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Project delay notice

Deliver a slipped deadline like a professional: the new date, the reason without excuses, what's protected, and what you're doing so it holds.

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Subjectthe inventory dashboard — revised delivery date: Friday 26 September

Hi Rohit, I need to move the delivery date for the inventory dashboard. The revised date is Friday 26 September — one week later than planned. I'm sorry for the disruption this causes. The reason: the supplier API we integrate returned malformed data for two of your warehouses, and building the validation layer to handle it safely took priority over hitting the date with bad numbers. What this doesn't change: the scope is unchanged, the budget is unchanged, and the reporting module is already live for your team to use. To make the new date reliable: the risky integration work is now done and tested; what remains is UI polish we've done many times over. If the revised date creates a problem on your side, tell me what's immovable and I'll re-plan around it. Best regards, Nisha

How to use it well

  • →Lead with the new date, not the apology — the reader's first question is "when", and burying it under context reads as evasion.
  • →One honest reason beats three small ones; a list of reasons reads as a list of excuses.
  • →Send it the day you know. A delay announced early is planning; the same delay announced late is a broken promise.

Part by part

revised delivery date: {{new_date}}
The new date in the subject line. Bad news buried in the body is read as an attempt to soften it, which costs more trust than the delay itself.
{{slip_size}} later than planned
Quantifies the slip rather than leaving it to be calculated. Stating it plainly is what makes the message read as candid.
What this doesn't change: {{protected}}
Bounds the damage. Without it a client assumes everything has moved, which is usually a worse conclusion than the truth.
To make the new date reliable: {{mitigation}}
Explains why the new date is different from the old one. A revised date with no change in approach is a guess, and clients read it that way.
tell me what's immovable and I'll re-plan around it
Invites the constraint you may not know about, which is how a delay gets absorbed rather than escalated.

Common mistakes

  • Burying the new date in the third paragraph.

    The reader is looking for one fact. Making them hunt for it reads as evasion, and the goodwill lost is larger than anything the surrounding explanation buys.

  • Announcing the delay on the original delivery date.

    Timing is most of what is being judged. The same message a fortnight early is a plan; on the day it is a notification that something already went wrong and was not shared.

  • A long explanation of why it happened.

    Length reads as justification. One clear sentence on the cause and considerably more on what makes the new date reliable is the ratio that rebuilds confidence.

Questions

How much should I explain the cause?

One or two sentences, factual and without blame. What a client wants is confidence in the new date, and that comes from the mitigation rather than from understanding the failure.

Should I offer something to compensate?

Only if the delay genuinely costs them and you can afford it. Offering a discount unprompted turns a schedule conversation into a commercial one, which is not always in your favour.

What if I might slip again?

Then pad the new date and say what would move it. A second slip after a confident revision costs far more than a longer estimate would have, because it removes belief in every future date.

Should this be a call rather than an email?

For a significant delay on an important project, call first and follow with this in writing. The call handles the reaction; the written note is what both sides refer to afterwards.

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