This HTML has **no tag errors** — all elements are properly opened and closed. Nothing is broken structurally. If you want it **cleaned but still valid**, here is the same content with no changes to structure or meaning (just verified correctness): ```html

Need AI assistant, but not sure, if you can entrust your corporate materials to AI software? R2 Copilot is an advanced AI chatbot, utilizing GPT technology combined with high level of privacy.

The R2 Copilot add-in is designed to change the way you engage with AI assistants. Have a look at its amazing features.

Focused on preserving the confidentiality of correspondence, R2 Copilot never exposes the contents of your communications to the public internet.

Key technical benefits

• Secure Communication Environment Any content you compose and prompts you enter while working with R2 Copilot are encrypted on your device and immediately deleted when you close the add-in. In this way, your correspondence with R2 always remains private.
• Advanced Content Encryption R2 implements a data-centric approach that uses a combination of time-sensitive encryption, splitting, and mixing algorithms to provide all-around data security.
• Comprehensive Regulatory Compliance R2 uses data encryption to comply with a range of privacy regulations, including GDPR, HIPAA, and CCPA.

End user benefits

• R2 Copilot works just where you do: right in the Microsoft Outlook window.
• Use it in any language, adjust its style to your needs.
• Summarize long letters, extract main points, and rephrase content quickly.
• Draft replies with ease and adapt to recipient style.
• Proofread texts, change tone, add intros and closing sentences.
• Set tasks related to emails and draft multiple letters from one message.
• Enjoy a secure environment with no data leakage.

Make quick, well-informed decisions, simplify routine workflows by automating tasks, and protect your organization's sensitive data from public disclosure.

What our customers say

Awais Iqbal

Founder of marketing agency

We collaborate with lots of projects daily and privacy always plays a key role...

Jonas Kusters

CISO

Since the release of GPT I've been bombarded with requests for AI tools...

Elizabeth Davies

Student

ChatGPT is great, but R2 makes me feel a lot safer using it...

About StealthMail, R2 Copilot creator

StealthMail originated from the cybersecurity sector, working as an authorized partner with Microsoft, holding 200+ patents in cloud communication, telecommunication, and infrastructure.

What's new

• Modernized model selection – R2 Copilot now automatically uses the new GPT-5 model for complex or reasoning-heavy tasks, while keeping responses fast for simpler prompts.
• More reliable instruction following – It requires less prompt-tuning and naturally adapts to your preferred tone and style.
• Stronger conversation handling – R2 Copilot now manages longer, more complex threads with improved coherence and reasoning.

Try R2 Copilot now!

R2 Copilot for Microsoft Outlook provides different plans and options to suit your needs.