To prevent unwanted emails from no longer overloading or showing up at all in your Gmail inbox, use these steps:
- Install Block Sender for Gmail by clicking the “Install” button found in the upper right-hand corner of this site. The installation won’t take long. Open Gmail when it is done.
- After signing up for a Block Sender account and linking your Gmail account to Block Sender, open the unwanted email from Booking.com, and click the "Block" button on the messages toolbar.
- Select the "Emails from this sender" option.
Once this is done, you will no longer receive emails from that Booking.com email account. If you ever decide you want to start receiving their emails again you can simply unblock the email.
And since Booking.com does send legitimate emails, you may want to try a different approach and instead block their ad/offer emails using phrase blocking. This would then allow you to receive their legitimate emails as well.