Potvrzení je v e-mailu.

Potvrzení is a noun. It is neuter singular, and the ending -í is a very common neuter noun ending in Czech.

This word is related to the verb potvrdit = to confirm. So potvrzení means confirmation or confirmation document/message, depending on context.

In this sentence, potvrzení is in the nominative case because it is the subject of the sentence.

Je means is. It is the 3rd person singular form of být = to be.

So the structure is very straightforward:

Potvrzení = the confirmation
je = is
v e-mailu = in the email

Unlike in some languages where the verb to be can be dropped in the present tense, in normal Czech it is usually kept in sentences like this. So Potvrzení je v e-mailu is the standard full sentence.

If you removed je, it would sound incomplete in most normal contexts.

Because after the preposition v = in, Czech normally uses the locative case for location.

So:

• base form: e-mail
• after v: v e-mailu

This is one of the most important things to get used to in Czech: prepositions often require a specific case, and the noun changes form because of that.

Here, v + location = locative.

E-mail is treated as a masculine inanimate noun in Czech. In the singular locative, many masculine inanimate nouns take -u, so:

• e-mail → v e-mailu

This is the form used after v in this sentence.

For a learner, the key point is not to think of -u as meaning something by itself like English to or for. It is simply the noun ending required here by the case.

Both v and ve mean in. The longer form ve is used mainly to make pronunciation easier, especially before difficult consonant clusters.

Examples:

• v e-mailu
• ve škole
• ve středu

Since e-mailu begins with a vowel sound, v e-mailu is easy to pronounce, so v is the normal choice.

Czech has no articles like a/an or the.

So potvrzení by itself can mean:

• a confirmation
• the confirmation

The exact meaning depends on context.

In a sentence like Potvrzení je v e-mailu, English often uses the because both speaker and listener usually know which confirmation is meant. But the Czech sentence itself does not mark that directly with an article.

Yes. Czech word order is more flexible than English word order.

The neutral version here is:

Potvrzení je v e-mailu.

But you could also say:

V e-mailu je potvrzení.

Both are grammatical. The difference is mainly one of focus or emphasis.

• Potvrzení je v e-mailu.
  This starts with confirmation, so it feels like you are saying where the confirmation is.

• V e-mailu je potvrzení.
  This starts with in the email, so it puts more focus on the location.

English is much less flexible here, but Czech often moves elements around for information structure.

A rough guide:

potvrzení ≈ POT-vr-zeh-nee

A few important points:

• Czech stress is almost always on the first syllable, so POT is stressed.
• The ř sound in Czech is difficult for English speakers. In this word, it appears in the -vrz- part, and many learners need time to master it.
• The final -í is a long vowel sound, like a longer ee.

And:

e-mailu ≈ EH-mai-loo

Again, stress goes on the first syllable: EH-mailu.

It can be used much more broadly. Potvrzení is a general word for confirmation.

Depending on context, it can mean:

• confirmation in an email
• a confirmation message
• a receipt/confirmation of an order
• an official certificate or written confirmation
• confirmation that something is true

So this sentence does not mean that potvrzení is specifically an email-related word. The email is just where the confirmation is located.

Yes. You may see:

• e-mail
• email

Both are common, though e-mail has long been the more traditional spelling. In modern usage, email is also very widespread.

In this sentence, if you used the spelling email, the locative would usually be:

v emailu

So both of these can occur:

• Potvrzení je v e-mailu.
• Potvrzení je v emailu.

The meaning is the same.

Usually v e-mailu means in the email message itself.

So if someone says Potvrzení je v e-mailu, the natural interpretation is:

• the confirmation is written in the email
• the confirmation is contained in that email message

If you wanted to talk more specifically about an inbox or mailbox, Czech would usually use a different expression, such as something involving schránka or another more precise wording.

So for a learner, the safest interpretation of v e-mailu is in the email message.

It is basically neutral. Nothing in it is especially formal or especially informal.

It would work well in:

• everyday conversation
• text messages
• work communication
• customer support replies

If someone wanted to sound a little more formal or complete, they might say something longer, but Potvrzení je v e-mailu is perfectly natural and standard Czech.