Letter

A letter serves for sending communications within the Slovak Republic and abroad.

You can use it for:

sending letters, letters for blind, direct mail (within Slovak Republic),
communications can be sent on any kind of physical media (paper, card, CD, DVD).

Transit time	Letters within the Slovak Republic: 1st Class Letter - D+1 (delivery on the next working day after the day of posting), 2nd Class Letter - D+2 (delivery on the second working day after the day of posting) Letter for blind - D+2 (delivery on the second working day after the day of posting), Direct mail - D+4 (delivery on the fourth working day after the day of posting), Letters abroad: assumed transit times of letters addressed abroad depend on a respective country of destination
Weight	up to 2 kg
Size	Letter of regular shapes: minimum: 14 x 9 cm maximum: 25 x 35 x 3 cm (letters within the Slovak Republic) sum of total length, width, and thickness shall be max. 90 cm, while the biggest dimension shall not exceed 60 cm (letters abroad)
Method of payment	cash, postage stamps, bank transfer, postage credit, franking machine

Sender	Letters within the Slovak Republic: Reply service, Withdrawal of an Item, Return to Sender immediately, Do not redirect, Return to Sender after ... days, Do not return, Back Letters abroad: Reply service (up to 50 g to all countries, above 50 g to shortlisted countries), Withdrawal of an Item, Do not redirect, Poste restante
Addressee	Time Redirection

A letter can be sent without any wrapping (postcard, picture postcard) or in wrapper (you can buy it at the post office directly – e. g. envelope).
If you send small articles by letter, they shall not stick up from wrap.
For an expedite transit time, mark the item with the note "1. trieda" (for items abroad with the note "1st Classe") or aks for this category at the post office.
You shall post the letter at a counter at a post office or put it in a post-box of Slovenská pošta.

You can find prices for letters here.