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The ultimate simple, secure and reliable email service. End-to-end encryption, AI categorization, and seamless cross-device sync redefine your inbox experience.

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Z
Mingyuan Zhang10:24
About 527mail Business Partnership
Thank you for your interest in 527mail, we have prepared...
AI
AI Assistant AI09:50
Weekly email summary generated
You received 47 emails this week, 3 marked as important...
L
Xue LiYesterday
Weekend dinner location poll
Which of these restaurants do you prefer? Poll closes Friday...
G
GitHub昨天
[527mail/repo] New pull request merged
Feature: Add dark mode support — Reviewed and merged...

About 527mail Business Partnership

From Mingyuan Zhang <zhang@example.com> · 10:24

Hello,

Thank you for your interest! We have prepared a customized enterprise plan, including:

  • Custom domain emails (unlimited)
  • Team collaboration and shared calendar
  • Dedicated account manager 7x24 support

Looking forward to further communication.

— Mingyuan Zhang · 527mail Business Team

AI Suggestion: This is a business email, reply with a 'professional' tone.
End-to-End Encryption
Military-grade protection
0.3s blazing delivery
Global node acceleration

Trusted by 2M+ users and teams worldwide

● Acme Corp ● Nimbus ● Quantum ● Vertex ● Horizon ● Polaris
Core Features

Modern Email Built for

Not just sending and receiving, but your smart work hub

AI Assistant

Auto-categorize, summarize, translate, and smart-reply. Let AI handle 90% of your routine emails.

End-to-End Encryption

Using E2EE technology, only you and the recipient can read the contents. Even we cannot see them.

Anti-Phishing & Spam

AI identifies phishing and spam in real-time with a 99.7% block rate to protect your security.

Cross-Platform Sync

Real-time sync across iOS, Android, macOS, Windows, and Web. Switch devices seamlessly.

Built-in Calendar & Tasks

Email, calendar, and tasks integrated. Important events are automatically extracted into your to-dos.

Custom Domain

Support for binding your own domain (you@yourname.com) for a professional image.

Why Choose 527mail

Simple, but

Every detail is designed for you who pursue perfection

01

Blazing Fast

Based on our self-developed distributed architecture with 200+ global nodes, email delay is as low as 0.3s.

02

Privacy First

Zero ads, zero tracking, zero data sales. Your emails belong to you, compliant with GDPR.

03

Smart & Efficient

AI auto-categorization, priority sorting, and one-click summaries save you 30 mins daily.

04

Eco-Friendly

Our data centers run on 100% renewable energy, making every email greener.

Pricing Plans

Choose Your

The free version covers daily needs. Upgrade anytime for more features.

Free
¥0/forever

For personal daily use

  • 1GB Storage
  • Single Device Login
  • Basic Anti-Spam
  • Web + Mobile
  • AI Assistant
Get Started Free
Most Popular
Pro
¥9/month

For professionals and small teams

  • 50GB Storage
  • Multi-device Sync
  • End-to-End Encryption
  • AI Assistant
  • Custom Domain × 1
Subscribe Now
Enterprise
¥29/user/mo

For enterprise and team collaboration

  • Unlimited Storage
  • Team Collab + Shared Calendar
  • Unlimited Custom Domains
  • 24/7 Dedicated Support
  • SSO Login
Contact Sales
Testimonials

Loved by Users on 527mail

"Finally found an email app that is both simple and powerful! The AI summary saves me tons of time daily. Beautiful design too."

C
Siyuan Chen
Product Manager · Internet Co.

"Moved the whole team to 527mail. Zero ads, secure encryption, easy collaboration. Fast support."

L
Xiaowen Lin
CTO · Startup

"As an indie dev, privacy matters most. 527mail's E2E encryption gives me peace of mind. Elegant UI."

W
Haoran Wang
Indie Developer
FAQ

Got Questions? We Have Answers

Is 527mail free?

Yes, we offer a forever-free 1GB plan. Pro and Enterprise plans unlock advanced features.

Is my email data secure?

We use E2EE. All emails are encrypted during transfer and at rest. Only you and the recipient can read them.

How to migrate from other providers?

We offer a 1-click migration tool supporting Gmail, Outlook, etc., to move all your history seamlessly.

What devices are supported?

We support Web, iOS, Android, macOS, Windows, and provide IMAP/SMTP for third-party clients.

Can I use my custom domain?

Pro supports 1 custom domain, Enterprise supports unlimited. We provide full DNS setup guides.

Is there an Enterprise trial?

All enterprise plans offer a 14-day free trial, no credit card required, cancel anytime.

Ready to Experience the Next-Gen Email?

Join 2 million users and make email management a joy.

No credit card required · 30s setup · Cancel anytime