Partner Story ยท in conversation with Shuvo Anirban Roy, solo founder of Voxily. This is a written interview submitted through Submit Your Story. The claims below are the founder's own, presented as they were given to us. No payment was involved.
Shuvo Anirban Roy, founder of Voxily. Photo supplied by Shuvo Anirban Roy, from his personal website, shuvoanirbanroy.com.
A good reply on LinkedIn looks like it took thirty seconds. For Shuvo Anirban Roy, it often took much longer. Read the post. Work out the point. Decide what to say. Find the right English words. Fix the grammar. And then check the whole thing one more time, because it still had to sound like him.
"English isn't my first language," Roy says. "As I started thinking more seriously about engaging with people on social media, I realised how much of that work happens in replies and comments. But replying took me a long time."
Voxily is what he built to get that time back. Roy is the solo founder, based in Dhaka, Bangladesh. Voxily is a live Chrome extension that drafts replies while you read conversations on X, LinkedIn and Reddit. The AI writes the first draft. The person reviews it, edits it and presses send.
Many small jobs inside one reply
The moment behind the product, Roy says, was seeing how many separate tasks were packed into a single reply. "It was not just grammar. Reading carefully, choosing the right words and preserving my own voice all took attention."
What he wanted was a first draft in his own style. If it needed changes, he could make them. If it was already right, he could use it as it was. Either way, the time saved would go to the rest of his work.
That is still the promise of the product: help with finding the words, without handing over the decision about what gets published.
How it works: right inside the reply box
Voxily appears as a small icon inside the reply box on X, LinkedIn and Reddit, so there is no copying text between tabs. You pick a mood, such as Friendly, Witty, Thoughtful, Professional or Networking, and get a draft. There are eight moods on every plan.
Three things shape each draft. A persona holds the user's role, tone and writing preferences. An optional knowledge base holds facts the user wants the AI to get right; it can be typed in or uploaded as a PDF, Word or text file. And on the Pro plan, Brand Mode can add product context for founders who want to mention what they are building.
There are a few more tools around the main one. Fix My Reply tightens a rough draft the user has already written, without turning it into a sales pitch. Voxily Chat, a side panel, helps work through a reply or a post. Pro users can also draft direct messages.
What Voxily never does is post. "It does not publish automatically," Roy says. The user's final click is the only posting action.
The AI under the hood
The text itself is generated by AI, so it sits at the very centre of the product. The selected conversation and the user's writing inputs pass through a Cloudflare Worker to Groq, which runs open-weight GPT-OSS models, with 20B and 120B options. Convex handles sign-in and stored app data.
"The work is more than making a model call," Roy says. Before the model writes anything, the service works out which comment the user is actually replying to, and it keeps any qualifications attached to the facts it pulls from the knowledge base. After the model writes, the output gets checked.
The optional three-reply setting on Pro is a good example. It now asks the model for structured output and validates each of the three options, with a limited repair step if something comes back wrong. If it still cannot produce a valid set, it returns an error instead of filling the screen with duplicates or text that has nothing to do with the thread. The model can still make mistakes, he says, which is exactly why review stays part of the workflow.
Voice, facts and task kept apart
Roy is clear about what Voxily is not. It is not a scheduling suite, and it does not monitor keywords in the background. It drafts inside a conversation the user has already chosen to join.
Inside that conversation, he keeps three things separate: the voice, the facts and the task at hand. A mood changes how a reply sounds, but not who the writer is or what is true. An instruction typed for this reply takes priority over a saved default purpose.
"Other tools may fit publishing, discovery or team management better," he says. "I want people to judge the task they actually need help with."
The lesson: the starting context matters
Building Voxily taught Roy one practical thing above all. Adding more moods does not help on its own.
"Adding more moods alone does not tell the model who the writer is, which facts are reliable or which comment needs an answer," he says. That is why persona, knowledge and the selected conversation each have their own role in the product. "The goal is to make a useful starting draft, not to make every reply sound more polished in the same way."
Where it stands today
Voxily is live in the Chrome Web Store, with a public site that explains the product and the setup. Roy is keeping customer, revenue and cost figures private for now.
The pricing is public. According to the Voxily site, the free plan needs no credit card and includes 10 replies a day, one persona and five knowledge entries. Pro costs $12.99 a month or $120 a year and adds higher allowances, three labeled variations per reply, a Custom mood, Brand Mode and DM drafting.
What comes next
The next release is meant to make the starting voice easier to set up: ten onboarding questions, then a review screen, with the resulting profile and knowledge still fully editable. The backend for it is already deployed. The new extension interface is not yet in the Chrome Web Store.
Roy is looking for people who already reply regularly and are willing to try Voxily on one real conversation, then tell him what they kept and what they rewrote. "I want specific feedback about that task," he says. Voxily is free to try at getvoxily.com.
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This is a Partner Story: a written interview with a founder building with AI, submitted through Submit Your Story and published free of charge. Statements about the company's product, users and pricing are its own. Building something with AI? Tell us about it.
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