🚀 go-pugleaf

In the SEND TEXT options of the Nokia, I've never used the SEND TEXT
AS EMAIL option. I hesitate to try it in case I get price shock in
the next bill, and I've never seen anyone talk about the facility. 
Is it functional on most networks?

Can it be expected "to just work" out of the box, or does it need
to set up for the particular network or provider? 

Is it the same cost as a standard SMS? Always? Does the email address
get counted in the 160 chars?

Is delivery likely to be more reliable than sending the message as an
SMS to an overseas destination? I figure that once the message hits the
internet, it stands an excellent chance of being delivered, whereas
SMS seems to require a myriad of individual network agreements and
two-way SMS between specific phones is far from guaranteed.

Thanks.