暑中お見舞い申し上げます
Meanings
1
midsummer greetings; inquiring after someone's health in the hot season
A formal, humble set phrase used in summer greeting cards or letters. The speaker uses humble language to inquire about the recipient's well-being during the hot season.
See also: 暑中お見舞い
Midsummer greetings. The hot days continue, but I hope you are well.