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
mail letter
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "mail letter" is not correct in standard written English.
It is typically used to refer to a letter that is sent through the postal service. Example: "I need to mail a letter to my grandmother for her birthday."
⚠ May contain grammatical issues
News & Media
Academia
Science
Wiki
Alternative expressions(3)
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
16 human-written examples
I've received hate mail, letter bombs.
News & Media
"Certain unpleasant things" 12. Mail letter a.
News & Media
Americans have long had a love-hate relationship with "junk mail" (letter, Oct. 17).
News & Media
For this letter to Henry Mann, please dry some rose petals and put them in the envelope, mail letter in padded envelope, mark hand cancel please.
News & Media
The U.S. Postal Inspection Service said that with more than 32,000 post offices and more than 200 mail-processing facilities nationwide, the USPS uses thousands of pallets (costing $20 each) to move crates of mail, letter trays ($2.75 each) and translucent mail tubs with "United States Postal Service" emblazoned along the side in black letters ($4 each).
News & Media
Byron's fan mail Letter from a girl who signs her name Anna, dated September 1812: "My Lord, Tho I have not the honor of being personally known to you, I yet venture to address you; tho, I cannot offer any other excuse for the Liberty I take, if the irresistible desire I feel of thus (unknown) paying my humble tribute at the Shrine of Genius, be not deemd any apology.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
You can now mail letters from inside the store.
News & Media
He often made long drives to mail letters from distant post offices using pseudonyms.
News & Media
All her mail letters & packages were thrown unopened into the furnace.
News & Media
Print, fax, or mail letters.
She also received the right to mail letters free of charge.
Wiki
Expert writing Tips
Best practice
When referring to sending a letter, always use the correct phrases such as "send a letter" or "post a letter" instead of the grammatically incorrect phrase "mail letter".
Common error
Do not combine "mail" and "letter" in this way. "Mail" functions as a verb, so use "mail a letter" or, more simply, "send a letter".
Source & Trust
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "mail letter" is typically intended to describe the action of sending a physical letter via postal services. However, it's not grammatically sound in standard English. Ludwig indicates that it's not correct and offers better alternatives.
Frequent in
News & Media
31%
Academia
19%
Wiki
17%
Less common in
Science
19%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, while the phrase "mail letter" appears in various sources, it is not considered grammatically correct in standard English. Ludwig flags it as incorrect and suggests using alternatives such as "send a letter" or "post a letter" instead. These alternatives are more appropriate for both formal and informal contexts. The phrase occurs most frequently in News & Media and Academia, despite its grammatical issues. Therefore, it's best to avoid "mail letter" and opt for the recommended alternatives to ensure clarity and correctness in your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Send a letter
Focuses on the action of sending, replacing "mail letter" with a grammatically correct phrase.
Post a letter
Uses "post" as a synonym for "mail", providing a more formal alternative.
Mail a package
Shifts the focus from a letter to a package, suitable if the item is not a standard letter.
Send via postal service
Specifies the method of sending, adding clarity.
Dispatch a letter
Replaces "mail" with "dispatch", offering a more formal tone.
Transmit a letter
Emphasizes the transmission of the letter, suitable for formal contexts.
Put in the mail
Describes the action of placing something in the postal system.
Submit a letter
Implies a formal submission of a letter, often for official purposes.
Send correspondence
Uses a more general term for written communication.
Ship a letter
Although "ship" often implies larger items, it can refer to sending via postal service.
FAQs
What is the correct way to say "mail letter"?
The correct way to say "mail letter" is to use either "send a letter" or "post a letter". The word "mail" should be used as a verb, not an adjective.
Is it grammatically correct to say "mail letter"?
No, it is not grammatically correct to say "mail letter". The proper phrasing involves using "mail" as a verb, such as in the phrase "mail a letter", or replacing the term mail with the word send: "send a letter".
What's the difference between "mail letter" and "send a letter"?
"Mail letter" is not considered correct English. The accurate phrase is "send a letter", where "send" is the verb indicating the action of delivering the letter.
Can I use "mail letter" in formal writing?
No, avoid using "mail letter" in formal writing. Opt for more grammatically correct and professional alternatives like "send a letter" or "post a letter".
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
84%
Authority and reliability
2.8/5
Expert rating
Real-world application tested