Didn't see anything about this on the forum.  It might be something covered in Yankale's book, I don't know.

One aspect of resupply for most thru hikers in the US is via package delivery. 

In the US this is done one of two ways:

1. General delivery at  post office.  You mail a package to your own name.  It would be address like this:

John Smith

General Delivery - Hold for AT Thru Hiker  

Anytown,  XX 12345

Then the hiker goes to the post office with id (drivers licence or passport) and claims the package.

2. The other method is to mail it to a business or trail angel  who receives it and holds it for the hiker.  Most often this is hostels, but some outfitters do this as well.  Some charge a small fee, most do it for free.  Some hostel or motels will only do it for people who have reservations some will do it for all hikers.  Varies quite a bit.  This is often the preferred way to receive a package for several reasons.  Post offices have more limited hours than hostels, hostels are often closer to the trail, and you can use other delivery services such as UPS or Fedex which are considered more reliable than the post office (but are also slightly more expensive) 

Hikers use one of two approaches (a few do both):  Mail drops and bounce boxes. 

Mail drops -  require a support person back at home as places are not willing to hold packages for months at at time.  Some one from home mails the hiker stuff along the way.  Some folks  buy all their food at discount wholesale warehouses for the entire hike before hand, buying little or no provisions along the way.  Others might have as few 2 or 3 mail drops, primarily to swap out gear, when the weather turns from winter to summer or summer to winter, buying all their supplies along the way.  IMHO it makes to have a mail drop in towns with small expensive convenience stores but not in town with full service reasonably priced grocery stores.  Most people will chop up even their 4 oz data book into sections only carrying the section until the next mail drop.  This is prohibitively expensive for an international hiker who support folks are in a different country. 

Bounce box - hiker mails the same box to himself/herself, receiving it and resending it about once a week.  The bounce box is used to store anything needed on the hike as whole, but not that particular section.  E.g. bug net during cold weather, down parka during warm weather, maps and databook sections for all but the current section, completed journal pages, etc.  Also some food either because the next town doesn't have a good store or because you bought more than you immediately need (full size bottle of cooking oil, multipack of batteries, etc. Pretty much anything but cooking fuel (which while legal to mail requires a bunch of extra steps that are a PITA)

If feasible I would like to do a bounce box on the INT.

My questions are:

1. Does Israel postal service offer something akin to US postal service's general delivery?

2. If yes, is data regarding post offices near the trail in Yankale's book? (distance from trail, hours, directions, postal code)

3. Are trail angels generally receptive to holding packages for hikers?

4. Is the Israel postal service reliable or is it better to go with an alternate provider? (UPS, FedEx, DHL in USA - don't know which one exist in Israel)

5. Is this a reasonable cost option in Israel or prohibitively expensive? 

I know that over the years USA's postal restriction have gotten more strict for security reasons (Unibomber, anthrax) so it would not surprise me if Israel had more restrictions due to its greater security threat problems making this difficult or impossible to send or recieve packages somewhere you don't live.