The postal system in Phuket is relatively reliable. In addition to regular mail, airmail, and sea mail, services such as International Express Mail Service (EMS) are available, allowing you to choose according to your needs. For important documents or packages, using EMS is recommended, as it provides online tracking.
For regular mail, writing [JAPAN] prominently in English on postcards or envelopes is sufficient, and addresses or names can still be written in Japanese. For registered mail like EMS, English is required on the designated forms.
Placing mail in street mailboxes can result in significant delays, so visiting a post office is the best option. Some department stores or commercial centers have postal branches, and hotel front desks may also accept mail, so please check in advance.
Typically, international mail takes 1 to 2 weeks to reach Japan. Postage varies depending on size and weight.

Additionally, domestic delivery services such as KERRY, FedEx, and Flash have many locations, and SPEED-D service, available at 7-Eleven for sending and receiving parcels, is also very convenient.