Question

3...explain 'certificate of posting' as a specialised mail service of post office??​

Answer 1

Answer:

$\huge\tt\underline {†}\underline\red {Answer}\underline{⇝}$

The certificate of posting serves the only evidence of sending a post for the sender. Registered post makes sure that the posted item reaches the addressee, who signs the acknowledgement card as a receipt. ... Speed post is delivered much faster than normal posts, with extra charges

${\huge{\fcolorbox{pink}{blue}{♡Ren♡}}}$