I maintain a box at a UPS Store and that's where all my banking, social security information is sent to. Next year I will change that to a virtual office that will scan all of my mail and then I can decide which ones I want to have sent to me here in Thailand
I use an old flip phone that has TracFone contract. I believe it was $60 for the year and it does Wi-Fi calling and texting so I have it set up at home and the only time I use it is what I get a text for two step Authentication