Master every conversation
UnderKey helps you reply smarter in chats and emails by creating AI-powered profiles of your coworkers, clients, or role-play characters.
Free plan available!
What makes conversations hard?
Juggling different communication styles for everyone you connect with can be demanding. Tailoring the right details for each person takes effort. Plus, constantly rewriting similar messages and re-explaining context quickly becomes time-consuming. And sometimes, finding the perfect tone just feels… awkward. Effective communication is vital, yet these everyday complexities often make it a struggle.
Constantly switching between different tones
Each person expects a different communication style
Unique attention to specific details
Some people need more context than others
Writing the same things to different people
Repetitive communication is time-consuming
Starting from scratch every time
Re-explaining context wastes everyone's time
Some messages just feel awkward
Finding the right tone can be challenging
Unlock effortless communication
UnderKey is an AI-powered assistant that adapts to any situation. Whether it's a quick reply to your Spanish-speaking coworker, or prepping for a tricky interview, UnderKey helps you stay in-character with each person — without overthinking it.
Create a chat profile
Give it a name, set a few simple rules — that's it!
Paste the messages
Drop in what your contact said
Adjust the tone instantly
Toggle notes to switch behavior on the fly
Let the magic happen
UnderKey shares the ideal response, from simple translations to fully generated replies
Personalized chat profiles
Build unique profiles for everyone you communicate with. Give them a name and define specific rules, like their preferred language or desired tone.
Tailor every response with smart notes
Activate specific notes for each profile to guide the AI's responses. Want to avoid questions or always end with an emoji? Simply toggle the relevant note on.
Communicate your way
Translate
Instantly translate messages to the profile's language for clearer global communication.
Notes
Jot down key points and have AI generate complete, well-crafted messages for you.
Generate
AI intelligently creates relevant and effective replies based on chat history and your notes.
Intelligent responses, every time
UnderKey doesn't just look at your last message. It considers the entire conversation history to provide the most relevant and contextually appropriate responses.
Use cases
Copywriter
Reply faster to international clients with clear, professional messages in their language and tone.
Developer
Explain complex updates simply, so non-technical clients stay in the loop — without extra typing.
Project Manager
Keep your distributed team aligned with clear, unambiguous updates in any language.
Customer Support Agent
Respond fast with helpful, on-brand replies in your customer's language and style.
Online Teacher
Stay consistent and educational in every message — across languages and time zones.
Personal trainer
Motivate clients in their language with personalized, energetic updates that keep them moving.
HR Manager
Communicate clearly with international candidates and colleagues — always in the right tone, language, and format.
Ready to master every conversation?
Get started with UnderKey today and transform your communication style.
Free plan available!