What documents are required for a 90-day report by post at Bangkok immigration?

And send by EMS at Thai post office. keep receipt so you can track and trace. My last one took quite awhile to be sent back.

To do a 90 day report by mail in Bangkok you need to postmark the envelope 14 days before the due date, and include a stamped self addressed envelope to get the receipt mailed back

Include the following in the packet:

Filled out TM47

previous 90 day report receipt

copies of

data page of your passport

visa/extension

most recent entry stamp

TM 6 departure card

TM30 receipt

Mail it here;

Immigration Office Division 1

Chalermprakiat Government Complex

120 Moo 3 Chaengwattana Road Soi 7

Thungsonghong, Laksi Bangkok