Can I generate emails in different languages?

Yes, the module supports multiple languages and will detect the appropriate one based on your input context.

Is the tone selection customizable?

The module offers several predefined tones like formal, casual, and professional to suit various business needs.

Does it include subject lines?

Absolutely, every generated email comes with a relevant and engaging subject line optimized for the content.

Do I need a credit card to get started?

No. When you sign up you receive 1,000 free tokens to try any module. You only need to pay when you want more tokens.

How many tokens does each call consume?

It depends on the module. Simple validators (email, phone, IP) consume 1 token. More complex modules (URL checker, event planner, LLM modules) consume 2–5 tokens.

emailautomationwritingproductivitycommunication

Email Writer

Generate professional, context-aware emails with customized tones and styles instantly.

An intelligent email generation tool that crafts personalized messages based on specific context, recipient details, and desired communication tone for maximum impact.

POST/api/trpc/emailWriter.write

5 tokens / callAPI online

How it works

Three steps. No complex setup.

Provide Context

Enter the main topic, recipient name, and any specific points you want to include in the email.

Select Tone

Choose the appropriate communication style, such as formal, casual, persuasive, or urgent.

Generate & Refine

The AI generates a complete email draft including a subject line, which you can then review and use.

Who is it for?

Business Professionals

Sales Teams

Customer Support

Marketing Managers

Entrepreneurs

Response example

Real input and output. What you send and what you get back.

// Input

{
  "context": "Following up on our meeting about the Q3 marketing proposal",
  "tone": "formal",
  "recipient_name": "Sarah",
  "sender_name": "Alex"
}

// Output

{
  "subject": "Follow-Up: Q3 Marketing Proposal Discussion",
  "body": "Dear Sarah,\n\nI hope this message finds you well. I am writing to follow up on our productive meeting regarding the Q3 marketing proposal. It was great discussing the potential strategies and I look forward to our next steps.\n\nBest regards,\nAlex",
  "word_count": 145,
  "tone_applied": "formal",
  "language_used": "en",
  "error": null
}

Try it now

// live demo — no account needed to try

Playground

Demo activa5 tokens

context

Integrate into your project

Copy and paste. Replace YOUR_API_KEY with your real key.

curl -X POST https://jsnhengine.com/api/trpc/emailWriter.write \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{"json": {"context":"Following up on our meeting about the Q3 marketing proposal","tone":"formal","recipient_name":"Sarah","sender_name":"Alex"}}'

Why choose JSNH Engine Lab

Low latency

Responses in under 200ms

Secure authentication

API keys with per-plan rate limiting

Usage tracking

Every request logged with metrics

Production ready

Input validation and typed errors

Frequently asked questions

Everything you need to know before integrating.

Other modules

Expand your integration with more APIs from the catalogue.

Email Validator API

Validate email addresses instantly. Detect fake, disposable and invalid emails.

1 token / call →

Phone Validator API

Validate phone numbers from any country. Detect carrier, line type and E.164 format.

1 token / call →

URL Checker API

Verify URL accessibility, detect redirects, and extract SEO metadata instantly.

2 tokens / call →

// production ready