If Gmail keeps sending messages from a certain sender to the Spam folder, you can make it stop by explicitly telling Gmail that the email is safe, which will allow it through the spam filter. You accomplish this in Gmail by whitelisting the address—that is, adding it to the safe senders’ list.
When you set up whitelist address in Gmail, Gmail makes sure it reaches the Inbox folder for you to see. You can whitelist emails in Gmail by making an email filter. It can apply to a specific email address, a whole domain, or a mix of both.
How to set up whitelist address in Gmail
If you expect to receive important emails from a trusted email address it is worth whitelisting the address to make sure that emails won’t be accidentally blocked by an overzealous email client
Step 1: Login to Gmail, click on the gear icon and select “Settings“.
Step 2: Click “Filters and blocked addresses“.
Step 3: Scroll past all your existing filters and select “Create a new filter“.
Step 4: In the From field, type the email address to whitelist.
Be sure to type the full email address, email@example.com. To whitelist every email address from a specific domain, type just that domain name, like @gmail.com, to put every Gmail.com address on the safe list.
Step 5: Click “Create filter” at the bottom of that pop-up window to make the whitelist filter.
Step 6: Check the “Never send to spam” box and click “Create Filter“. The email address will now be whitelisted!
Note: If you want to whitelist more than one email address or domain, you need not repeat these steps for each one. Instead, put a vertical bar (and a space before and after it) between the separate accounts, as follows: firstname.lastname@example.org | email@example.com | @example2.com.
Another method to set up a whitelist address in Gmail
The other option for setting up whitelist filters in Gmail is to do it from the email. If you want to keep all messages from that particular sender out of the Spam folder, you can start the filter from one of the sender’s messages.
Step 1: Open the message.
Step 2: From the three-dotted menu just above the message (the same button used to mark emails as read/unread or as important), click “Filter messages like this“.
Step 3: With the email address now auto-filled for you in the “From” field, create the filter with the “Create filter” button.
Note: When you whitelist an email or domain in Gmail, the filter does not apply to past emails that are already in the Spam or Trash folder. The filter works from the time you enable it onward.
You should avoid putting an entire domain into the safe senders’ list. Whitelisting all Gmail.com addresses, for example, will keep every single email from a Gmail.com address from going to the Spam folder.
>>>> See more: How To Manage Filters In Gmail.