Everything you can do with
email + AI.
From your first reply in 30 seconds to building custom agents that know your business. Browse below — or see plans & fair use if you're here for the pricing.
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Try the Demo — No Signup
Email `demo@slyreply.ai` from any address and get an AI reply within 30 seconds. Zero signup, zero card.
How SlyReply Works
SlyReply turns your email inbox into an AI-powered assistant. Send an email, get an intelligent reply — no app required.
Plans & Pricing
What the Free, Pro, and Power plans include, and how SlyReply's flat-rate billing works.
Advanced Features
4 articles
Processing Email Attachments
SlyReply agents on Pro and Power read PDFs and images you attach to emails. Other document formats aren't read yet — paste the text or convert to PDF.
Forwarding Emails for AI Review
Forward any email thread to a SlyReply agent and ask for a summary, analysis, or suggested reply.
Conversation Threading
Reply to keep context flowing — and SlyReply never stores a copy of your conversation.
Customizing Your Agents
Modify system prompts, temperature, and tone settings to create personalized copies of any SlyReply agent.
Getting Started
7 articles
Try the Demo — No Signup
Email `demo@slyreply.ai` from any address and get an AI reply within 30 seconds. Zero signup, zero card.
How SlyReply Works
SlyReply turns your email inbox into an AI-powered assistant. Send an email, get an intelligent reply — no app required.
Sending Your First Email
A step-by-step guide to sending your first message to a SlyReply agent and receiving an AI-powered reply.
Account Setup
How to register your SlyReply account, verify your email, and start exploring the agent catalog.
Create Your Own Agent
Build a completely custom AI agent with your own system prompt, personality, and expertise — then email it like any other agent.
Why SMTP? The Power of AI Over Email
SMTP is the oldest and most universal protocol on the internet. Here is why it makes the perfect transport layer for AI.
Two-Factor Authentication (2FA)
Add an authenticator-app code on top of your password to protect your SlyReply account — and how to get back in if you lose your authenticator.
Reference
6 articles
Available Agent Categories
Over 220 pre-built agents across text and image generation. Find the right one for your task in under a minute.
Plans & Pricing
What the Free, Pro, and Power plans include, and how SlyReply's flat-rate billing works.
Fair Use & Limits
How SlyReply's fair-use policy works — a short cooldown after a busy burst, and the generous monthly limits behind it.
Conversation & Attachment Limits
How SlyReply manages long email threads and large attachments to keep replies fast and accurate.
No Surprise Bills
Flat-rate billing means your bill is your plan price — no per-message charges, no overage fees, no metering.
Exporting Your Data
Download a JSON copy of everything SlyReply holds about you — your profile, your agents, conversation metadata, and any support tickets. Message bodies are never stored, so they're never in the file.
Use Cases
11 articles
Legal Document Review
Use Lizzy the Lawyer to review contracts, NDAs, and legal documents directly from your inbox.
Language Translation
Translate emails and documents between languages by sending them to one of SlyReply's nine language translation agents.
Code Review via Email
Get instant code reviews by emailing code snippets or files to DJ Debug or Code Reviewer Rex.
Customer Support Automation
Set up Sunny the Support Star to handle customer inquiries for your team using email forwarding.
Creative Writing Assistant
Brainstorm ideas with Poet Penelope, get story feedback from Novelist Nora, and explore creative projects via email.
Education & Tutoring
Students can email Professor Pat for clear, patient explanations on virtually any academic topic.
ChatGPT via Email — Use AI Without an App or Extension
Use ChatGPT-class AI over plain email — email a SlyReply agent and get an expert reply back. No app, no browser extension, no API key.
The Forward-and-Reply Workflow
Use SlyReply as a drafting assistant: forward emails to an agent, get a crafted draft, then review and edit it before you reply.
Generating Images by Email
Email an Image Studio agent — get a generated image attached to the reply. No app, no UI.
Claude AI via Email — No Zapier, No Code
Use Anthropic's Claude over plain email with SlyReply — no Zapier, no scripts, no API key. Email an agent and the reply comes back.
How to Use AI Without an App or Browser Extension
Use AI without installing anything — no app, no extension, no new login. Email a SlyReply agent from any client and get a reply back.
Can't find what you're looking for?
Try the demo. Email demo@slyreply.ai.
Most questions are easier to answer by sending an email and seeing what you get back. No signup required.
Or sign up to get your own agents →