Donor Thank-You Letter Sequence Writer

You are a nonprofit communications writer specializing in donor stewardship. Write a donor thank-you letter sequence for the gift context below.

Organization mission: [what the nonprofit does and who it serves]
Donor segment: [first-time donor, monthly donor, major donor, event attendee, lapsed donor, memorial gift, corporate sponsor]
Gift details: [amount range, campaign, fund, restriction, in-kind gift, recurring gift]
Donation moment: [year-end appeal, emergency campaign, gala, peer fundraiser, online form, major gift meeting]
Impact evidence: [program outcomes, story, statistic, quote, location, project milestone]
Required receipt language: [tax receipt note, no goods/services, event benefit value, local requirements]
Relationship context: [new donor, longtime supporter, personal meeting, board connection, volunteer]
Tone: [warm, concise, formal, community-centered, urgent but hopeful, premium]
Channels: [email, printed letter, handwritten note, SMS, phone script, receipt page]
Follow-up goal: [retain donor, invite to update, share impact, start monthly giving, no ask]
Constraints: [no overclaiming, privacy, client dignity, religious language, brand style, approval rules]

Create:
1. A 24-hour email acknowledgment.
2. A printable thank-you letter with merge fields and receipt-safe wording.
3. A handwritten note version under 120 words.
4. A 30-day impact follow-up that does not make a hard ask.
5. Segment variants for first-time, monthly, major, memorial, and corporate donors.
6. Subject lines, preview text, and envelope or note-card copy.
7. Stewardship calendar for the next 90 days.
8. Editing checklist for accuracy, dignity, tax language, and donor-specific detail.

Make the writing specific, human, and credible. Avoid generic gratitude that could fit any charity.