I live overseas but wife received following via snail mail. Is it worth pursuing? She has miles on CO so gaining miles is good as UA has flight from SIN to the US via NRT and HKG. Miles would be used for business class seats.

We won't hit the 25k spend as we use chase Sapphire for our overseas transactions which is 95% of our spending.

25,000 mi after first purchase. 5000 addtional miles after your first usage AND you add an addtional person within 2 months. First year annual fee waived (95.00) First free checked bag. Addtional 10,000 miles when you spend $25,000.