Por supuesto, reviso la póliza.

Because reviso is the first-person singular form of revisar in the present tense.

• yo reviso = I review / I check
• tú revisas = you review
• él/ella revisa = he/she reviews

So in Por supuesto, reviso la póliza, the speaker is saying I’ll review/check the policy or I’m reviewing/checking the policy, depending on context.

Spanish often drops subject pronouns when the verb already makes the subject clear.

Here, reviso already tells you the subject is yo (I), so saying yo is usually unnecessary.

• Reviso la póliza. = I review/check the policy.
• Yo reviso la póliza. = also correct, but yo adds emphasis, contrast, or clarity.

For example:

• Yo reviso la póliza, y ella firma.
  I review the policy, and she signs.

Por supuesto means of course, certainly, or sure.

It is a very common expression used to agree politely or confidently.

Examples:

• Por supuesto. = Of course.
• Por supuesto, te ayudo. = Of course, I’ll help you.

In your sentence, it sets a helpful, cooperative tone:

• Por supuesto, reviso la póliza. = Of course, I’ll review/check the policy.

Spanish uses definite articles (el, la, los, las) more often than English does.

So la póliza literally means the policy, and in many contexts Spanish prefers the article where English might say the policy, your policy, or simply policy, depending on the situation.

Here, la póliza probably refers to a specific policy already known from context.

Also:

• póliza is a feminine noun
• that is why it takes la, not el

In this context, póliza usually means an insurance policy in Latin American Spanish.

So:

• la póliza = the policy
• often specifically the insurance policy

Depending on context, póliza can refer to other kinds of official policy documents, but insurance policy is the most common meaning learners will encounter.

Not exactly. This is a very useful point because it can be a false friend.

In many contexts, revisar means:

• to review
• to check
• to inspect
• sometimes to look over

It does not always mean English to revise in the sense of editing or rewriting.

So:

• Reviso la póliza usually means I check/review the policy
• not necessarily I revise the policy in the editing sense

If you mean revise/edit something, Spanish may use revisar, but the exact meaning depends on context.

Spanish often uses the present tense for actions that are happening now, very soon, or as an immediate response.

So Reviso la póliza can mean:

• I review the policy
• I’m reviewing the policy
• I’ll review the policy
  depending on the situation

After Por supuesto, it can sound like an immediate promise or action:

• Of course, I’ll check the policy.

This is very natural in Spanish.

Yes, absolutely.

• Reviso la póliza = natural and concise; often sounds immediate
• Voy a revisar la póliza = I’m going to review the policy; slightly more explicit about near future

Both are correct. The difference is mostly one of style and nuance.

Compare:

• Por supuesto, reviso la póliza. = Of course, I’ll check the policy.
• Por supuesto, voy a revisar la póliza. = Of course, I’m going to check the policy.

The comma separates the introductory expression Por supuesto from the main clause.

So the sentence is structured like this:

• Por supuesto, = introductory phrase, meaning of course
• reviso la póliza = main statement

This comma is natural in writing because Por supuesto comments on the whole sentence.

Póliza is pronounced with the stress on the first syllable:

PO-li-sa in most Latin American accents

The accent mark on ó shows where the stress goes:

• pó-li-za

A rough English-friendly approximation is:

• POH-lee-sah

But remember:

• Spanish z in most of Latin America sounds like s
• the vowels are short and clear:
  • o = pure oh
  • i = ee
  • a = ah

Yes. Claro is also very common and natural.

Compare:

• Por supuesto = of course / certainly
• Claro = sure / of course / clearly

Both work, but the tone can be slightly different:

• Por supuesto can sound a bit more formal or polished
• Claro can sound a bit more casual and conversational

So both are good:

• Por supuesto, reviso la póliza.
• Claro, reviso la póliza.

Yes, very much so.

Por supuesto, reviso la póliza sounds helpful, cooperative, and professional. It is especially natural in situations like:

• insurance
• customer support
• office communication
• service interactions

If you wanted to sound even more formal, you could also say:

• Por supuesto, reviso la póliza ahora mismo.
  Of course, I’ll review the policy right away.
• Con gusto reviso la póliza.
  I’d be happy to review the policy.

Yes. Revisar is a flexible verb, and its best English translation depends on context.

For example:

• Reviso el documento. = I review/check the document.
• Reviso el carro. = I inspect/check the car.
• Reviso mi correo. = I check my email.

So in Reviso la póliza, possible translations include:

• I review the policy
• I check the policy
• I look over the policy

The exact choice depends on what kind of checking is meant.