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Get thank you letters out the week the gift arrives

Today

Gifts came in three weeks ago. The acknowledgments are still sitting in a pile because writing forty letters that do not all sound identical is a full afternoon, so either they go out late or everyone gets the same paragraph with a different name on top.

With Claude

You have three letters in your own voice, one for a first gift, one for a repeat donor, one for a major gift, each with a marked line where your ED adds the sentence only she could write. You merge in the details from your own system.

The prompt

Paste this into claude.ai and replace anything in brackets.

You are drafting donor thank you letters for a US nonprofit. Match the voice of these letters we have already sent:

[paste two or three of your own past acknowledgment letters here]

House rules: the people we serve are called [participants, families, members, clients, whatever your organization actually says], the letters are signed by [role and title], and we never use these words: [list the words you refuse to use].

One real, verified thing our organization did in the last few months that a donor would find specific and believable:
[describe one concrete thing you can back up: a program that opened, a class that ran, a repair you made, a partnership that started]

Write three versions of the same letter, each under 250 words, all in that voice:

1. First gift under [the dollar threshold you use]. Welcomes them, says in concrete terms what their gift pays for, asks for nothing.
2. Repeat donor. Acknowledges this is not their first gift, using [years with us or number of gifts] as a placeholder for the detail.
3. Major gift at or above [your major gift threshold]. Warmer and more personal, closing with an invitation to come see the work rather than another ask.

For every letter:
Leave a clearly marked [personal line] near the opening for the signer to add one sentence in their own words.
Name the designation using [restricted purpose or unrestricted] as a placeholder.
Include a tax acknowledgment sentence and mark it [confirm exact acknowledgment language with your finance lead], since I have not given you our wording.
Do not invent a statistic, a dollar impact figure, a percentage, or a story about a specific person we serve.

Then list every field I would have to fill in for each letter, so I can turn these into a mail merge in our own system.

What to skip in nonprofits and associations

  • Claude does not know what your programs did, and it must never be the source of a number in a grant report. It will produce a participant count, a completion rate, or an impact figure that reads perfectly and is fiction. A fabricated figure in a funder report is not an editing mistake, it is a false statement to a funder, and on a federal award it is a legal matter rather than a writing one. Every figure comes from your own case management, attendance, or accounting records. The prompts above tell Claude to write MISSING DATA and stop, and the whole approach depends on you holding it to that.
  • Donor records do not belong in a consumer chat window. That means names, addresses, giving history, pledge balances, wealth screening notes, employer and matching gift details, and anything carrying a card or bank number. On Free, Pro, and Max plans whether your chats are used to improve Anthropic's models is controlled by the model improvement setting in your Privacy Settings, so open it and decide on purpose instead of assuming, and know that conversations flagged for safety review are a separate exception to that setting. Commercial plans, meaning Team, Enterprise, and Claude for Work, exclude inputs from model training by default. Either way your own donor privacy policy is a promise you already made, so work from initials and placeholders and paste one letter at a time rather than exporting your CRM.
  • No grant submission goes out without a person who runs the program reading every claim in it. Claude will restate an objective in language that sounds better than what your program actually does, and it will happily describe an activity you dropped two years ago because it was in the proposal you pasted. It also cannot see the funder's current guidelines, eligibility rules, or allowable costs unless you paste them in. Someone who knows the program checks the claims, someone who knows the budget checks the costs, and a named human signs. The same goes for your 990 narrative and any response to an audit management letter.

Want all 4 workflows for nonprofits and associations in your inbox?

Every prompt on this page plus the rest, so you still have them on Monday. One email, then four short ones on making it stick. Unsubscribe any time.

Or answer four questions and Claude writes three workflows for your specific business rather than the industry generally.

Before you try it

More for nonprofits and associations

Full guide for nonprofits and associations