AI Reply Generator

What is the AI Reply Generator?

The AI Reply Generator is a free tool that drafts a reply to a message from your notes on what the reply should say. You choose where it will be posted, such as email, Slack, LinkedIn, X or SMS, plus a style and a length. The tool writes one draft that follows that platform's usual conventions.

How to use the AI Reply Generator

1. Paste the message you are answering into Original message. Paste only that message, not the whole thread.
2. Write What the reply should say in note form, such as "Decline politely, offer a call next week".
3. Choose Where it lands, a Style and a Length of Short, Medium or Long. Add Context if the reply depends on something the message does not say.
4. Press Generate reply. The draft appears under Generated Reply. If you are not signed in, press Sign up free to unlock to reveal it.
5. Press Copy text, check the length against the platform's limit, and post it.

How should a reply change from platform to platform?

The same sentence reads differently depending on where it lands. "Thanks for flagging this, I have passed it to the team" is a competent support reply, a stiff Slack message, and a corporate non-answer under a public post. Nothing about the words changed. The venue did.

The Where it lands setting tells the model which platform the reply is for and asks it to match that platform's formatting and norms. That covers whether there is a greeting or a sign-off, how much context can be assumed, and how formal the default register is. An email usually opens with a name. A reply in a Slack thread usually does not, and adding one reads as distance.

What are the character limits for replies on X, LinkedIn and SMS?

A post on X is limited to 280 characters unless the account has a paid subscription. A LinkedIn comment is limited to 1,250 characters. A single SMS holds 160 characters in the standard GSM-7 alphabet, and only 70 once one emoji or non-Latin character switches the message to UCS-2, which is how a short reply turns into several billed messages.

Pick Short under Length for X and SMS, and count the draft before you post it anywhere with a hard limit.

What should you tell an AI reply generator to say?

Tell it the outcome you want, in plain notes. A short reply has room for one idea, and you have to pick it. "Decline, but offer a call next week" produces a different reply than "decline and close it out", and a style setting cannot make that choice for you.

Fragments are fine. What matters is that the outcome is stated plainly, because in a two-sentence reply there is nowhere for an unclear instruction to hide. Facts the sender did not write down, such as "third email this week" or "free tier, asking about SSO", go in the Context field.

How do you reply to a public comment or review?

Write it so it still reads well when quoted alone. A reply in a comment thread, a review response or a support ticket can be screenshotted and shared without the message it answered, and a line that is reasonable as a response can look bad on its own.

Before you post, check for four things: sarcasm, an admission of fault you have not confirmed, a mention of another customer, and anything that only makes sense to someone who read the thread above it.