How to treat the phenomenon of sending short messages in groups during holidays?

Due to the traditional virtues of the Chinese nation, I miss my relatives twice every festive season. In ancient times, we basically visited at home. Now, we are advanced, and we all communicate through mobile phones. There are so many friends that I can't greet them one by one, so I have to greet them by sending short messages in groups. This is normal. This has become people's habit, and now many people use WeChat to send blessing messages.