The phrase “I will let you know” is a common way to promise future communication. While it is perfectly acceptable, using more formal or professional alternatives can make your emails, business conversations, and workplace communication sound more polished and courteous.
Whether you’re updating a client, responding to a colleague, or corresponding with a manager, these alternatives can help you communicate with greater professionalism.
Meaning of “I Will Let You Know”
“I will let you know” means that you intend to provide information, an update, or a decision when it becomes available.
Tone:
Professional, reassuring, and informative.
40+ Formal Synonyms for “I Will Let You Know”
Professional Email Alternatives
1. I will keep you informed
“I will keep you informed as the project progresses.”
2. I will keep you updated
“I will keep you updated on any developments.”
3. I will provide an update
“I will provide an update once I receive confirmation.”
4. I will notify you
“I will notify you when the report is ready.”
5. I will inform you
“I will inform you as soon as more information becomes available.”
6. I will advise you
“I will advise you of any changes.”
Formal Business Alternatives
7. I will communicate any updates
“I will communicate any updates promptly.”
8. I will share the details with you
“I will share the details with you once finalized.”
9. I will update you accordingly
“I will update you accordingly after the meeting.”
10. I will follow up with you
“I will follow up with you next week.”
11. I will get back to you
“I will get back to you once I have an answer.”
12. I will provide further information
“I will provide further information as it becomes available.”
Polite and Respectful Alternatives
13. I will keep you posted
“I will keep you posted on our progress.”
14. I will be in touch
“I will be in touch once everything is confirmed.”
15. I will reach out to you
“I will reach out to you with the next steps.”
16. You will hear from me soon
“You will hear from me soon regarding this matter.”
17. I will send you an update
“I will send you an update by Friday.”
18. I will respond once I have more information
“I will respond once I have more information.”
Formal Corporate Alternatives
19. I will provide confirmation
“I will provide confirmation once arrangements are complete.”
20. I will advise you accordingly
“I will advise you accordingly after my review.”
21. I will notify you promptly
“I will notify you promptly of any changes.”
22. I will update you at the earliest opportunity
“I will update you at the earliest opportunity.”
23. I will relay the information
“I will relay the information once it has been approved.”
24. I will communicate the outcome
“I will communicate the outcome after the discussion.”
Decision & Approval Alternatives
25. I will let you know once a decision has been made
“I will let you know once a decision has been made.”
26. I will inform you of the outcome
“I will inform you of the outcome as soon as possible.”
27. I will notify you of the results
“I will notify you of the results once available.”
28. I will share the final decision
“I will share the final decision by Monday.”
29. I will update you after the review
“I will update you after the review is complete.”
30. I will provide the next steps
“I will provide the next steps shortly.”
Concise Professional Alternatives
31. I’ll update you
“I’ll update you tomorrow.”
32. I’ll keep you informed
“I’ll keep you informed throughout the process.”
33. I’ll follow up
“I’ll follow up once everything is confirmed.”
34. I’ll be in touch
“I’ll be in touch soon.”
35. I’ll notify you
“I’ll notify you when it’s ready.”
High-Formal Alternatives
36. I shall inform you
“I shall inform you upon receipt of the necessary information.”
37. I shall advise you accordingly
“I shall advise you accordingly once the review is complete.”
38. I will ensure you are informed
“I will ensure you are informed of any developments.”
39. I will provide timely updates
“I will provide timely updates throughout the project.”
40. I will communicate further as appropriate
“I will communicate further as appropriate.”
Email Examples
Example 1: Project Update
Instead of:
I will let you know when I have more information.
Use:
I will keep you informed as soon as additional information becomes available.
Example 2: Job Interview
Instead of:
I’ll let you know after the interview.
Use:
I will follow up once the interview process has concluded.
Example 3: Client Communication
Instead of:
I’ll let you know if anything changes.
Use:
I will notify you promptly should there be any changes.
Best Alternatives by Context
| Context | Recommended Alternative |
|---|---|
| Business email | I will keep you informed |
| Client communication | I will provide an update |
| Job interview | I will follow up with you |
| Project management | I will keep you updated |
| Formal correspondence | I will notify you |
| Decision pending | I will inform you of the outcome |
| Executive communication | I will communicate the outcome |
| General workplace | I will be in touch |
FAQs
What is the most professional way to say “I will let you know”?
Some of the best professional alternatives include:
- I will keep you informed
- I will provide an update
- I will notify you
- I will inform you
- I will follow up with you
Is “I will let you know” professional?
Yes, it is appropriate for most workplace situations. However, more formal alternatives may better suit business emails and executive communication.
What is the most formal alternative?
Highly formal options include:
- I shall inform you
- I shall advise you accordingly
- I will communicate the outcome
- I will ensure you are informed
Which alternative works best in business emails?
For professional emails, consider:
- I will keep you informed
- I will provide an update
- I will notify you promptly
- I will follow up with you
Conclusion
While “I will let you know” is clear and professional, using more specific alternatives can make your communication sound more polished and purposeful. These 40 formal synonyms are ideal for emails, client interactions, workplace updates, and business correspondence.