Стоит мне увидеть пустое поле «Получатель», как я сразу проверяю адрес ещё раз.

Here стоить is part of a set pattern, not the everyday to cost meaning.

The construction Стоит + dative + infinitive, как + clause means:

• as soon as ...
• the moment ...
• it only takes ... for ... to happen

So:

• Стоит мне увидеть пустое поле «Получатель», как я сразу проверяю адрес ещё раз.

means something like:

• The moment I see an empty To field, I immediately check the address again.

This pattern often expresses an automatic or predictable reaction.

You may also see a very similar version with только:

• Стоит мне только увидеть ..., как ...

That adds the sense of all it takes is for me to see ...

Because this construction requires the person involved to be in the dative.

So:

• мне = to me / for me
• ему = to him
• нам = to us

Examples:

• Стоит мне начать, как... = As soon as I start, ...
• Стоит ему войти, как все замолкают. = As soon as he walks in, everyone falls silent.

So мне is not the subject of увидеть in the usual nominative way; it is part of this idiomatic pattern.

It is an infinitive because the construction is:

• Стоит + dative + infinitive

So after стоит мне you expect an infinitive, not a conjugated verb.

The verb is увидеть, which is perfective, because it refers to a single completed event: catching sight of / noticing something. That completed moment triggers the next action.

Compare:

• видеть = to see, to be seeing, to have the ability/habit of seeing
• увидеть = to see/notice at a particular moment

In this sentence, the idea is:

• once I notice the empty field ...

So увидеть is the natural choice.

It is in the accusative. The reason it looks the same as the nominative is that поле is a neuter inanimate noun.

After увидеть, the direct object goes in the accusative:

• увидеть что? → пустое поле

But for many neuter inanimate nouns, nominative and accusative have the same form:

• nominative: пустое поле
• accusative: пустое поле

So the case is correct; the form just does not change.

Получатель is functioning as a label or field name shown in an interface, like the text written on a form.

So поле «Получатель» means:

• the field labeled Recipient
• the Recipient field

Because it is being given as the exact label, it is usually left in its quoted form and not declined as part of the sentence.

This is very common with interface labels, button names, menu items, and so on.

Because this sentence contains two clauses joined by the fixed pattern:

• Стоит ..., как ...

The first clause is:

• Стоит мне увидеть пустое поле «Получатель»

The second clause is:

• я сразу проверяю адрес ещё раз

Russian separates these clauses with a comma, so the comma before как is required.

Also, как here does not mean how. It is part of the correlative structure стоит ..., как ...

Because the sentence describes a habitual reaction or a repeated pattern, not one single future event.

So проверяю is present-tense imperfective, and here it has a general meaning:

• whenever this happens, I check again

In English we often do the same thing with the present tense:

• When I see X, I check Y.

If you used проверю, it would sound more like one specific future occasion:

• As soon as I see it, I will check it again.

But this sentence is about a regular, automatic behavior, so проверяю fits better.

Ещё раз literally means one more time.

So:

• проверяю адрес ещё раз = I check the address one more time / again

It is similar to снова, but the nuance is slightly different:

• ещё раз emphasizes an additional repetition
• снова just means again/anew

In this sentence, ещё раз sounds very natural because checking an address is the kind of action you do one more time.

Yes. A very natural alternative would be:

• Как только я вижу пустое поле «Получатель», я сразу проверяю адрес ещё раз.

That also means:

• As soon as I see an empty Recipient field, I immediately check the address again.

The difference is mostly stylistic:

• Как только ... is straightforward and very common.
• Стоит мне ..., как ... is a bit more expressive and can suggest an almost automatic trigger-response relationship.

So the original sentence feels slightly more vivid.

Russian word order is flexible, but in this idiomatic construction the usual order is:

• Стоит мне увидеть ..., как ...

That is the most natural arrangement.

You might see small variations for emphasis, but стоит мне + infinitive is the standard shape. Moving мне around would usually sound less natural unless there is a very specific reason for emphasis.

So for a learner, it is best to treat Стоит мне увидеть as a chunk.

Сразу means:

• immediately
• right away

It shows that the checking happens without delay.

So:

• я проверяю адрес ещё раз = I check the address again
• я сразу проверяю адрес ещё раз = I immediately check the address again

It reinforces the idea that seeing the empty field triggers an instant reaction.

Here it means a blank input field in a digital or paper form, not a physical field like a field of grass.

In Russian, поле is commonly used for:

• a field in a form
• a text box
• an entry area in an app or website

So пустое поле «Получатель» means the Recipient field is blank or unfilled.

Yes, it sounds natural.

It is a good example of:

• an idiomatic trigger construction: Стоит мне ..., как ...
• a habitual present: проверяю
• common UI vocabulary: поле «Получатель»

If you wanted a slightly simpler version, you could say:

• Как только я вижу пустое поле «Получатель», я сразу ещё раз проверяю адрес.

But the original sentence is perfectly good Russian and has a nice, natural flow.