Preuzeću pošiljku danas.

Because this is a Serbian future-tense form.

The verb is preuzeti (to take over / pick up / collect), and the future is made with the short form of hteti (ću = I will).

When the infinitive comes right before that short future form, Serbian usually joins them into one word:

• preuzeti + ću → preuzeću

You can also say:

• Ja ću preuzeti pošiljku danas.

That means the same thing, but in your sentence the future form is simply attached to the verb.

Serbian often leaves out subject pronouns when they are already clear from the verb ending.

In preuzeću, the ending already tells you it means I will. So ja is unnecessary unless you want emphasis:

• Preuzeću pošiljku danas. = neutral
• Ja ću preuzeti pošiljku danas. = slightly more emphatic on I

This is very common in Serbian.

Because pošiljku is the accusative singular, and this noun is the direct object of the verb.

• pošiljka = nominative singular (a shipment / parcel)
• pošiljku = accusative singular

Since preuzeti takes a direct object, Serbian uses the accusative here:

• Preuzeću pošiljku danas.

For many feminine nouns ending in -a, the accusative singular ends in -u.

Pošiljka means something like shipment, consignment, delivery, or parcel, depending on context.

In everyday English, the most natural translation is often package or parcel, but pošiljka is a bit broader than paket.

• paket = package / parcel
• pošiljka = shipment, mailed item, delivery item, parcel

So in a postal or courier context, pošiljka is very natural.

Not always. Preuzeti is a broad verb whose core idea is to take over / take charge of / receive / collect.

Its exact meaning depends on context:

• preuzeti pošiljku = pick up / collect a shipment
• preuzeti odgovornost = take responsibility
• preuzeti firmu = take over a company
• preuzeti fajl = download a file

So in this sentence, because the object is pošiljku, the meaning is pick up / collect.

Because the sentence refers to a single completed action: picking up the shipment.

The verb preuzeti is perfective, and perfective verbs are very common when talking about one whole action that will be completed in the future.

So:

• preuzeću = I will pick it up / I will collect it as a completed event

An imperfective verb would sound different and would usually suggest repetition, process, or habit rather than one completed pickup.

Yes. Serbian word order is fairly flexible, and you can move parts of the sentence to change emphasis.

For example:

• Preuzeću pošiljku danas. = neutral
• Danas ću preuzeti pošiljku. = emphasis on today
• Pošiljku ću preuzeti danas. = emphasis on the shipment
• Ja ću danas preuzeti pošiljku. = emphasis on I

All of these can be correct.

The main thing to remember is that when ću is written separately, it behaves like a clitic and usually comes near the beginning of the clause. That is why Danas ću preuzeti pošiljku is good, but Danas preuzeti ću pošiljku is not standard.

Yes, absolutely.

That version is completely natural and means the same thing. The difference is mostly in structure and emphasis:

• Preuzeću pošiljku danas. = compact, neutral
• Ja ću preuzeti pošiljku danas. = slightly more explicit, with ja adding emphasis if needed

Both are standard Serbian.

A rough guide:

• preuzeću = pre-u-ze-ću
• pošiljku = po-šilj-ku

Useful sound notes:

• š sounds like English sh
• ć is a soft sound somewhat like a very soft ch, but paler/softer than English ch
• lj is a single soft l sound, somewhat similar to the lli sound many English speakers hear in million, though it is not exactly the same

So a rough English-friendly approximation would be:

• preuzeću ≈ preh-oo-ZEH-chu
• pošiljku ≈ po-SHEEL-kyoo

Those are only approximations, but they are useful for getting close.

It is neutral and perfectly natural.

The sentence sounds like something you might say:

• in a message
• on the phone
• at a post office or pickup point
• in communication with a courier service

The noun pošiljka is a little more general or service-oriented than paket, but it is still very normal in everyday use.