Where can I send an online message to the buyer?

[BaoShengHeYang]

How can I send a message to the buyer? My first order was shipped a little late because I didn't pay attention. I want to contact the buyer and tell him that although it's a little late, the goods have been shipped from China and will arrive in a few days.

[nat_not]

@BaoShengHeYang You can use the Allegro Message Center. Check out how it works here.