Firm, never aggressive
Tone is not a politeness you add out of caution: it is what decides whether a letter is read as a fact to be handled, or as a person to be calmed down.
An angry letter gets filed. A precise letter gets handled. That is not a difference of politeness: it is a difference of effectiveness, and it is decided sentence by sentence.
Being firm means naming a fact, a date, a request, a deadline, without going round the houses. Being aggressive means aiming at the person reading rather than at the case they are handling. In the moment the two feel alike. They never get the same reply.
How it works
What anger loses you
Anger moves the attention. A sentence aimed at the person gives whoever reads it a simpler subject than the case: your tone, rather than your request. Answering the tone costs one line. Answering the substance commits the department. Faced with letters in bulk, the shortest line nearly always wins.
Anger also hands over a reason not to answer on the substance. A contemptuous word, an insult, an exaggeration all allow a reply that takes issue with the form of the letter without ever touching what it asks for. That correction is legitimate, and that is exactly what makes it effective against you: it moves the argument onto ground you opened yourself.
A fact gets examined. Anger, on the other hand, gets calmed down first.

The habit
The wordings that get results, and those that close the door
The substance does not change from one column to the other. Only the sentence changes, and it is the sentence that decides whether the letter is read to the end.
| Instead of | Write |
|---|---|
| You have been taking us for fools for three months. | The file has been open since 3 March. No reply has followed. |
| This is a scandal, a disgrace to your department. | This delay does not match the one announced in your letter of 3 March. |
| You never do what you are asked. | The request of 3 March has had no response to date. |
| I suppose a reply would be too much to ask of your department. | I am asking you for a written reply before 20 April. |
| If this goes on, you are going to regret it. | With no reply by that date, I will pass the file to the body competent to settle it. |
| You could not make this kind of mistake up! | The amount stated does not match the one in the contract signed on 12 January. |
| You ought to be ashamed of treating people like this. | I am asking for this entry to be corrected, and for written confirmation once it has been. |
Brevity is a weapon
A long letter gives people something to grab hold of. Every adjective, every digression, every reminder of an old grievance is one more sentence to answer instead of the request. A short letter leaves nothing to seize on but what it asks for.
A department handling letters in bulk reads fast, sometimes the end first to find the request. Drowned under three paragraphs of narrative, the request reads as secondary. Cut back to a fact, a date and a request, it becomes the only thing there is to deal with.
Why irony never survives official writing
Spoken aloud, tone carries part of the meaning: an ironic sentence is recognised by the voice, the face, the moment. In writing, that support disappears. The sentence stands alone, and a department reading it without the voice that went with it reads it either literally or as contempt.
Both readings hurt the letter. Taken literally, irony becomes an absurd statement. Taken as contempt, it hands over exactly the opening described above: a reason to answer the form rather than the substance. Sarcasm does worse still: it goes straight at the competence or the good faith of the reader, which is the surest way of making them defensive rather than cooperative.
A letter you keep also serves as evidence, read later by a third party who knew neither the tone of voice nor the context of the moment. Irony that felt cutting as you wrote it then reads as simple unseriousness.
Stating a fact is not accusing somebody
A fact names an event, a date, a document, an amount. Anyone can check it, whoever wrote it down: “The transfer announced on 3 March was not received” can be checked against a statement.
An accusation names an intention, a character trait, a generality. It cannot be checked, only argued over: “You decided not to pay” attributes to the reader an intention no document shows.
The difference is not how severe the words are, but what they are aimed at. A fact describes a situation the reader can see for themselves. An accusation describes a person, and a person under attack rarely answers on the substance: they defend themselves.
Firm, never threatening
Naming a factual consequence is not a threat. “With no reply within a fortnight, I will pass the file to the competent body” describes a real, available next step that the writer is ready to take. The reader knows exactly what will happen, and when.
Promising reprisals is a threat. “You are going to regret it”, “I will make sure people hear about this” announce no next step anyone can check: those sentences are meant to worry, not to inform. A real consequence is named precisely. A threat stays vague, because it has nothing real to describe.
A factual consequence stays true when read aloud in front of a neutral third party. A threat never passes that test.
Tone is one habit among those that get a letter answered.
- Look again at the whole anatomy of a letter that gets an answer the seven moves, of which this is one
- Following up without losing your temper going up a level without ever threatening