Mail vs Post

When to use each in English, with meaning, register, and examples.

Mail

Top 1,000 (very common)A2noun

Post

Top 1,000 (very common)B1
 MailPost
Pronunciation🇬🇧 /["/meɪl/"]/🇺🇸 /["/meɪl/"]/🇬🇧 /["/pəʊst/"]/🇺🇸 /["/pəʊst/"]/
MeaningA system for sending letters and packages.To send or put something somewhere, especially online.
ExampleI received a letter in the mail today.a postgraduate
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA2B1
Part of speechnoun
Collocationscertified, registered, express, item, piece, sackful, post, send, get, come, go, delivery, order, message, by mail, in the mail, certified, registered, express, item, piece, sackful, post, send, get, come, go, delivery, order, message, by mail, in the mail, certified, registered, express, item, piece, sackful, post, send, get, come, go, delivery, order, message, by mail, in the mailpost a message, post a photo, post online, post a comment
Antonymsignore, neglectremove, delete
Common mistakesConfused with 'male' sound., Using 'mail' as a countable noun incorrectly (e.g., saying 'two mails' instead of 'two pieces of mail')., Overusing 'mail' in casual conversations when 'send' is more natural.Confused with 'past' in writing., Using 'post' without an object, like just saying 'I'm going to post.', Mixing up 'post' with 'upload' – posting can include sharing, not just uploading.
Usage notesUse 'mail' when referring to traditional postal services or electronic mail (email). It is generally appropriate in both casual and formal contexts.Commonly used when sharing information online, like on social media. Be careful not to confuse it with 'mail' when referring to physical letters.

Frequently asked questions: Mail vs Post

What's the difference between Mail and Post?

Mail: A system for sending letters and packages. Post: To send or put something somewhere, especially online.

Are Mail and Post the same CEFR level?

Mail: A2, Post: B1 on the CEFR scale.

Can I use Mail and Post interchangeably?

Not always. Mail and Post are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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