Śledzę przesyłkę.

Roughly:

• Śledzę → SHLEH-dzeh
• przesyłkę → pshe-SIHW-keh / pshe-SIHW-ken depending on how strongly you nasalize the last vowel

A few key sounds:

• ś is a soft sh sound
• prz at the start of przesyłkę sounds roughly like psh
• ł sounds like English w
• ę changes a bit depending on position:
  • at the end of śledzę, it is often only lightly nasal, sometimes almost like plain e
  • before k in przesyłkę, it sounds more nasal

Stress is on the second-to-last syllable:

• ŚLE-dzę
• prze-SYŁ-kę

Śledzę is the 1st person singular present tense form of śledzić.

So grammatically it means:

• I track
• I am tracking

The ending -ę tells you the subject is I.

Because śledzić is the infinitive form, and Polish verbs change form when conjugated.

This verb follows a common pattern for verbs ending in -ić:

• śledzić → infinitive
• śledzę → I track
• śledzisz → you track
• śledzi → he/she/it tracks

So śledzę is just the normal present-tense I form of this verb.

Because it is the direct object of the verb, so it appears in the accusative case.

Dictionary form:

• przesyłka = shipment / parcel

In this sentence:

• Śledzę przesyłkę = I am tracking the shipment

For many feminine nouns ending in -a, the accusative singular changes to -ę:

• książka → książkę
• kobieta → kobietę
• przesyłka → przesyłkę

Because Polish usually omits subject pronouns when they are already clear from the verb form.

• śledzę already means I am tracking
• so ja is unnecessary in a neutral sentence

You can add ja for emphasis or contrast:

• Ja śledzę przesyłkę, a ty nie.
  I’m tracking the shipment, but you aren’t.

It can mean either, depending on context.

Because śledzić is an imperfective verb, the present tense can express:

• an action happening now: I’m tracking the shipment
• a repeated/general action: I track shipments

In real-life context, if someone says Śledzę przesyłkę, people will usually understand it as I’m tracking the shipment.

Yes, śledzić can mean several related things:

• to follow
• to track
• to monitor

With przesyłkę, it is completely natural and standard. It usually means tracking the shipment status, for example through a courier or postal system.

So in this context, it does not sound strange.

Yes. Polish word order is more flexible than English word order.

The most neutral version is:

• Śledzę przesyłkę.

But you could also say:

• Przesyłkę śledzę. — puts more focus on the shipment
• Ja śledzę przesyłkę. — puts more focus on I

Even when the order changes, the case ending -ę on przesyłkę still shows that it is the object.

They overlap, but they are not exactly the same.

• przesyłka = a shipment / mailed item / consignment; broader and a bit more official
• paczka = a package / parcel, often more everyday

In tracking contexts, przesyłka is very common because courier and postal systems often use that word.

So both of these can work:

• Śledzę przesyłkę.
• Śledzę paczkę.

But przesyłkę often sounds a little more like the wording used on delivery websites or apps.