eki ni tuitara, gorenraku itadakemasu ka.

A word-by-word breakdown is:

• 駅 = station
• に = to / at
• 着いたら = when/after arriving
• ご連絡 = contact / message / communication (polite form)
• いただけますか = could you do ... for me? / would you be able to ... ?

So the whole sentence means something like:

Could you contact me when you arrive at the station?

A very literal sense is:

When you arrive at the station, could I receive your contact?

That literal phrasing sounds unnatural in English, but it helps explain the Japanese structure.

This is a very common point of confusion.

The pattern ～たら is made by attaching ら to the plain past form of a verb. So:

• 着く = to arrive
• 着いた = arrived
• 着いたら = if/when/after arriving

Even though it uses the past form, ～たら is often used for future situations in Japanese.

Here, 駅に着いたら does not mean if you had arrived. It means:

• when you arrive
• after you arrive

So the past form here is just part of the grammar pattern, not a sign that the event is already in the past.

It can mean either if or when, depending on context.

In this sentence, when is the natural meaning because arriving at the station is expected to happen. The sentence is describing the next action after that event.

So:

• 駅に着いたら = when you arrive at the station

If the situation were less certain, ～たら could sound more like if.

Because 着く normally takes に to mark the destination.

So:

• 駅に着く = to arrive at the station
• 家に着く = to arrive home
• 空港に着く = to arrive at the airport

For learners, it is helpful to remember 着く + に as a standard pattern.

連絡 means contact, communication, or getting in touch. It can be used as a noun, and it can also be part of the verb 連絡する = to contact.

The ご adds politeness and respect. So ご連絡 is a polite way to refer to the other person’s contacting you.

Compare:

• 連絡 = contact
• ご連絡 = polite/formal contact

This kind of ご is very common in business Japanese and polite requests.

いただけますか is a very polite request form.

It comes from いただく, which is the humble equivalent of もらう (to receive). In request sentences, it often gives the sense of:

Could I receive the favor of you doing X?

So:

• ご連絡いただけますか literally = Could I receive your contacting me?
• natural English = Could you contact me?

This sounds polite, indirect, and respectful.

It is softer than directly telling someone what to do.

Because ご連絡いただけますか is a common polite set pattern.

In polite Japanese, you often see:

• ご連絡いただけますか
• ご確認いただけますか
• お待ちいただけますか

In these expressions, the お/ご + noun or verbal noun + いただく structure works naturally without explicitly adding を.

For learners, it is easiest to treat ご連絡いただけますか as a standard polite expression meaning:

Could you contact me?

It is quite polite and very natural in formal situations.

Here is a rough comparison:

• 連絡して。 = Contact me.
  Very casual.

• 連絡してください。 = Please contact me.
  Polite, but fairly direct.

• ご連絡ください。 = Please contact me.
  More formal.

• ご連絡いただけますか。 = Could you contact me?
  Polite, softer, and more indirect.

So the sentence you gave is especially suitable for:

• business situations
• speaking to customers
• speaking to someone you want to be respectful toward

Japanese often leaves the subject unstated when it is clear from context.

In this sentence:

• the person who arrives at the station is understood to be you (the listener)
• the person who receives the contact is understood to be me or my side

So the full sense is something like:

When you arrive at the station, could you contact me?

Even though Japanese does not say you or me explicitly, the meaning is usually clear from the situation.

It would sound a little formal with close friends.

With friends, you would more naturally say something like:

• 駅に着いたら、連絡して。
• 駅に着いたら、連絡してね。
• 着いたら連絡して。

The original sentence is better for polite conversation, work-related messages, or speaking respectfully.

Yes. It is very common in texts, emails, and business messages.

It sounds especially natural in:

• workplace communication
• customer service
• arranging meetings politely

For example, if you are meeting someone and want them to let you know when they arrive, this sentence is perfectly natural.

In a very formal email, you might even see an even softer version such as:

• 駅に着かれましたら、ご連絡いただけますでしょうか。

But your original sentence is already polite and natural.