Fastmail Masked Email
Fastmail Masked Email creates a separate random alias for each login, helping keep a real email address private and making it harder for companies to link ad…
What Fastmail Masked Email is
Fastmail Masked Email creates a separate random alias for each login, helping keep a real email address private and making it harder for companies to link addresses for tracking. Fastmail suggests using a new alias for each site account. Messages to these addresses show a masked icon, and opening a message reveals the label assigned to that address. If an alias starts receiving spam, it can be turned off; Fastmail says this may help identify who leaked it.
Masked Email can connect with 1Password and Bitwarden. Users can also use their own domain, though Fastmail says that is less anonymous than its shared domain and makes addresses portable. A JMAP extension lets apps read and manage aliases, but pending addresses are automatically deleted 24 hours after creation and do not appear in the Fastmail interface. Fastmail says every plan includes expert human support.
Good
- Creates a separate random alias for each login.
- Aliases can be turned off if they receive spam.
- Connects with 1Password and Bitwarden.
- A JMAP extension supports alias management.
Watch out
- There is no free plan.
- Pending aliases are deleted after 24 hours.
- Using a custom domain is less anonymous than the shared domain.
- Fastmail does not offer end-to-end encryption in its own apps.
Who it suits
It suits people who want separate email aliases for logins and the option to disable an alias that receives spam. App developers may be interested in the JMAP extension for managing aliases.
Verdict
Fastmail Masked Email offers per-site aliases and controls for disabling them, alongside app integrations and a management extension. Its custom-domain option is less anonymous, and its own apps do not offer end-to-end encryption.
Plans and prices
From Fastmail Masked Email's own pricing page, checked 21 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Duo | $10 a month | 2 users · 50 GB storage per user · monthly |
| Family | $14 a month | Up to 6 users · 50 GB storage per user · monthly |
| Business Basic | $4 a month | 5 GB mail storage · 1 GB file storage · monthly |
| Business Standard | $6 a month | 50 GB mail storage · 10 GB file storage · monthly |
| Business Professional | $10 a month | 100 GB mail storage · 50 GB file storage · monthly |
| Standard | — | 60 GB total storage per user · custom business addresses · Masked Email |
| Individual | — | 60 GB total storage · Masked Email · 24/7 expert support |
| Professional | — | 100 GB mail, calendar and contacts storage per user · 50 GB file storage per user · Masked Email |
| Basic | — | 6 GB total storage per user · 24/7 expert support |
The facts
Each one read from Fastmail Masked Email's own pages, with the date it was checked.
What it does
- Account protection
- Fastmail supports two-step verification and passkeys, and says it conducts internal security audits and runs a bug bounty program.checked 30 Sep 2026
- Address behavior
- Masked Email addresses are random aliases intended for logins, and Fastmail suggests using a new one for each site account.checked 30 Sep 2026
- API
- Fastmail provides a JMAP extension that lets apps read and manage a user's Masked Email addresses.checked 30 Sep 2026
- API limit
- Pending masked addresses are automatically deleted 24 hours after creation and are not shown in the Fastmail interface.checked 30 Sep 2026
- Attachment limit
- 50checked 21 Sep 2026
- Custom domain
- You can use your own domain for Masked Email, though Fastmail says this is less anonymous than using its shared domain and makes addresses portable.checked 30 Sep 2026
- Disable addresses
- You can turn off a Masked Email address if it starts receiving spam, and Fastmail says this can help identify who leaked it.checked 30 Sep 2026
- Encryption limit
- Fastmail does not offer end-to-end encryption in its own apps, but says customers can use PGP or S/MIME in many third-party apps.checked 30 Sep 2026
- Inbox identification
- Messages to Masked Email addresses display a masked icon, and opening one shows the label assigned to that address.checked 30 Sep 2026
- Integrations
- Fastmail says Masked Email can connect with 1Password and Bitwarden for smoother signups.checked 30 Sep 2026
- Mailbox storage
- 5checked 21 Sep 2026
- Purpose
- Masked Email creates a unique address for each login to keep your real address private and make addresses harder for companies to link for tracking.checked 30 Sep 2026
- Security
- Fastmail says data is encrypted at rest and communications are encrypted in transit, with support for TLS 1.3 and Perfect Forward Secrecy.checked 30 Sep 2026
- Support
- Fastmail says every plan includes expert human support, and its pricing page advertises 24/7 support.checked 30 Sep 2026
The company
- Company
- Fastmail says it has operated since 1999 and is headquartered in Melbourne, Australia.checked 30 Sep 2026
- Founded
- 1999checked 28 Sep 2026
- Headquarters
- Melbourne, Australiachecked 28 Sep 2026
Money
- Free plan
- Nochecked 21 Sep 2026
Where it runs
- Platforms
- Fastmail lists apps for Windows, macOS, Linux, iOS and Android, plus a browser app.checked 30 Sep 2026
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