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SPECIFICTION
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21CN Mail vs Fastmail Email

21CN Mail

mail.21cn.com

Fastmail Email

fastmail.com

Side by side

Figure21CN MailFastmail Email
Price fromFree$4/mo
Free planYes—
Free trial—Yes
Open source——
WebYesYes
Windows—Yes
macOS—Yes
Linux—Yes
iOSYesYes
AndroidYesYes
API—Yes
Plans published46
Spec score · Personal Email Services8.0 (#67)9.1 (#6)
Ad-free inboxNoYes
Free planYesNo
HeadquartersGuangzhou, ChinaMelbourne, Australia
Mailbox storage165
Platform accessweb_and_mobileweb_mobile_desktop
SupportThe feature page states 24/7 call center response and 5×8 professional technical support.Fastmail says every plan includes expert support from real people, available 24/7.

Plans

21CN Mail

  • 尊贵版Price not published
  • 非凡邮Price not published
  • Free MailFree
  • VIP MailPriced on request

21CN Mail pricing →

Fastmail Email

  • Basic$4 a month
  • Individual$6 a month
  • Standard$6 a month
  • Duo$10 a month
  • Professional$10 a month
  • Family$14 a month

Fastmail Email pricing →

In their own words

21CN Mail

21CN Mail has no write-up on Specifiction yet; its figures are above.

Visit mail.21cn.com

Fastmail Email

Fastmail Email provides email, calendars, contacts, and file storage for individuals, families, and businesses. Mail tools include search, pinning, snooze, scheduled sending, offline support, and private memos on messages. Fastmail says its paid service has no ads, personal-data mining, or third-party sharing. It says customer data is encrypted in transit and at rest, supports TLS 1.3 and Perfect Forward Secrecy, and offers two-step verification and passkeys. Customers can choose the EU or US as their primary data residency. Fastmail offers apps for Windows, macOS, Linux, iOS, and Android, plus a browser app. Access protocols include JMAP, IMAP, POP, SMTP, CardDAV, CalDAV, and WebDAV; OAuth is documented for third-party clients. Fastmail does not provide end-to-end encryption in its own apps, though PGP or S/MIME can be used through supported third-party apps. Plans range from Basic at $4 a month to Family at $14 a month, with different storage and account allowances. The service is paid, has no free plan, and offers a 30-day trial. Every plan includes 24/7 expert support from real people.

Visit fastmail.com