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SPECIFICTION
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BT Email vs Fastmail Email

BT Email

bt.com

Fastmail Email

fastmail.com

Side by side

FigureBT EmailFastmail Email
Price from£7.50/mo$4/mo
Free planYes—
Free trial—Yes
Open source——
WebYesYes
Windows—Yes
macOS—Yes
Linux—Yes
iOSYesYes
AndroidYesYes
API—Yes
Plans published36
Spec score · Personal Email Services8.1 (#58)9.1 (#6)
Email aliasesYesYes
Company historyBT says its roots trace to the Electric Telegraph Company, founded in 1846.Fastmail says it has provided independent email service since 1999 and is headquartered in Melbourne, Australia.
Custom domainNoNo
Free planYesNo
HeadquartersBT Group plc lists its registered office at 1 Braham Street, London, E1 8EE.Melbourne, Australia
IntegrationsThe BT Email app only allows adding BT addresses ending in @btinternet.com, @btopenworld.com or @talk21.com.Fastmail lists integrations with 1Password, Dropbox, YouCanBookMe, SavvyCal, SaneBox, Bitwarden, and Morgen.
Platform accessweb_and_mobileweb_mobile_desktop
SupportBT lists UK-based technical support for Standard, Premium and Basic email; Premium support and cancellation are available by phone during stated weekday and weekend hours.Fastmail says every plan includes expert support from real people, available 24/7.

Plans

BT Email

  • Premium£7.50 a month
  • BasicFree
  • StandardFree

BT Email 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

BT Email

BT Email has no write-up on Specifiction yet; its figures are above.

Visit bt.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