Can I report my 90-day stay in Thailand by mail, and which postage amount should I use?

I do it this way every time. Ensure you use EMS postage and I take photos of the EMS sticker on the addressed envelope. Has never failed once

OR

in Bangkok you can go to Bumrungrad Hospital on the 10th floor business center and they will do 90 day reporting for you for 650 baht

You drop off the passport one day and pick it up a few days later from them

You don't need to be a patient for them to do it

Its just a regular envelope with your address on it and a 10 baht postage stamp

You need to have copies of the following

Data page of your passport

entry stamp

DTV (either the pdf print out or the page in your passport if it's sticker visa)

TM30 receipt

You fill out a TM47, send the copies, the TM47 application form, the self addressed stamped envelope to the main immigration office at Chaengwattana via Thai Post EMS tracked mail

You need to have the packet post marked 14 days before the due date

this is the address where you send it

**𝗔𝗧𝗧𝗘𝗡𝗧𝗜𝗢𝗡 𝟵𝟬 𝗗𝗔𝗬 𝗥𝗘𝗣𝗢𝗥𝗧𝗜𝗡𝗚**

𝗜𝗺𝗺𝗶𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝗗𝗶𝘃𝗶𝘀𝗶𝗼𝗻 𝟭 𝗢𝗳𝗳𝗶𝗰𝗲

𝗖𝗵𝗮𝗹𝗲𝗿𝗺𝗽𝗿𝗮𝗸𝗶𝗮𝘁 𝗚𝗼𝘃𝗲𝗿𝗻𝗺𝗲𝗻𝘁 𝗖𝗼𝗺𝗽𝗹𝗲𝘅 (𝗕 𝗕𝘂𝗶𝗹𝗱𝗶𝗻𝗴),

𝟭𝟮𝟬 𝗠𝗼𝗼 𝟯, 𝗖𝗵𝗮𝗲𝗻𝗴𝘄𝗮𝘁𝘁𝗮𝗻𝗮 𝗥𝗼𝗮𝗱, 𝗦𝗼𝗶 𝟳

𝗧𝗼𝗼𝗻𝗴𝘀𝗼𝗻𝗴𝗵𝗼𝗻𝗴, 𝗟𝗮𝗸𝘀𝗶, 𝗕𝗮𝗻𝗴𝗸𝗼𝗸, 𝟭𝟬𝟮𝟭𝟬