Home/Compare/Fastmail Masked Email·Updated October 2026

AliasFleet vs Fastmail Masked Email

Fastmail Masked Email is built for subscribers who use Fastmail as their primary hosted mailbox. AliasFleet works with any inbox you already use (Gmail, Outlook, Proton, Apple Mail) and adds PGP encryption, server-side tracker stripping, Email X-Ray, and webhooks.

AliasFleet
AliasFleet(Editorial Team)·Reviewed by Ahsan Luqman (Founder)
·6 min read

Overview#

Fastmail is a full hosted email provider with calendar, contacts, and JMAP support. Its Masked Email feature lets Fastmail subscribers generate aliases inside the Fastmail web app or through a 1Password integration.

Because Masked Email is part of a hosted mailbox, using it typically means paying for a Fastmail subscription (no permanent free tier, only a 30-day trial) and reading your mail inside Fastmail. Fastmail also does not offer server-side PGP encryption on incoming mail or HTTP webhooks for developers.

AliasFleet is a dedicated alias router that works with the inbox you already use, whether that is Gmail, Outlook, Proton Mail, Apple Mail, or Fastmail itself. It stores zero message bodies on disk and adds server-side PGP encryption, 1x1 tracker pixel stripping, link parameter scrubbing, Email X-Ray forensics, and HMAC-signed webhooks.

Feature comparison#

Here is how AliasFleet and Fastmail Masked Email compare across mail routing, privacy controls, custom domains, and pricing.

Scroll table horizontally to compare→
Feature comparison between AliasFleet and Fastmail Masked Email
Capabilities
Feature breakdown
AliasFleet
Fastmail
Core Alias Routing & Capacity
Works with any existing inbox
Use aliases directly inside Gmail, Outlook, Proton Mail, or Apple Mail.
Yes: Any email provider
No: Fastmail mailbox centered
Permanent free plan
Use aliases and personal subdomains without a time-limited trial.
Yes: 10 aliases + 3 subdomains
No: 30-day trial only
Zero-storage in-memory routing
Mail is parsed in memory and forwarded without saving message bodies on disk.
Yes: Zero body storage
No: Stored in hosted mailbox
Alias expiration & self-destruct TTL
Schedule an alias to auto-expire after 1 hour, 1 day, 1 week, or a custom date.
Yes: 1 free / Unlimited (Pro)
No: Manual deletion only
Privacy Controls, Sanitization & Forensics
Server-side tracker pixel stripping
Neutralizes 1x1 tracking pixels at the MTA before mail reaches any client.
Yes: Pro & Business
No: Webmail image proxy only
Link tracker parameter scrubbing
Strips utm_*, fbclid, gclid, and redirect tokens from forwarded links.
Yes: Pro & Business
No: Not supported
Email X-Ray header & hop forensics
Inspect raw MIME headers, relay delays, and SPF/DKIM/DMARC verdicts.
Yes: Pro & Business
No: Raw message view only
PGP encryption & WKD auto-lookup
Encrypts forwarded mail with Inline PGP or PGP/MIME and queries WKD keys.
Yes: Inline, PGP/MIME & WKD (Pro & Business)
No: Not supported
Vendor leak detection & exposure scoring
Flags aliases when unexpected third-party domains send mail to them.
Yes: Pro & Business (1-click fix)
No: Manual folder rules
Custom Domains, Rules & Outbound Quick Send
Custom domain connections & catch-all
Bring your own root domains with automated DNS diagnostics and catch-all.
Yes: 3 (Pro) / 10 (Business)
Yes: Standard & Professional
Multi-destination team routing
Forward a single alias to up to 5 verified recipient mailboxes simultaneously.
Yes: Business (5 inboxes/alias)
Yes: Forwarding rules
Developer API, Webhooks & Observability
Signed HTTP webhooks & Slack/Discord cards
HMAC-SHA256 JSON webhooks, native Slack/Discord cards, and raw MIME (Biz).
Yes: Pro (2) / Business (10)
No: JMAP API only
Scoped Developer REST API
Simple JSON REST API with granular scopes for aliases, rules, and webhooks.
Yes: Business
Yes: JMAP MaskedEmail spec
Try AliasFleet for free
10 aliases and 3 subdomains included.
Fastmail

Why look for a Fastmail alternative#

Keep your existing inbox vs moving to a new mailbox#

Fastmail is designed to replace Gmail, Outlook, or iCloud Mail as your primary email host. While you can set up forwarding rules inside Fastmail, paying for a full cloud mailbox just to forward aliases to another inbox duplicates storage and cost.

AliasFleet is built specifically as an in-memory routing layer in front of the inbox you already use. Your messages are never stored on disk at AliasFleet, and you can route different aliases to up to 5 verified inboxes on Pro or 20 inboxes on Business.

Server-side PGP encryption, tracker stripping, and link scrubbing#

Fastmail proxies remote images inside its own webmail client, but it does not strip tracking pixels or URL tracking parameters from the underlying MIME message if you read mail in Apple Mail, Thunderbird, or another IMAP client. Fastmail also does not encrypt incoming messages with your PGP public key.

AliasFleet Pro and Business remove 1x1 tracking pixels, scrub tracking query parameters (utm_*, fbclid, gclid) from hyperlinks, and encrypt the message body with your PGP key (with WKD auto-lookup) before forwarding it to your inbox.

Security headers injected by AliasFleet Pro
X-AliasFleet-Alias: newsletter.88b@yourdomain.comX-AliasFleet-Sender-Auth: spf=pass; dkim=pass; dmarc=passX-AliasFleet-Trackers-Stripped: 3X-AliasFleet-Links-Scrubbed: 5X-AliasFleet-PGP-Mode: pgp-mimeList-Unsubscribe: <https://app.aliasfleet.com/unsubscribe>

REST API and signed webhooks vs JMAP#

Fastmail exposes Masked Email creation through the JMAP protocol, which is how password managers like 1Password integrate with it. However, integrating JMAP into internal scripts requires JMAP session negotiation and does not provide outbound HTTP webhooks on incoming mail.

AliasFleet provides a standard JSON REST API with scoped Bearer tokens and dispatches HMAC-SHA256 signed webhooks, native Slack/Discord cards, and raw RFC 822 MIME payloads.

Which one fits your setup#

Choose AliasFleet if#

  • You want to keep using Gmail, Outlook, Proton Mail, or Apple Mail rather than migrating to a new mailbox host.
  • You want a free plan with 10 aliases and 3 personal subdomains.
  • You want server-side PGP encryption, WKD key lookup, 1x1 tracker pixel removal, and link parameter scrubbing.
  • You want Email X-Ray header forensics, vendor leak detection, and HMAC-signed webhooks.

Choose Fastmail if#

  • You are looking for a full hosted mailbox, calendar, and contacts suite to replace Gmail or Outlook.
  • You already use Fastmail as your daily mail client and generate aliases through 1Password.

Moving a custom domain from Fastmail#

If you use your own domain on Fastmail, you can move it to AliasFleet without losing mail. Set up the domain and your aliases in AliasFleet before you update the MX record at your DNS registrar.

1

List your active custom domain addresses in Fastmail

Review your Custom Domains and Masked Email settings in Fastmail to export any addresses that use your own domain.

2

Add your domain in AliasFleet

Add your domain in AliasFleet, verify your destination inbox, and recreate your aliases or enable catch-all routing.

3

Publish AliasFleet DKIM and SPF records

Add the af._domainkey CNAME record and update your SPF TXT record to include mail.aliasfleet.com before changing your MX records.

4

Update your MX records

Replace in1-smtp.messagingengine.com and in2-smtp.messagingengine.com with mail.aliasfleet.com (priority 10). Note that shared *.fastmail.com addresses remain tied to Fastmail.

Standard DNS records for a root domain on AliasFleet:

Standard DNS records (Apex domain)
; 1. Inbound Mail Routing (Apex or Subdomain)@               IN  MX     10 mail.aliasfleet.com.; 2. Sender Policy Framework (SPF)@               IN  TXT    "v=spf1 include:mail.aliasfleet.com ~all"; 3. DomainKeys Identified Mail (DKIM CNAME Selector)af._domainkey   IN  CNAME  dkim.aliasfleet.com.; 4. DMARC Policy (Recommended)_dmarc          IN  TXT    "v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@aliasfleet.com"

Frequently Asked Questions

Yes. Many users keep Fastmail as their destination mailbox and use AliasFleet in front of it for tracker pixel stripping, link scrubbing, vendor leak alerts, and webhooks.

Addresses on Fastmail-owned domains stay with Fastmail. However, any aliases on your own custom domain can be moved to AliasFleet by updating your domain MX, SPF, and DKIM records.

No. AliasFleet is a non-storage forwarding service. Messages are processed in memory and delivered to your destination inbox without saving email bodies on disk.

Sources

Competitor prices and features were last checked in October 2026. Prices change; the pages below are the current reference.

Try AliasFleet with your inbox

The free plan includes 10 aliases, 3 personal subdomains, and two-way replies. No credit card required.

AliasFleet

AliasFleet

Editorial Team

Technical benchmarks, protocol comparisons, and email privacy research by the AliasFleet engineering team.

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