My 90 Day Report-By Date, by my calculation, is Saturday 23 June (arrived in Thailand 26 March).   I have read a couple of  guidelines which state that you need to post your package in 15 days before the report-by date (which checks with the official slip which Immigration gave me some time previously).

But I also have a note suggesting Ubonjoe said the package needed to be with immigration 7 days before the report-by date. 

Am I too late to post it?

Thanks, 

 

Needs to be received at immigration between 15 -7 days before due date.

Register out and a 3 baht stamp on return envelope. 

 

Have you you tried online?