Looking on the internet deeply has found these results:

Thank you for letting me know about it! is the most popular phrase on the web.

Thank you for letting me know! 1514,000 results on the web	Thank you for letting me know about it! 12,950,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
So thank you for letting me know that I need to keep a better eye on him. I had to, you know, thank you for letting me take you dancing the other night. Thank you for letting me know. Thank you for letting me know your diplomas and qualifications Thank you for letting me know and for driving all the way over here to tell me. Yes, thank you for letting me know. And thank you for letting me know about Megan. Thank you for letting me know.	Thank you for letting me be part of the moment. Thank you for letting me know. Thank you for letting me know and for driving all the way over here to tell me. So thank you for letting me know that I need to keep a better eye on him. Thank you for letting me know your diplomas and qualifications And thank you for letting me know about Megan. Yes, thank you for letting me know. Thank you for letting me know.

Thank you for letting me know!

1514,000 results on the web

Thank you for letting me know about it!

12,950,000 results on the web

More popular!

So thank you for letting me know that I need to keep a better eye on him.
I had to, you know, thank you for letting me take you dancing the other night.
Thank you for letting me know.
Thank you for letting me know your diplomas and qualifications
Thank you for letting me know and for driving all the way over here to tell me.
Yes, thank you for letting me know.
And thank you for letting me know about Megan.
Thank you for letting me know.

Thank you for letting me be part of the moment.
Thank you for letting me know.
Thank you for letting me know and for driving all the way over here to tell me.
So thank you for letting me know that I need to keep a better eye on him.
Thank you for letting me know your diplomas and qualifications
And thank you for letting me know about Megan.
Yes, thank you for letting me know.
Thank you for letting me know.