# AI Email Writer: Free B2B Email Draft Generator Tool URL: https://esyblog.com/tools/ai-email-writer Type: tool Locale: en Published: 2026-11-13 Updated: 2026-11-14 --- > A free email writer for marketers and founders. Choose an email type and tone, add your offer, and get a short draft with subject lines, checked for length. *Free email tool* ## AI Email Writer: Draft a B2B Email in Seconds Pick an email type, add three details about your offer and your recipient, and get a short draft with subject lines and a word count. Free, instant, no signup. ## Draft your email Choose the email type and tone, fill in the fields, and read the draft below. Subject lines and the word count update as you type. *[Interactive widget — see the live page for the full experience]* ## What happens between your inputs and the draft ### Templates, not a language model Each email type has its own openings, asks and sign-offs, written by an editor. Your details are slotted in, so the draft stays predictable and nothing you type leaves your browser. ### A length check against real data The word counter compares the draft with the 50 to 125 word band that Boomerang found drew the highest response rates in its 2016 study of more than 40 million emails. Edit the text and the count follows. ### Subject lines with a length flag Three subject options come with each draft. Any subject over 50 characters is flagged as likely to be cut off on a phone, which is a rule of thumb rather than a published limit. *Why drafts need an editor* ## A template gets you to the first draft, not the send button The slowest part of an outreach email is rarely the typing. It is deciding what to say first, and that decision is the same every time: who is this for, what do you offer, and what do you want them to do next. A template fixes the order, so you only supply the facts. What a template cannot supply is the reason this person should care. That is why the tool has a field for it, and why the draft reads flat when you leave it generic. One concrete detail about the recipient, and one real result from your side, change the email more than any choice of wording. Boomerang's analysis, published in 2016, found that emails of 50 to 125 words kept response rates above 50 percent, and that rates eased toward 44 percent around 500 words. Short is not magic. It is simply what leaves room for one clear ask. If your draft needs more, it probably contains two emails. - Lead with why you are writing to this person - State your offer in one plain sentence - Add one result you can actually verify - Close with a single, easy ask ## From blank page to a sendable draft 1. **Choose the email type** — Cold outreach, follow-up, meeting request or product announcement. Each one changes the opening and the framing of the ask. 2. **Fill in the facts** — Add the recipient, your company and your offer in one line. Include the reason you are writing to them, since that field does most of the work. 3. **Cycle through the variants** — Press the variant button to swap the opening, the ask and the subject lines. Keep the version that sounds like something you would say. 4. **Edit, check and copy** — The draft box is editable. Replace anything generic, watch the word count stay in range, then copy the email and the subject line. ## Common questions about this email writer ### Is this AI email writer free? Yes. There is no signup, no run limit and nothing to install. The page is the tool, and everything happens in your browser. ### Does it actually use AI? No. It assembles drafts from fixed editorial templates, using the details you type in. That keeps the output predictable and instant, and it means nothing you enter is sent to a model or a server. Treat the result as a first draft for a human to edit, not finished copy. ### Where does the 50 to 125 word range come from? From a 2016 analysis by Boomerang of more than 40 million emails, which found response rates above 50 percent for messages between 50 and 125 words. It is an observation about replies to ordinary email, not a guarantee for your market, so use it as a guardrail rather than a rule. ### Why does the tool show subject line lengths? Inbox apps cut long subjects short, and mobile screens cut them sooner. The tool flags anything over 50 characters as likely to be truncated. That figure is a working rule of thumb, not a published limit, because each mail client truncates differently. ### Can I send the draft as it is? You should not. The templates cannot know your recipient, so the draft needs at least one specific detail about them and one real result from your side. If the draft still contains square brackets, a field is empty. ### What is the difference between the variants? Each variant changes the opening line, the wording of the ask and the subject lines, while the facts you entered stay the same. Cycle through them and keep the one that sounds most like you. ### Is the email text stored anywhere? No. The draft lives in the text box on this page. Closing or reloading the tab clears it, so copy anything you want to keep. The only thing recorded is an anonymous count that the tool was used. ## Emails are one step in a longer editorial chain EsyBlog produces articles with the same discipline: a method first, then the volume. See the demo. *Call to action: See the demo* ## FAQ ### Is this AI email writer free? Yes. There is no signup, no run limit and nothing to install. The page is the tool, and everything happens in your browser. ### Does it actually use AI? No. It assembles drafts from fixed editorial templates, using the details you type in. That keeps the output predictable and instant, and it means nothing you enter is sent to a model or a server. Treat the result as a first draft for a human to edit, not finished copy. ### Where does the 50 to 125 word range come from? From a 2016 analysis by Boomerang of more than 40 million emails, which found response rates above 50 percent for messages between 50 and 125 words. It is an observation about replies to ordinary email, not a guarantee for your market, so use it as a guardrail rather than a rule. ### Why does the tool show subject line lengths? Inbox apps cut long subjects short, and mobile screens cut them sooner. The tool flags anything over 50 characters as likely to be truncated. That figure is a working rule of thumb, not a published limit, because each mail client truncates differently. ### Can I send the draft as it is? You should not. The templates cannot know your recipient, so the draft needs at least one specific detail about them and one real result from your side. If the draft still contains square brackets, a field is empty. ### What is the difference between the variants? Each variant changes the opening line, the wording of the ask and the subject lines, while the facts you entered stay the same. Cycle through them and keep the one that sounds most like you. ### Is the email text stored anywhere? No. The draft lives in the text box on this page. Closing or reloading the tab clears it, so copy anything you want to keep. The only thing recorded is an anonymous count that the tool was used.