Mi resendos la produkton morgaŭ.

Resendos can be divided into three parts:

• re- = again, back
• send- = send
• -os = future tense

So resendos means will send again or will send back, depending on context.

Mi means I. Esperanto usually states the subject clearly, so mi resendos means I will resend.

In some contexts, the subject could be omitted if it is already obvious, but learners should normally include it.

The -n ending marks the direct object in Esperanto.

Here:

• la produkto = the product
• la produkton = the product (as the thing being resent)

Since the product is what I will resend, it takes the accusative ending -n.

La is the definite article, meaning the.

So:

• produkto = a product / product
• la produkto = the product

In this sentence, it refers to a specific product already known from the context, so la is used.

Morgaŭ is an adverb meaning tomorrow. It tells you when the action happens.

Adverbs in Esperanto often end in -e, but some common words like morgaŭ are built differently and do not need an extra ending.

It does not take -n here because it is not the direct object.

Yes. Esperanto word order is fairly flexible.

These all mean basically the same thing:

• Mi resendos la produkton morgaŭ.
• Morgaŭ mi resendos la produkton.

Putting morgaŭ first gives it a little more emphasis, like Tomorrow, I will resend the product.

In Esperanto, tense is usually marked directly on the verb ending.

Common verb endings are:

• -as = present
• -is = past
• -os = future
• -us = conditional
• -u = imperative / volitive
• -i = infinitive

So:

• resendas = resend / am resending
• resendis = resent
• resendos = will resend

Esperanto does not need a separate helper verb like will.

It can mean both, depending on context.

• resendi can mean send again
• It can also mean send back / return by sending

So Mi resendos la produkton might mean either:

• I will resend the product
• I will send the product back

Usually the surrounding context makes the intended meaning clear.

Because the noun ends in -o, which is singular.

Compare:

• produkto = product
• produktoj = products

And with the accusative:

• produkton = product (direct object, singular)
• produktojn = products (direct object, plural)

So la produkton means the product, not the products.

A simple pronunciation guide is:

reh-SEN-dos

A few useful details:

• re sounds like reh
• sen has a clear e sound, like in send
• dos has a clear o, roughly dohs

Esperanto stress normally falls on the second-to-last syllable, so in re-SEN-dos, the stress is on SEN.

Yes, but it changes the meaning.

• Mi resendos la produkton morgaŭ. = I will resend the product.
• Mi resendos produkton morgaŭ. = I will resend a product / product tomorrow.

Esperanto has no separate word for a/an, so the absence of la often gives an indefinite sense.

Esperanto often uses time words directly without a preposition.

So you can simply say:

• hodiaŭ = today
• morgaŭ = tomorrow
• hieraŭ = yesterday

Just as in English you can say I’ll do it tomorrow, Esperanto says Mi faros ĝin morgaŭ without needing an extra word.

Normally no. In Esperanto, prefixes are attached directly to the root.

So you write:

• resendi
• resendos
• resendis

not separate forms like re sendi in ordinary usage.

The prefix re- is a standard part of word-building in Esperanto.