How to choose tone in 5 seconds
- Formal: you do not know the person or it is official.
- Semi formal: you know the name and it is respectful.
- Informal: friend or relative.
Greeting and sign off pairs
- Formal: Dear Sir or Madam → Yours faithfully,
- Semi formal: Dear Ms Rahman → Yours sincerely,
- Informal: Hi Arif Hello Samira → Best, Take care,
Rule: Match the greeting with the sign off. Do not mix Dear Sir with Best.
Openings by purpose
Request for information or help
- Formal: I am writing to request information regarding…
- Semi formal: I am contacting you about… Could you let me know…
- Informal: Can you tell me… I am planning to…
Complaint
- Formal: I am writing to complain about… which occurred on…
- Semi formal: I am concerned about… and would like this resolved.
- Informal: I need to tell you about a problem with…
Apology
- Formal: Please accept my sincere apologies for…
- Semi formal: I would like to apologise for…
- Informal: I am really sorry about…
Application or reference
- Formal: I am writing to apply for the position of…
- Semi formal: I am writing to ask whether you could provide a reference for…
Invitation or arrangement
- Formal: I would like to invite you to… which will take place on…
- Semi formal: I am writing to arrange… on… Would that be convenient
- Informal: Do you want to come to… on… Let me know if you are free.
Explanation of absence or delay
- Formal: I regret to inform you that I will be unable to… due to…
- Semi formal: I wanted to let you know that… because…
- Informal: I could not make it because…
Thanks
- Formal: I am writing to express my appreciation for…
- Semi formal: Thank you for… I found it very helpful.
- Informal: Thanks a lot for…
Closings by purpose
Requests and next steps
- Formal: I would appreciate it if you could… Please let me know by…
- Semi formal: Could you confirm… by…
- Informal: Please tell me by… if that works.
Complaints and remedies
- Formal: I expect a refund or replacement and look forward to your prompt response.
- Semi formal: Please advise how you plan to resolve this.
- Informal: Can you sort this out and message me
Apology and repair
- Formal: I hope this will not cause further inconvenience and I will ensure it does not happen again.
- Semi formal: I will make sure this is not repeated.
- Informal: I will not let it happen again.
Thanks and goodwill
- Formal: Thank you for your attention to this matter.
- Semi formal: Many thanks for your help.
- Informal: Thanks again. You are a star.
Sign off lines you can trust
- Formal: Yours faithfully, Yours sincerely, Kind regards,
- Semi formal: Kind regards, Warm regards, Best regards,
- Informal: Best, Cheers, Take care,
Add your full name on the next line for formal and semi formal. For informal, first name is fine.
Politeness and clarity toolkit
- Softeners: I would be grateful if, Would it be possible to, I was wondering if
- Deadlines: by Friday, no later than 15 May, as soon as possible
- Offer help: I am happy to provide further details, I can send documents if needed
- Reference hooks: Order number…, Booking reference…, On 12 July…
Micro templates (copy and adapt)
Formal request
Dear Sir or Madam,
I am writing to request information regarding [topic]. Specifically, I would like to know [point A] and [point B]. I would appreciate it if you could respond by [date].
Yours faithfully,
[Full name]
Semi formal complaint
Dear Mr Hasan,
I am contacting you about [issue] with [service or product]. It [impact] on [date]. Could you please [action] and let me know by [date] how this will be resolved
Yours sincerely,
[Full name]
Informal invitation
Hi Rina,
I am planning [event] on [date] at [place]. Do you want to join If yes, tell me by [time] so I can book.
Best,
[First name]
Tone swaps: formal, semi, informal
- help → assist → help → give me a hand
- fix → resolve → sort out → fix
- buy → purchase → buy → pick up
- say sorry → apologise → say sorry → sorry
Punctuation and format tips
- Use a comma after the greeting and the sign off.
- Leave a blank line between paragraphs.
- Capitalise names, titles, months, and I.
- Keep sentences short and goal focused.
Common errors and quick fixes
- Mixed tone: Dear Sir with Best. → Pair correctly.
- No purpose line: The reader must know why you write in sentence one.
- Missing bullet points: Tick each task bullet before writing.
- Vague request: Add a clear action and a time marker.
- Over casual in formal letters: Avoid contractions in formal unless quoted.
10 minute practice routine
- 2 min: identify audience and tone.
- 2 min: choose an opening from this library and write a one line purpose.
- 4 min: draft closing with a clear action and deadline.
- 2 min: add greeting, sign off, and check tone, bullets, and spelling.
Quick checklist before you submit
- Correct greeting and matching sign off
- Opening states purpose in one sentence
- All bullets covered in the body
- Closing gives action and time frame
- Tone, vocabulary, and punctuation consistent
Build your personal library
- Keep three openings and three closings per tone on a single page.
- Add one fresh line after each practice test.
- Highlight deadline phrases and apology lines.
- Review before every GT Letter task.
Final advice
Decide tone first, pick a ready opening, deliver the bullets, then close with a clear action and the right sign off. With a compact library and a short routine, you will write fast, sound professional, and meet the task exactly.