Fastmail
Fastmail sells paid email, calendar and contacts hosting for individuals, families and businesses.
Subprocessors (36)
Checked Oct 25, 2026 · source disclosure ↗
| vendor | purpose | evidence |
|---|---|---|
| Antispam/antifraud/antiabuse management Subprocessors | “Abusix Antispam/antifraud/antiabuse management” | |
| Anthropic Anthropic PBC | Business operations and support services Subprocessors | “Anthropic PBC Business operations and support services” |
| Business operations Subprocessors | “Avalara AvaTax Business operations” | |
| Domain registration and management Subprocessors | “CentralNic Reseller (RRPproxy) Domain registration and management” | |
| Content distribution, security, abuse prevention and DNS services Subprocessors | “Cloudflare Content distribution, security, abuse prevention and DNS services” | |
| Translation services, primarily for support tickets and non-English spam and phishing content review Subprocessors | “DeepL Translation services, primarily for support tickets and non-English spam and phishing content review” | |
| Antispam/antifraud/antiabuse management Subprocessors | “DNSWL Antispam/antifraud/antiabuse management” | |
| Support services and Business operations Subprocessors | “DropBox Support services and Business operations” | |
| Support services and Business operations Subprocessors | “eFax (j2connect) Support services and Business operations” | |
| Antispam/antifraud/antiabuse management Subprocessors | “eHawk Antispam/antifraud/antiabuse management” | |
| Fastmail US LLC affiliate | Business operations Subprocessors | “Fastmail US LLC Business operations” |
| Hosting of code as an open source tool Subprocessors | “GitHub Hosting of code as an open source tool” | |
| Writing assistance, primarily for support tickets Subprocessors | “Grammarly Writing assistance, primarily for support tickets” | |
| Antispam/antifraud/antiabuse management Subprocessors | “hCaptcha Antispam/antifraud/antiabuse management” | |
| Project management and Business operations Subprocessors | “Linear Project management and Business operations” | |
| Email marketing and automation Subprocessors | “Mailchimp Email marketing and automation” | |
| Cloud-based and on-premises office productivity tools Subprocessors | “Microsoft Cloud-based and on-premises office productivity tools” | |
| Support services and Business operations Subprocessors | “Notion Support services and Business operations” | |
| Payment processing Subprocessors | “Paddle Payment processing” | |
| Support services and Incident management Subprocessors | “PagerDuty Support services and Incident management” | |
| Partner and referral management Subprocessors | “Partnerstack Partner and referral management” | |
| Payment processing Subprocessors | “Paypal Payment processing” | |
| Payment processing Subprocessors | “Pin Payment processing” | |
| Analytics in order to improve user experience. Subprocessors | “Posthog Analytics in order to improve user experience.” | |
| Support services Subprocessors | “Pythia Support services” | |
| Antispam/antifraud/antiabuse management Subprocessors | “Redsift Antispam/antifraud/antiabuse management” | |
| Application logging Subprocessors | “Sentry Application logging” | |
| Support services and Business operations Subprocessors | “Slack Support services and Business operations” | |
| Antispam/antifraud/antiabuse management Subprocessors | “Spamhaus Antispam/antifraud/antiabuse management” | |
| Payment processing Subprocessors | “Stripe Payment processing” | |
| Support services, Customer feedback and Business operations Subprocessors | “SurveyMonkey Support services, Customer feedback and Business operations” | |
| Multi-factor authentication Subprocessors | “Twilio Multi-factor authentication” | |
| Antispam/antifraud/antiabuse management Subprocessors | “Vade (Hornet Security) Antispam/antifraud/antiabuse management” | |
| Antispam/antifraud/antiabuse management Subprocessors | “Validity Antispam/antifraud/antiabuse management” | |
| Support services Subprocessors | “Zendesk Support services” | |
| Video conferencing Subprocessors | “Zoom Video conferencing” |
-
Antispam/antifraud/antiabuse management
“Abusix Antispam/antifraud/antiabuse management”
-
Business operations and support services
“Anthropic PBC Business operations and support services”
-
Business operations
“Avalara AvaTax Business operations”
-
Domain registration and management
“CentralNic Reseller (RRPproxy) Domain registration and management”
-
Content distribution, security, abuse prevention and DNS services
“Cloudflare Content distribution, security, abuse prevention and DNS services”
-
Translation services, primarily for support tickets and non-English spam and phishing content review
“DeepL Translation services, primarily for support tickets and non-English spam and phishing content review”
-
Antispam/antifraud/antiabuse management
“DNSWL Antispam/antifraud/antiabuse management”
-
Support services and Business operations
“DropBox Support services and Business operations”
-
Support services and Business operations
“eFax (j2connect) Support services and Business operations”
-
Antispam/antifraud/antiabuse management
“eHawk Antispam/antifraud/antiabuse management”
- Fastmail US LLC affiliate
Business operations
“Fastmail US LLC Business operations”
-
Hosting of code as an open source tool
“GitHub Hosting of code as an open source tool”
-
Writing assistance, primarily for support tickets
“Grammarly Writing assistance, primarily for support tickets”
-
Antispam/antifraud/antiabuse management
“hCaptcha Antispam/antifraud/antiabuse management”
-
Project management and Business operations
“Linear Project management and Business operations”
-
Email marketing and automation
“Mailchimp Email marketing and automation”
-
Cloud-based and on-premises office productivity tools
“Microsoft Cloud-based and on-premises office productivity tools”
-
Support services and Business operations
“Notion Support services and Business operations”
-
Payment processing
“Paddle Payment processing”
-
Support services and Incident management
“PagerDuty Support services and Incident management”
-
Partner and referral management
“Partnerstack Partner and referral management”
-
Payment processing
“Paypal Payment processing”
-
Payment processing
“Pin Payment processing”
-
Analytics in order to improve user experience.
“Posthog Analytics in order to improve user experience.”
-
Support services
“Pythia Support services”
-
Antispam/antifraud/antiabuse management
“Redsift Antispam/antifraud/antiabuse management”
-
Application logging
“Sentry Application logging”
-
Support services and Business operations
“Slack Support services and Business operations”
-
Antispam/antifraud/antiabuse management
“Spamhaus Antispam/antifraud/antiabuse management”
-
Payment processing
“Stripe Payment processing”
-
Support services, Customer feedback and Business operations
“SurveyMonkey Support services, Customer feedback and Business operations”
-
Multi-factor authentication
“Twilio Multi-factor authentication”
-
Antispam/antifraud/antiabuse management
“Vade (Hornet Security) Antispam/antifraud/antiabuse management”
-
Antispam/antifraud/antiabuse management
“Validity Antispam/antifraud/antiabuse management”
-
Support services
“Zendesk Support services”
-
Video conferencing
“Zoom Video conferencing”