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AI Email Template Generator

Generate professional emails instantly. Choose from 16 email types and 6 tones — get a complete email with 3 subject line options, ready to personalise and send.

16 email types6 tones3 subject lines per emailSpam score hints

Email Settings

Your email will appear here

Choose your settings and click Generate

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How to Write Business Emails That Get Responses

The Subject Line Is Everything

Email marketing data from Mailchimp, HubSpot, and Salesforce consistently shows that subject lines are the single biggest driver of open rates — accounting for 33–47% of whether someone opens your email. The best subject lines are specific (not generic), create curiosity without being clickbait, and signal value to the reader within 40–60 characters. Our generator produces three subject line options per email: a curiosity-based variant, a benefit-based variant, and a direct/factual variant — so you can test different approaches.

Tone Matching: Why It Matters More Than You Think

Research from Harvard Business Review shows that tone mismatches in email — sending a casual email to a formal corporate executive, or a stiff formal email to a startup founder — are among the top causes of ignored outreach. The ideal tone is a function of your relationship with the recipient, their industry culture, and the purpose of the email. Our generator supports six distinct tones: Professional (neutral, widely appropriate), Friendly (warmer, suitable for relationship-building), Formal (structured and precise), Casual (conversational), Urgent (direct and time-sensitive), and Persuasive (outcome-focused). Switching tones produces fundamentally different emails, not just minor word changes.

The Ideal Email Length by Type

Email response rates peak at 50–125 words for cold outreach. Follow-ups perform best at 50–75 words — showing respect for the recipient's time. Proposals and onboarding emails need to be longer (200–400 words) because they're delivering information, not initiating a conversation. Meeting requests should be concise: 75–100 words with a clear CTA. Invoice reminders need just three elements: what's owed, when it's due, and how to pay. Our length presets (Short/Medium/Long) are calibrated to each email type's optimal range.

Avoiding the Spam Folder

Modern spam filters from Gmail, Microsoft Defender, and SpamAssassin use machine learning to assess email content holistically — but trigger phrases still play a significant role. Words and patterns associated with phishing, unsolicited commercial email, and manipulative tactics are weighted against sender reputation. Key offenders include excessive urgency ("ACT NOW," "Limited time"), monetary claims ("Make money," "Earn cash"), and all-caps phrases. Our spam hint feature flags these patterns so you can rewrite before sending. Note: sender domain reputation, authentication (SPF/DKIM/DMARC), and list hygiene matter more than content for long-term deliverability.

Frequently Asked Questions

How does the email template generator work?
The generator uses a database of 96 base templates (16 email types × 6 tones) to produce a customised email body and three subject line options. When you fill in details like your name, company, recipient, and context, those values are injected into the template to produce a personalised result. Everything runs in your browser — no API, no account required.
What email types are supported?
The generator supports 16 common business email scenarios: Sales outreach, Follow-up, Meeting request, Proposal, Thank you, Introduction, Partnership inquiry, Customer onboarding, Invoice reminder, Feedback request, Announcement, Cold email, Referral ask, Complaint response, Welcome email, and Re-engagement. Each type is paired with six tones for 96 distinct template combinations.
What is the optimal email length for business emails?
Research consistently shows that email open rates and response rates are highest for emails between 50–125 words. Cold emails and first-touch outreach perform best at 75–100 words. Follow-ups can be shorter (50–75 words). Proposals and onboarding emails benefit from longer formats (200–400 words) where detail is necessary. Our generator offers three length options calibrated to these benchmarks.
What is a spam score and how does the spam hints feature work?
Spam filters used by Gmail, Outlook, and other email providers scan email content for trigger phrases associated with unsolicited or misleading email. Common triggers include all-caps phrases ("ACT NOW"), excessive exclamation marks, promises of free money, and urgency language that feels manipulative. Our generator scans your email body for known trigger phrases and flags them so you can rewrite those sections before sending.
Can I edit the generated email?
Yes. The email body is fully editable after generation — simply click into the text and type. The word count updates in real time as you edit. You can also toggle to "Preview" mode to see the email in an email-client style layout, which is useful for checking formatting and length before sending.
How do I use generated emails with Odoo Email Marketing?
Copy the generated email using the Copy button, then paste the body into Odoo's Email Marketing module when creating a new campaign or sequence. Odoo Email Marketing lets you send personalised emails to segmented lists, automate follow-up sequences, A/B test subject lines, and track open rates and click-throughs — turning a single great email into a full multi-touch campaign. ECOSIRE can help you implement and configure Odoo Email Marketing for your business.

Ready to Scale Your Email Marketing?

ECOSIRE implements Odoo Email Marketing — a complete platform for segmented campaigns, drip sequences, A/B testing, and real-time analytics. Turn great email templates into automated, measurable growth.

Explore Odoo Email MarketingTalk to a Marketing Expert

Segmented campaigns · Automated drip sequences · A/B testing · Real-time analytics · CRM integration