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
drop him a line
Grammar usage guide and real-world examplesUSAGE SUMMARY
"drop him a line" is correct and can be used in written English.
It is a phrase used to mean "send him a message" or "contact him". For example, "If you ever need to get in touch with John, just drop him a line."
✓ Grammatically correct
News & Media
Travel
General Communication
Alternative expressions(5)
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
12 human-written examples
Drop him a line at [email protected]@theguardian.com
News & Media
Drop him a line on [email protected]@theguardian.com
News & Media
He encouraged "any media of global influence" that may be interested to drop him a line.
News & Media
Drop him a line and he can help you skip the resorts and get to know another side of the island.
News & Media
Former Brisbane Broncos and Wallabies team-mate Wendell Sailor was one of the first to drop him a line: "Congrats to one of my best mates @LoteTuqiri u are the real Dual international & the best.
News & Media
When Weedon invited anyone needing help to play the guitar to drop him a line, sackfuls of mail arrived at Associated Rediffusion, who had to print and mail out thousands of instructional leaflets.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
48 human-written examples
Will be dropping him a line as soon as possible.
News & Media
I dropped him a line one Sunday morning, and discovered that, serendipitously, he was in New York that day.
News & Media
To explore the entire breadth of Jeff's work, follow him on 500px, pay his website a visit, or drop him a 140-character line on Twitter.
News & Media
West boasts that Kris is "lucky I ain't had Jay drop him from the team", a line referencing his frequent collaborator Jay-Z, who was part-owner of the New Jersey Nets, the NBA team that basketball star Kris Humphries played for at the time.
Wiki
Drop them a line.
News & Media
Expert writing Tips
Best practice
Use "drop him a line" when you want to suggest a casual or informal way of contacting someone, typically via a brief message like an email or note.
Common error
Avoid using "drop him a line" in highly formal or professional contexts where a more direct or professional tone is needed. Instead, opt for alternatives like "contact him" or "reach out to him".
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "drop him a line" functions as an idiomatic expression, advising or suggesting that someone should contact another person, typically via a short message. As Ludwig AI confirms, it is correct to use and can be found in different contexts.
Frequent in
News & Media
76%
Academia
9%
Wiki
6%
Less common in
Formal & Business
3%
Science
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "drop him a line" is a grammatically sound and relatively common idiomatic expression used to suggest that someone should contact another person with a short message. As Ludwig AI confirms, it's suitable for various contexts, although most frequently found in News & Media. For formal settings, consider alternatives like "contact him". Best practice involves understanding the context and register to ensure appropriateness. The frequency of this phrase is common, making it a versatile addition to your communication toolkit.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Send him a message
Direct and simple alternative, focusing on the act of sending a message.
Contact him
More formal and general alternative, suitable for various contexts.
Get in touch with him
Slightly more elaborate way of saying contact him.
Reach out to him
Emphasizes the effort to make contact, often used in professional settings.
Write to him
Specifically refers to written communication, such as a letter or email.
Give him a call
Specifies communication via telephone.
Email him
Modern alternative that specifies the medium of communication.
Ping him
Informal, tech-related term for sending a quick message.
Shoot him an email
More casual version of emailing.
Make contact with him
A more formal way to express initiating communication.
FAQs
What does "drop him a line" mean?
The phrase "drop him a line" means to send someone a message, usually a short and informal one, such as an email or note. It's a casual way of saying, "contact him".
When is it appropriate to use "drop him a line"?
It's appropriate in informal settings such as communicating with friends, family, or colleagues you have a friendly relationship with. Avoid using it in very formal or professional situations where a more direct approach is necessary.
What can I say instead of "drop him a line"?
You can use alternatives like "send him a message", "contact him", or "get in touch with him" depending on the context.
Is "drop him a line" grammatically correct?
Yes, "drop him a line" is a grammatically correct and commonly used idiom in English. It follows standard English grammar rules.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested