To whitelist BitMart emails, you can follow these instructions:

Official Email:

1. emx@bitmart.com
2. emx@bitmart.io 
3. do_not_reply@emx.bitmart.com
4.  noreply@bitmart.com

For Outlook:

1. Log in to Outlook (web) and click on "Settings" (the gear icon) and then click on "View all Outlook settings."
2. Go to "Mail" > "Junk email" and find "Safe senders and domains."
3. Add the official email above to the list and click "Save."

For Gmail:

1. Log in to your Gmail account and click on "Settings" (the gear icon) at the top right corner, then select "See all settings."
2. Go to "Filters and Blocked Addresses" and click on "Create a new filter."
3. In the "From" field, add the official email above to the list and click "Save." Then click "Create filter."
4. Check the box next to "Never send it to Spam," then click "Create filter."

These steps will ensure that emails from BitMart are not flagged as spam and are delivered to your inbox correctly.