El asegurado recibió el correo.

Because asegurado is being used here as a noun, meaning the insured person / the policyholder, and Spanish normally uses an article with nouns in this kind of sentence.

So:

• el asegurado = the insured person
• asegurado by itself would usually sound incomplete here

This is very common in Spanish, especially in formal or legal language.

It is originally an adjective / past participle from asegurar, but in this sentence it is being used as a noun.

That means:

• el asegurado = the insured man / the insured person
• la asegurada = the insured woman
• los asegurados = the insured people

You can also use it as a true adjective, for example:

• el conductor asegurado = the insured driver

So in your sentence, it is an adjective that has been substantivised (used as a noun).

Recibió is the preterite tense, third person singular, from recibir.

It means the action is seen as a completed event in the past:

• recibió = he/she/it received

In this sentence, the subject is el asegurado, so recibió means the insured person received.

A very common comparison is:

• recibió = received, got it at a specific moment
• recibía = was receiving / used to receive

So recibió presents the action as finished.

The accent mark shows where the stress goes: re-ci-BIÓ.

Without the accent, Spanish stress rules would make you expect the stress somewhere else. The written accent tells you clearly that the last syllable is stressed.

It also helps identify the form as the third person singular preterite:

• yo recibí = I received
• él/ella recibió = he/she received

So the accent is both a pronunciation guide and part of the correct spelling of the tense form.

Because Spanish usually does not need subject pronouns when the subject is already clear.

Here, the subject is explicitly stated as el asegurado, so adding él would be unnecessary.

Spanish often says:

• El asegurado recibió el correo.

not:

• Él, el asegurado, recibió el correo.

You would only add él for emphasis, contrast, or clarification.

It can mean either, depending on context.

In Spain:

• correo can mean mail/post
• correo electrónico means email
• in everyday speech, people often shorten correo electrónico to just correo

So el correo could mean:

• the post / the mail
• the email

Only the context tells you which one is meant. In modern business or insurance contexts, many learners will see correo used for email, but it is not limited to that meaning.

In most of Spain, the c before i or e is pronounced like the th in thin.

So:

• recibió sounds roughly like re-thee-BYO
• correo begins with a normal k sound: ko-RRE-o

A few pronunciation notes:

• rr in correo is a rolled or trilled r
• the final stress in recibió is on the last syllable
• in Latin America, the c in recibió would usually sound like s, but in most of Spain it is th

Yes, but El asegurado recibió el correo is the most neutral and natural order.

This is the standard pattern:

• Subject + verb + object

You can change the order in Spanish, but it usually adds emphasis or sounds more literary or marked. For example:

• Recibió el correo el asegurado.

This is grammatically possible, but it is not the most neutral way to say it. A learner should usually stick with:

• El asegurado recibió el correo.

Yes. That would be the feminine version.

Spanish nouns and articles must agree in gender and number:

• el asegurado = masculine singular
• la asegurada = feminine singular
• los asegurados = masculine or mixed plural
• las aseguradas = feminine plural

So if the insured person is female, you would say:

• La asegurada recibió el correo.

Yes, but it would not mean exactly the same thing in all varieties of Spanish.

• recibió = simple past / preterite
• ha recibido = present perfect

In Spain, the present perfect is often used for a past action that is connected to the present time frame, especially with expressions like hoy, esta mañana, esta semana, and so on.

So:

• El asegurado recibió el correo. = The insured person received the mail/email.
• El asegurado ha recibido el correo. = The insured person has received the mail/email.

Both are correct, but they present the past action a little differently.