Le envié un saludo a mi profesora desde la playa.

Yes, they both point to the same person, but this is very normal in Spanish.

• le = the indirect object pronoun: to her
• a mi profesora = the full noun phrase: to my teacher

Spanish often uses the pronoun and the full phrase together. This is called clitic doubling. In English, this can feel repetitive, but in Spanish it is very common and natural:

• Le envié un saludo a mi profesora.

The le shows the recipient, and a mi profesora makes it clear who that recipient is.

Because mi profesora is the indirect object, not the direct object.

In this sentence:

• un saludo = the thing being sent → direct object
• a mi profesora / le = the person receiving it → indirect object

Spanish uses:

• lo/la for direct objects
• le for indirect objects

So:

• Le envié un saludo = I sent her a greeting

Using la here would be wrong in standard Spanish, because your teacher is not the thing being sent; she is the person receiving it.

Envié is the 1st person singular preterite of enviar.

• enviar = to send
• envié = I sent

The preterite is used for a completed action in the past. So this sentence presents the sending as a finished event.

Compare:

• envié = I sent
• enviaba = I was sending / I used to send
• he enviado = I have sent

Here, envié fits because it describes one completed action.

Because Spanish often leaves out subject pronouns when they are clear from the verb ending.

• envié already tells you the subject is I
• so yo is not necessary

You could say:

• Yo le envié un saludo a mi profesora desde la playa

But normally Spanish prefers to omit yo unless you want emphasis, contrast, or clarity.

For example:

• Yo le envié un saludo, no Marta.
  = I sent her a greeting, not Marta.

Because with verbs like enviar, the recipient is introduced with a.

So:

• enviar algo a alguien = to send something to someone

Here:

• un saludo = something
• a mi profesora = to my teacher

So the structure is:

• Le envié un saludo a mi profesora
• literally: I sent a greeting to my teacher

This a is a normal part of marking the recipient.

Un saludo literally means a greeting, but in real Spanish it often has a broader meaning like:

• regards
• best wishes
• say hello
• a greeting from me

So Le envié un saludo a mi profesora does not necessarily mean a formal spoken greeting. It can mean that you sent your regards or passed on a friendly message.

In everyday Spanish, this is very natural.

Normally, it means the speaker sent it from the beach.

So the natural interpretation is:

• I sent my teacher a greeting while I was at the beach
• or from the beach

It usually tells you the origin/location of the sending, not the teacher’s location.

If you wanted to say the teacher was at the beach, you would normally need a different structure or more context.

Yes. Spanish word order is more flexible than English, although some orders sound more natural than others.

The original sentence is perfectly natural:

• Le envié un saludo a mi profesora desde la playa.

But you could also say:

• Desde la playa, le envié un saludo a mi profesora.
• A mi profesora le envié un saludo desde la playa.

These versions shift the emphasis slightly:

• Desde la playa... emphasizes where you were
• A mi profesora... emphasizes who received it

The original version is a neutral, natural way to say it.

The accent mark shows the correct stress.

• envié is stressed on the last syllable: en-vie-É

This is the normal written form of the preterite I sent.

It also helps distinguish it from other forms of the verb. Spanish spelling uses accent marks very systematically, so this accent is not optional.

In modern standard Spanish, possessive adjectives like mi, tu, su, nuestro normally go directly before the noun without an article.

So:

• mi profesora = my teacher

Not:

• la mi profesora ✘

That older-style structure exists in some historical or regional uses, but not in standard modern Spanish.

It can mean either, depending on context.

In Spanish, profesor / profesora is widely used for a teacher, especially in schools and academic settings. In English, professor is usually more restricted, but Spanish is broader here.

So mi profesora could mean:

• my teacher
• my professor

The exact English translation depends on the situation.