10 Formal Synonyms for “I Will Let You Know” - English Recap (2024)

You may need to let someone know more information in a later email. But is “I will let you know” a good formal phrase to use in this case?

Luckily, this article is here to help! We’ve gathered the best synonyms to show you how to say “I will let you know” professionally.

Is It Polite to Say “I Will Let You Know”?

It is polite to say “I will let you know.” It’s a really useful phrase in formal writing because it shows that you’ll get back to someone as soon as you have more relevant information.

Generally, the phrase is very professional. That’s why it works so well in many written contexts. You can’t go wrong using it in an email to your boss, colleagues, or clients.

Here’s an example to show you how it works:

I will let you know as soon as we have processed your application.

Pros

• It’s polite and friendly.
• It’s a professional way to tell someone to wait for more information.

Cons

• It doesn’t clarify when you plan on letting someone know more.
• It’s overused.

Clearly, “I will let you know” works well in most formal emails. However, there are other synonyms available. You may be interested in learning more about them.

So, read on to find out a professional and polite way to say “I will let you know.” We’ve also provided examples for each one.

What to Say Instead of “I Will Let You Know”

• I will be in touch
• I will get back to you
• Let me get back to you
• I will respond
• I’ll email again
• I will reply
• I will get back in touch
• I’ll talk to you again
• Let me email you back
• I’ll reach out

1. I Will Be in Touch

You should use “I will be in touch” instead of “I will let you know” to mix things up between emails. It’s a great phrase with a more conversational and friendly feel.

Generally, it works best when emailing employees. It shows that you will have some more news to provide them soon.

“I will be in touch” also identifies an indefinite timeframe. You would usually say “I will be in touch soon” or “I will be in touch as soon as possible.” Therefore, it’s a loose way to say you’ll reply later without putting pressure on yourself.

Here’s a great email example to show you how it works:

2. I Will Get Back to You

It’s always polite to reply to someone’s email when you have more information to help them. That’s why “I will get back to you” works so well instead of “I will let you know.”

You can use it when emailing customers who are asking about your business. It shows you have read their email, but you will need to wait for something to come through before you can give them a sufficient reply.

You can also refer to this email sample:

3. Let Me Get Back to You

Using “let me get back to you” is a great way to ask permission to reply later.

It shows that you still need to ask some questions before you have all the information that the recipient seeks.

So, you may use it when emailing clients. They might have emailed you to ask for an update, but you may not have what they’re looking for yet.

Starting the phrase with “let me” shows that you need permission from your client. It’s polite and respectful to tell them you’re not quite ready.

We also encourage you to review this sample email:

4. I Will Respond

Perhaps you have a reasonable idea of when you will respond to someone. A confident alternative like “I will respond” will work well here.

However, the key is to know roughly when you will email someone again.

This phrase will have the most success when emailing employees. After all, the confidence that comes with it suggests that you need to be someone’s boss and understand when you might know more information.

Check out this example as well:

5. I’ll Email Again

You can also say “I’ll email again” instead of “I will let you know” in professional contexts.

It shows that you plan on replying to someone soon, but you may not know when.

Saying “I’ll email again” lets the recipient know that they do not need to respond to you. Instead, they simply have to wait for you to be ready to provide more information.

It’s an efficient way to communicate with someone without sending too many emails.

We also recommend referring to this email sample:

6. I Will Reply

Perhaps the confidence that comes from “I will reply” is what you’re looking for here.

It suggests that you plan on replying quickly to the recipient. All you need to do is wait for more information to provide them with.

Since it’s quite a confident phrase, it works best when emailing customers. After all, as an employee at a company, you should be the voice of authority when they ask questions relating to your business. You should be confident and tell them when you’ll respond.

Here’s an email example to demonstrate how to use it:

7. I Will Get Back in Touch

You can use “I will get back in touch” instead of “I will let you know” to sound confident and sincere about your email reply.

It lets the recipient know that you plan to reply quickly when you have more information for them.

Of course, “back in touch” is a slightly more conversational alternative. It still works in most formal emails, but you should use it when you have a good working relationship with the recipient.

You can refer to the following example as well:

8. I’ll Talk to You Again

Try using “I’ll talk to you again” in a more conversational setting. It works well when emailing colleagues you have a good connection with.

Generally, this phrase allows you to wait a while before replying to someone. “Again” is a very loose term that doesn’t give a specific time frame to the recipient.

So you can gather all the relevant information before replying again. It’s a great way to let someone know you plan on replying without being specific about it.

Perhaps this example will also help you:

9. Let Me Email You Back

You can ask for permission with a phrase like “let me email you back.”

It’s a great way to respectfully request that someone gives you some time to get an answer before expecting a reply from you.

You may use it when emailing clients. It shows that you respect and value them, but you still need to wait before you can email them again.

Also, using “let me” makes it a polite request. So, the recipient should know not to reply until you’re ready to email them again with more updates.

Here’s a great example to show you how it works:

10. I’ll Reach Out

You can also say “I’ll reach out” instead of “I will let you know” in most professional emails.

It shows that you plan on getting back in contact with someone once you have relevant information to share with them.

We recommend this when emailing clients. It shows that you’re thinking about them and will happily provide more information for them when you can update them.

Of course, it still doesn’t give a specific time frame for the update. But that’s okay. It works well if you have a friendly relationship with the recipient.

You should also check out this email sample: