I stayed in Thailand for 1 year on an ED visa and left without cancelling it. I stayed in my home country for 2 months and got dtv visa and came back to bkk. No issue arose when I went through the immigration at the airport(29th March, this year).
I want to try by mail but I think I will be anxious whether it has been successfully received by the office and got on the process.😥 Is it possible to check how my mail is being processed?