My cruise related TA's have still been sending promo emails. I'm actually enjoying the reduction in physical junk mail (my USPS courier has been kept busy with online order deliveries). I had to follow up on a cruise refund and a TA whom I dealt with a few years ago recognized my name when it came up via email/voicemail. She now works in marketing for the same agency but has been helping out with customer support since they have an overwhelming amount of change requests to follow up on. Perhaps these types of physical promo mailings are good for a certain demographic but they may be closer to the age screening cutoff. I think many companies have cutbacks or furloughs for some of the non-essential US staff, too.

You can try following their social media accounts where it's also easy enough to unsubscribe if you don't find the content interesting.

ETA: "Fit to Travel" is no longer recommended by CLIA. I'm going to guess that it impacted sales and consumer confidence negatively, not that they have really solid protocols of reducing risk for the most at risk groups who decide to book, yet.