Thanh toán hóa đơn; hóa đơn tiền điện trong email.

Thanh toán means to pay, but it is a bit more formal and is often used for bills, invoices, fees, or official payments.

• thanh toán hóa đơn = pay the bill / settle the invoice
• trả tiền also means pay, but it is more general and everyday.

For example:

• Tôi thanh toán hóa đơn điện. = I pay the electricity bill.
• Tôi trả tiền cà phê. = I pay for the coffee.

So in this sentence, thanh toán fits well because hóa đơn is a bill/invoice.

Hóa đơn means bill or invoice.

It is commonly used for:

• utility bills
• receipts/invoices from stores or services
• payment documents

In everyday usage, it can mean something like:

• hóa đơn tiền điện = electricity bill
• hóa đơn tiền nước = water bill
• hóa đơn mua hàng = purchase invoice

So thanh toán hóa đơn is a very natural phrase meaning pay the bill.

The repetition is natural if this is written like a note, reminder, or to-do item.

It works like:

• Thanh toán hóa đơn = Pay the bill
• hóa đơn tiền điện trong email = the electricity bill is in the email / the electricity bill can be found in the email

So the second hóa đơn gives more detail about which bill is meant.

In full, a more explicit version might be:

• Thanh toán hóa đơn; hóa đơn tiền điện ở trong email.
• Thanh toán hóa đơn, hóa đơn tiền điện ở trong email.

The original sounds abbreviated, like something written in a checklist.

Vietnamese often puts the main noun first, followed by words that describe what kind of thing it is.

So:

• hóa đơn = bill
• tiền điện = electricity money / electricity charges

Together:

• hóa đơn tiền điện = electricity bill

This is very common in Vietnamese. Similar examples:

• hóa đơn tiền nước = water bill
• tiền nhà = rent / house payment
• tiền điện thoại = phone bill / phone charges

So even though it may feel literal as bill of electricity money, the natural English meaning is simply electricity bill.

Trong email literally means in the email.

Here it most likely means:

• the bill is contained in an email
• you can find the bill in your email
• the bill was sent by email

This is a short, note-like expression. In fuller Vietnamese, you might say:

• Hóa đơn tiền điện ở trong email. = The electricity bill is in the email.
• Hóa đơn tiền điện được gửi trong email. = The electricity bill was sent in an email.
• Hóa đơn tiền điện nằm trong email. = The electricity bill is in the email.

So trong email is understandable, even though it is a bit compressed.

It sounds more like a note, reminder, or checklist item than a fully complete sentence.

That is because Vietnamese, especially in reminders and informal writing, often leaves out words that are understood from context.

So:

• Thanh toán hóa đơn; hóa đơn tiền điện trong email.

feels like:

• Pay the bill; the electricity bill is in the email.

A more complete version could be:

• Hãy thanh toán hóa đơn. Hóa đơn tiền điện ở trong email.
• Thanh toán hóa đơn nhé, hóa đơn tiền điện ở trong email.

So yes, the original is natural if it appears in a message, task list, or memo.

Vietnamese does not use articles like a, an, and the the way English does.

So:

• hóa đơn can mean a bill, the bill, or just bill/bills depending on context.
• email can mean an email or the email depending on context.

The listener figures it out from the situation.

In this phrase:

• thanh toán hóa đơn probably means pay the bill
• trong email probably means in the email

because the context seems specific.

Yes. Depending on the situation, some learners may find these versions more explicit or natural:

• trong email = in the email
• ở trong email = in the email
• trong thư điện tử = in the email message
• trong hộp thư email = in the email inbox
• qua email = by email / via email

These are slightly different:

• trong email = inside the email
• qua email = sent by email

So if the meaning is the electricity bill was sent by email, then qua email may be clearer. If the meaning is look inside the email for the bill, then trong email makes sense.

In conversation, many speakers would probably make it a little fuller.

For example:

• Thanh toán hóa đơn nhé, hóa đơn tiền điện ở trong email.
• Nhớ thanh toán hóa đơn, hóa đơn tiền điện trong email đó.
• Hóa đơn tiền điện ở trong email, thanh toán giúp nhé.

The original version is not wrong, but it feels concise and written, like:

• a reminder
• a work note
• a message to yourself
• a task list entry

So it is best understood as short written Vietnamese, not polished spoken Vietnamese.

Yes, email is very commonly used in Vietnamese, especially in everyday modern speech and writing.

You may also see:

• imeo in very casual phonetic spelling online
• thư điện tử as a more formal/native-style term

But in real life, email is extremely common and natural.

So:

• trong email is perfectly understandable
• trong thư điện tử is more formal and less common in casual use

Here are some clearer versions, depending on the exact meaning:

If you mean Pay the bill; the electricity bill is in the email:

• Thanh toán hóa đơn; hóa đơn tiền điện ở trong email.

If you mean Pay the electricity bill in the email:

• Thanh toán hóa đơn tiền điện trong email.

If you mean Remember to pay the bill; I sent the electricity bill by email:

• Nhớ thanh toán hóa đơn; hóa đơn tiền điện đã được gửi qua email.

If you mean The electricity bill can be found in your email:

• Hóa đơn tiền điện nằm trong email.

So the best rewrite depends on whether trong email means located in the email or sent by email.