Ludwig is an AI-powered English writing assistant that helps you find example sentences, check grammar, and improve your writing using reliable sources from reputable publications.

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Ludwig offers both free and premium plans. The free plan provides basic access to our features, while the premium plan unlocks advanced tools, unlimited searches, and additional writing assistance features.

How does Ludwig help with English learning?

Ludwig provides contextual example sentences from reliable sources like The New York Times, BBC, and academic publications, helping you understand how words and phrases are used in real-world contexts. This improves both writing fluency and comprehension skills.

Ludwig is trusted by students, teachers, researchers, and professionals worldwide. It's used by top universities including MIT, Stanford, Harvard, and Oxford, as well as professionals in tech companies like Adobe.

What makes Ludwig different from other writing tools?

Ludwig focuses on providing real example sentences from authoritative sources, not just grammar checking. This contextual approach helps users understand not just what's correct, but how language is actually used by native speakers and professional writers.

Used and loved by millions

Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

Will let you know once
Grammar usage guide and real-world examples

USAGE SUMMARY

"will let you know once" is correct and usable in written English
You can use it when you need to promise someone that you will inform them of something as soon as it is possible. For example: "I don't have the information yet, but I will let you know once I do."

✓ Grammatically correct

News & Media

Academia

Wiki

Table of contents

Usage summary

Human-verified examples

Expert writing tips

Linguistic context

Ludwig's wrap-up

Alternative expressions

FAQs

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

We've reached out to the magazine for an official confirmation and will let you know once we hear back.

News & Media

Huffington Post

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

We'll let you know once we know!

Academia

Yale University

I'll let you know once the film's out.

News & Media

The Guardian - Film

Again, no pricing, but we'll let you know once LG releases more information.

News & Media

TechCrunch

UPDATE: Some users are reporting that things are back to normal, but we'll let you know once we hear back from Twitter.

News & Media

TechCrunch

It's still early in the planning stages (feel free to leave ideas in the comments), and we'll let you know once it's ready.

News & Media

TechCrunch

CEO Reece Pacheco says that the service is still in a private alpha so the company doesn't have much product news at this point, but we'll let you know once it does (he adds that the company is hiring with the new funding).

News & Media

TechCrunch

Right now the Wimm One is only available to developers for $299, but we'll be sure to let you know once it's ready to hit store shelves.

News & Media

TechCrunch

"I'll let you know once I have it confirmed.

News & Media

The New York Times

Once we complete this, we will let you know where it can be accessed, and you (and others) can refer to this in any further discussion.

News & Media

The New York Times

Once a table is filled, we will let you know who has signed up and you can then contact them to assign the dishes to bring.

Academia

Harvard University

Expert writing Tips

✓ Best practice

Use "will let you know once" when you want to assure someone that you will provide them with information as soon as it becomes available or after a specific event occurs. It is a straightforward and commonly understood way to express future communication.

⚠ Common error

Avoid using "will let you know once" when immediate communication is expected or when the information is already readily available. Overusing this phrase can make you seem passive or inefficient in your communication. For example, don't say "will let you know once" when someone asks a simple question you can answer immediately.

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Linguistic Context

The phrase "will let you know once" functions as a promise or assurance to provide information at a future time, contingent upon a specific event or condition. Ludwig AI confirms its usability in written English. It acts as a communicative device to manage expectations and ensure the receiver that information is forthcoming.

Expression frequency: Common

✓ Frequent in

News & Media

30%

Academia

25%

Wiki

20%

⚠ Less common in

Formal & Business

10%

Science

Ludwig's WRAP-UP

In summary, "will let you know once" is a commonly used and grammatically sound phrase that assures someone of future communication upon a specific event or condition. As Ludwig AI confirms, this phrase is appropriate for various contexts, striking a balance between formality and directness. While alternatives exist for more formal situations, this phrase effectively communicates the promise of future information. It is frequently used in "News & Media", "Academia", and "Wiki" contexts, making it a versatile and reliable choice for expressing future updates. Remember to use this phrase when a follow-up is genuinely intended and avoid overuse in situations requiring immediate responses.

Alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

will inform you as soon as

Replaces "let you know" with "inform you" and "once" with "as soon as", making it slightly more formal.

will notify you when

Substitutes "let you know" with "notify you" and "once" with "when", emphasizing the act of notification.

will update you after

Uses "update you" instead of "let you know" and specifies "after" an event, highlighting the provision of new information.

will get back to you following

Replaces "will let you know" with a more business-oriented "will get back to you", indicating a return communication after something has occurred.

will advise you subsequently

A more formal substitute, replacing "let you know" with "advise you" and "once" with "subsequently".

will communicate with you thereafter

This is a more formal variation, using "communicate with you" in place of "let you know", giving a more sophisticated tone.

More alternative expressions(6)

will let you know later

will let you know only

will let you know soon

will let you know when

will let you know after

will let you know as

FAQs

What does "will let you know once" mean?

The phrase "will let you know once" means that you will inform someone about something as soon as it happens or as soon as you find out about it.

How can I use "will let you know once" in a sentence?

You can use "will let you know once" to assure someone that you will provide them with information as soon as it becomes available. For example, "I'm waiting for confirmation, but I will let you know once I have it."

What are some alternatives to "will let you know once"?

Some alternatives to "will let you know once" include "will inform you as soon as", "will notify you when", or "will update you after" depending on the context.

Is "will let you know once" formal or informal?

"Will let you know once" is generally considered neutral and can be used in both informal and professional contexts. However, for very formal situations, consider alternatives like "will advise you subsequently".

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Table of contents

Usage summary

Human-verified examples

Expert writing tips

Linguistic context

Ludwig's wrap-up

Alternative expressions

FAQs

Source & Trust

82%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences:

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Will let you know onceGrammar usage guide and real-world examples

Will let you know once
Grammar usage guide and real-world examples