
Generate professional letters instantly with AI. Create personalized business, cover, and formal letters in seconds with smart automation.














Easy as one, two, three.
Describe your agent
Ask Lindy what to do and watch it build your Agent in minutes.
Connect your apps
Hundreds of integrations available.
Let AI do the work
Give custom instructions to your agent, all in natural language.
Use-cases
Save hours writing professional letters
Turn time-consuming letter writing into seconds. Generate business correspondence, cover letters, and formal communications instantly, freeing hours for strategic work and core business activities.
Eliminate writing errors
Ensure correct grammar and consistent professional formatting. Reduce typos, awkward phrasing, and structural errors that can undermine credibility with clients, employers, and business partners.
Overcome writer's block instantly
Provide immediate inspiration and structured drafts for any letter type, including openings, body paragraphs, and closings for thank-you notes, complaint letters, cover letters, and more, so you can go from blank page to editable draft without delay.
Maintain consistent professional communication
Ensure every letter meets professional standards regardless of your writing ability. Standardize tone, formatting, and terminology across correspondence to maintain a consistent brand voice and build recipient trust.
Scale business communication effortlessly
Handle high volumes of correspondence without hiring additional staff by automating drafting and personalization. Generate customer responses, HR communications, and business letters at scale while maintaining consistent tone and recipient-specific details.
Learn more
Define Inputs
Require seven fields: job posting, resume, role, skills, metrics, tone, and company keywords.
Build Prompt
Validate and normalize inputs: confirm job posting and resume are present; extract job title, company name, primary responsibilities, required and preferred skills, and measurable performance metrics from the posting; extract resume roles, dates, achievements with metrics, and skill keywords; standardize skill terminology and map resume achievements to job requirements. Identify company-specific keywords for ATS inclusion, flag missing or ambiguous fields for manual review, and record desired tone and maximum letter length.
Test and Export
Create 5–10 sample job/resume pairs to validate prompts. Refine required keywords and synonyms mapped to resume sections. Define three tone options: professional, conversational, concise. Add editable fields for role, skills, metrics, and company keywords. Support export to PDF, DOCX, and email.
Benefits
Tailored cover letters in seconds
Paste a job posting and your resume; the generator creates a personalized, ATS-friendly cover letter in seconds, highlighting the role’s most relevant skills, experience, and keywords.
Automate repetitive business correspondence
Generate multiple tailored drafts from a job posting and resume, each emphasizing role-specific skills, achievements, and ATS keywords, and including suggested openings, closings, and export-ready formatting.
Consistent brand voice and tone
Save a style guide once, then generate letters that match your brand voice with consistent formatting, sign-offs, and letterhead.
Error-free, professional polish
Built-in grammar, clarity, and formatting checks enforce correct salutations and addresses, consistent structure, and professional layouts, reducing typographical and formatting errors in business, cover, and formal letters.
Personalization at scale
Use merge fields and dynamic snippets to generate dozens of customized letters at once from your CRM, ATS, or a spreadsheet, for outreach, references, reminders, approvals, and follow-ups, with recipient-specific details.
Faster turnaround and higher productivity
Generate first drafts in seconds to meet deadlines and reduce writer’s block, letting your team focus on strategy while AI handles routine drafting.
FAQ
How does an AI Letter Writing Generator turn a job posting and resume into a personalized, ATS-friendly cover letter?
An AI Letter Writing Generator follows a three-step workflow for cover letter optimization: 1) Define Inputs: add the job posting, resume, target role, key skills, quantifiable metrics, preferred tone, and company keywords; 2) Build Prompt: assemble structured prompts/templates that align to the job description for ATS-friendly formatting and keyword coverage; 3) Test and Export: generate samples, refine keywords and tone, apply edit controls, then export to PDF, DOCX, or email. Including job-specific keywords and clean, readable formatting helps cover letters align with ATS criteria and recruiter expectations.
How can an AI Letter Writing Generator handle different letter types beyond cover letters, such as business correspondence and formal communications?
Using an AI Letter Writing Generator as a drafting assistant is generally acceptable when the final letter is personalized, accurate, and written in your authentic voice. Some tools can detect patterns of AI-generated text, so customization matters. Surveys indicate mixed attitudes toward AI-written application materials, with roughly one-third of respondents finding AI-generated cover letters acceptable, reinforcing the value of human editing and tailoring.
Will an AI Letter Writing Generator keep brand voice consistent for business letters and formal correspondence?
An AI Letter Writing Generator can lock in a style guide once and produce business, cover, and formal letters in a consistent brand voice—formal, friendly, or executive-ready—with uniform formatting, sign-offs, and letterhead. Smart automation handles repetitive correspondence (follow-ups, thank-you notes, meeting recaps, proposal transmittals, client introductions, and apology/complaint responses) while merge fields fill names, dates, and details for polished professional letters at scale.
What data privacy and security practices should be followed when using an AI Letter Writing Generator with resumes or client details?
Follow data-minimization and security best practices: avoid pasting sensitive personal or proprietary information unless necessary, prefer enterprise privacy controls, review retention policies, use secure networks and MFA, and export locally when feasible. Leading guidance emphasizes safeguarding personal, protected, and proprietary information when using generative AI and being vigilant about risks like data leakage and unauthorized use.
Do applicant tracking systems scan cover letters, and how does an AI Letter Writing Generator help with ATS optimization?
Some employers scan cover letters with applicant tracking systems; practices vary. Aligning content and formatting improves visibility. An AI letter-writing generator optimizes for ATS by mirroring job-description keywords, using clear sectioning and standard fonts, and avoiding complex layouts that can break parsing. These steps can increase the likelihood of passing automated screening and attracting recruiter attention.
Can an AI letter writing generator personalize at scale and export letters to PDF, DOCX, or email for CRM/ATS workflows?
An AI letter-writing generator converts a job posting and resume into a personalized, ATS-friendly cover letter by: 1) extracting inputs — job description, resume content, target role, key skills, quantifiable achievements, preferred tone, and company keywords; 2) assembling structured prompts or templates that mirror the job description, prioritize ATS keywords, and use simple, standard formatting and fonts; 3) generating and testing samples, refining keyword coverage and tone, applying edit controls, and exporting the final letter to PDF, DOCX, or direct email. For scale, it uses merge fields and dynamic snippets from a CRM/ATS or spreadsheet to produce dozens of tailored letters while preserving individualized details.
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