Key takeaways
- A vague prompt produces a generic email; the reader and the angle make the difference.
- Set a length limit and a single call to action in every prompt.
- Tell the assistant what to leave out, such as flattery and feature lists.
- Check every fact and claim in the draft before sending.
What should an AI email prompt include
An AI email prompt should include everything a good colleague would ask before writing for you. If a detail is missing, the assistant fills the gap with something safe and generic.
- The reader: job title, company and what they care about.
- The angle: the one problem or trigger you are writing about.
- The proof: one fact or example you can stand behind.
- The length: a word limit or a sentence count.
- The voice: plain, warm, direct, or your saved brand voice.
- The ask: one question or next step.
- The exclusions: no flattery, no feature list, no invented figures.
Which prompts for cold emails can you adapt
Start with a prompt for the first touch, then ask for variations rather than writing a new prompt each time. Replace the square brackets with your own details.
- Write a first cold email to [job title] at [company]. Lead with [trigger or problem]. Use one proof point: [proof]. Keep it under 90 words, in plain British English, ending with one question. No flattery and no feature list.
- Write two subject lines under six words for that email, one direct and one that raises a question.
- Rewrite the email for a more technical reader: keep the length, and swap the outcome for a sentence on how it works.
- Give me two versions that open differently, so I can choose.
Which prompts help with follow-ups and replies
Follow-up prompts work best when they forbid repetition and ask for one new thing. Reply prompts work best when they paste the prospect's words in full.
- Write a second touch to [name] that adds one new thing: [insight]. Do not repeat the first email or open with a check-in phrase.
- Here is the prospect's reply: [reply]. Answer their exact question first, then propose one next step.
- Is this incoming message worth answering? Explain why in two sentences.
What changes between a weak and a strong prompt
The strong prompt changes the opening line, the length and the ask. An illustrative weak prompt, "Write a sales email for our product", tends to return a paragraph about the sender, a list of features and a request for thirty minutes.
An illustrative strong prompt names a finance director at a growing logistics firm, the trigger of a new warehouse opening and a 70-word limit. The draft then opens with the warehouse, makes one point about month-end reporting across sites and asks whether that is on their list this quarter.
What should you never leave to the prompt
Never leave facts, figures or names to the assistant. If the prompt does not supply a proof point, the draft may invent one that sounds right.
Read every draft as the recipient would before it goes out. Check that each claim is true, that the tone fits your company and that nothing confidential from another account slipped in from your notes.
Where Pebbles Ai fits
- CapabilityOutreach contentThe assistants write outreach in chat: a new outbound message, a reply, a follow-up or a check on whether an incoming message is worth answering. Email drafts are saved in your connected Gmail or Outlook mailbox.
- FoundationCompany IntelBrand voice in Company Intel shapes the drafts, so your prompts can focus on the reader and the angle instead of describing your tone each time.
- CapabilitySmartboxIn Smartbox, Write with AI uses the thread, the recipients and your brand voice, with a personality picker for the tone of each reply.
Common questions
Do longer prompts produce better sales emails?
Longer prompts help when the extra lines are context about the reader and the angle. Extra instructions about style alone rarely improve the draft.
Can one prompt work for every prospect?
One prompt structure can, with the reader, trigger and proof changed each time. The same filled-in prompt for everyone produces the same email for everyone.
Should I paste a prospect's public posts into the prompt?
A short, relevant extract about their work can sharpen the opening line. Keep it to professional content and check the draft does not over-reference it.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .