> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.biginterviewmedical.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Email Delivery: Whitelisting Big Interview Email

Big Interview uses highly reputable email domains to ensure that emails are delivered. However, email delivery can still sometimes fail due to various security systems in between Big Interview and students.

In order to ensure email **deliverability**, Big Interview monitors and acts on spam scores, blacklisting, IP throttling, and more.

In addition to whitelisting IPs and domains, please identify any **internal security limitations** you may have regarding receiving emails and surface them to our Support Team at support@biginterview.com.

### **Whitelist by IP**
We send emails from a dedicated set of IP addresses. Please whitelist all of the following:
* 149.72.130.208
* 198.37.155.82
### **Whitelist by Domain (Optional)**
* biginterview.com
* mail.biginterview.com
* email.biginterview.com
* o2.ptr3529.biginterview.com
### **How to Whitelist if you use Google Apps**
Use the Google Apps Console for Gmail to ensure no messages are flagged as spam. This can be accomplished by following these steps: [https://support.google.com/a/answer/60751?hl=en](https://support.google.com/a/answer/60751?hl=en)
There are also general guidelines for bulk emailing recommended by Google if you are mass emailing using Handshake:[https://support.google.com/mail/answer/81126](https://support.google.com/mail/answer/81126)
### **How to Whitelist if you use Microsoft Office 365**
Administrators can perform whitelisting via the Office 365 admin portal. More information can be found here: [https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/create-safe-sender-lists-in-office-365](https://learn.microsoft.com/en-us/microsoft-365/security/office-365-security/create-safe-sender-lists-in-office-365)
### **Note: Handling 'Focused Inbox' or 'Clutter'**
If an email is missing, it may have been moved to a low-priority folder by Microsoft's automated sorting:
* **Focused Inbox:** Check the **"Other"** tab at the top of your inbox. If our email is there, right-click it and select **"Always Move to Focused."**
* **Clutter Folder:** If your account still uses the older Clutter feature, check the **"Clutter"** folder in your sidebar. Dragging our email to your Inbox will teach the system to prioritize it.
* **More Info:** For detailed steps on managing these folders, see [Microsoft’s Official Guide](https://support.microsoft.com/en-us/office/use-clutter-to-sort-low-priority-messages-in-outlook-7b50c5db-7704-4e55-8a1b-dfc7bf1eafa0).