* By ship: The most common way for mail to get to Antarctica is by ship. There are a number of shipping companies that offer service to Antarctica, and they typically make deliveries once or twice a year. The ships usually leave from ports in Argentina, Chile, or New Zealand.
* By air: Mail can also be sent to Antarctica by air. There are a few airlines that offer service to Antarctica, and they typically fly from airports in Argentina, Chile, or New Zealand. The flights are usually very expensive, and they are only available during the summer months.
* By satellite: Mail can also be sent to Antarctica by satellite. This is the most expensive option, but it is also the fastest. The mail is sent via a satellite link to a ground station in Antarctica, and then it is delivered by post.
Once mail arrives in Antarctica, it is typically sorted and delivered by the local post office. The post offices in Antarctica are usually located in the research stations, and they are open during the summer months.