It happened to me for several weeks in a row. I thought I wasn't getting my confirmation emails, but realized they were going straight into the trash bin. I guess I somehow accidentally blocked the sender [email protected].

On my Apple device, I went into Settings > Mail > Blocked and then I scrolled through the long list of blocked contacts until I found the Marriott address and unblocked it. I am now getting my confirmation emails again.

Welcome to FT!