

Depending on the email provider or how IMAP & SMTP Settings of the inbox are set up, some issues may be encountered when adding an inbox.

Here are the common errors with adding an inbox and how to fix them:

Error: Network error: Unexpected token < in JSON at position 0

Reason 1: Wrong Port Number, Credentials, or Server Address used.

• Try changing the port number (We only support TLS & SSL)
• Make sure that the login credentials used are correct. Some email provider requires generating a special password when using third-party apps.
• Check help articles or reach out to your domain provider to verify if the correct Server address is used. 

Reason 2: IMAP Settings is not enabled. 

• Some email providers require a paid subscription for IMAP. Make sure that IMAP settings are enabled. 
• If unsure, reach out to your email provider.

UID SEARCH Backend error

Reason 1: This is a known error that's coming from Yandex's IMAP server.

• Apparently, there's no fix provided yet by Yandex. Reach out to Yandex to look for a new possible fix. 
• A workaround to add an inbox from Yandex is to add it as a Gmail or Outlook inbox. This can be done by signing up for a Gmail or Outlook account and use the email address bought from Yandex. 

Unknown Mailbox: [Gmail](now in authenticated state)(Failure)

Reason 1: We have Gmail integration. Gmail inboxes can't be added by manually setting up IMAP & SMTP settings

• To add a Gmail inbox, simply sign in using Google. 
• If there's a need to use different SMTP settings, add the inbox by signing in to Gmail first, and then set up a custom SMTP.  Here's a guide on how to set up a custom SMTP.

Cannot Connect to Server (Does not match the server certificate)

Reason 1: Wrong Port Number, Credentials, or Server Address used.

• Try changing the port number (We only support TLS & SSL)
• Make sure that the login credentials used are correct. Some email provider requires generating a special password when using third-party apps.
• Check help articles or reach out to your domain provider to verify if the correct Server address is used. 

Reason 2: SMTP Settings is not enabled. 

• Some email providers require a paid subscription for SMTP. Make sure that SMTP settings are enabled. 
• If unsure, reach out to your email provider.

535-5.7.8 Username and Password not accepted

Reason 1: Invalid username and password is used

• Double check username and password used
• Verify if account is not disabled

Reason 2: Less Secure Apps is not enabled

• Make sure they are enabled by checking the settings in these links:
  • Less Secure Apps (Admin Side):https://admin.google.com/ac/security/lsa
  • Less Secure Apps (Inbox Side):https://myaccount.google.com/lesssecureapps?pli=1
• If Less Secure Apps is enabled, try disabling and re-enabling it

Email already exists in QuickMail, contact support@quickmail.io to resolve this

Reason 1: This means that the inbox has already been added to a different account. An inbox can't be used in multiple accounts at the same time. 

• The inbox must be deleted from an old account to add it to a new account. 
• Contact support@quickmail.io if you're unable to locate or delete the inbox from your end