Plain

plain.com

Plain declares 29 subprocessors in its subprocessor list, which we last checked on Nov 11, 2026 (evidence). They include Amazon Web Services, Google Cloud and OpenAI. No published changes since we first read it on Sep 22, 2026. 59 tracked vendors name Plain as a subprocessor, including Twilio, SendGrid and Segment.

Subprocessors CSV · Atom DORA draft CSV what's this? · 

29 third parties.

NamePurposeLocationListed since
Amazon Web Services Cloud provider; Hosting/InfrastructureUK
Anthropic AIAI/LLM ProviderGlobal
Baseten AIEngineering
Cloudflare Cloud monitoring; Hosting/Infrastructrure, Firewall && DDoS protectionDistributed
Customer.io Marketing; Marketing AnalyticsUS & EU
Datadog Cloud monitoring
Google Cloud provider; Hosting / InfrastructureDistributed
HubSpot CRM; MarketingUS
Hyperline Finance and payments
Linear Product and designUS
Liveblocks Real time and collaboration featuresUS
n8n Workflow automationEU
Nango IntegrationsUS
Omni Data analytics; Reporting & AnalyticsUS
OpenAI AIAI; AI/LLM ProviderUS
Polytomic Data storage and processingUS
PostHog Data analyticsUS
Postmark Email Infrastructure; Email processingUS
Render Cloud provider; Infrastructure / HostingEU
salesforce CRM integration; This is an opt-in integration that users can use to push customer data between Plain and their CRM.US
Segment Analytics / Reporting; Data analyticsUS
Slack CollaborationDistributed
Stripe Finance and paymentsUS
Supabase
Use as our GTM data infrastructure. Stores call recording analysis, customer data, and enrichment data to run out GTM intent engine. It receives signals from RB2B, LinkedIn Ads, and Attio to provide a fit and intent score used by Cargo (through Polytomic/Plain).
Cloud provider
Tinybird Analytics / Reporting Infrastructure; Data analyticsEU
Turbopuffer Database & HostingEU
Vercel Hosting; Hosting/InfrastructureDistributed
WorkOS AuthenticationUS
xAI AILLM which reads codebase and helps engineering team to understand existing code and for development.Engineering

Web TechnologiesCSV · Atom

Plain's homepage made 187 requests to 28 domains, 11 services controlled by another company, and 2 domains not identified.

Analytics (5): posthog, Leadfeeder, LinkedIn, Snitcher; usually detected as Analytics: Plausible AnalyticsAdvertising (2): Google Cloud; usually detected as Advertising: MicrosoftMarketing automation (1): HubSpotCookie compliance (1): TermlyOther (2): Customer data platform: Segment; Page builders: Framer

11 third parties by category: Analytics 5Advertising 2Marketing automation 1Cookie compliance 1Other 2

Third parties 11 · 178 requests
Framer Framer Sites 66% of the page's requests 124
Google Cloudsubprocessor DoubleClick Floodlight Google Analytics Google Tag Manager 6% of the page's requests 11
Termly Termly 5% of the page's requests 10
posthogsubprocessor PostHog 4% of the page's requests 7
HubSpotsubprocessor HubSpot 3% of the page's requests 6
Microsoft bing.com, bing.net 3% of the page's requests 6
Leadfeeder Leadfeeder 2% of the page's requests 4
LinkedIn Linkedin Insight Tag 2% of the page's requests 3
Segmentsubprocessor Segment 1.84.3 2% of the page's requests 3
Snitcher Snitcher 2% of the page's requests 3
Plausible Analytics plausible.io <1% of the page's requests 1
Unknown 2 · 2 requests

sequel.iosequelvideo.com

First party 1 · 7 requests
Plain Framer Motion Google Font API HSTS Microsoft Advertising Open Graph Plain Plausible Priority Hints React Vercel 4% of the page's requests 7

7 tracked companies loaded by the homepage are not in Plain's subprocessor list. A website can use a service without it processing customer data.

Subprocessor of (59)CSV · Atom

59 companies
  • Actualyze AI actualyze.ai Customer Support; support and account management Legal Entity: Not Just Tickets Ltd.
  • Alloy alloy.app Customer Support
  • Ashby ashbyhq.com Customer Support
  • Bird bird.com Internal Customer Support Ticketing System
  • Buffer buffer.com
  • Buildkite buildkite.com API-first customer support platform for B2B companies; Customer support infrastructure for handling inquiries and support tickets
  • Buttondown buttondown.com Customer support and help desk software
  • Clerk clerk.com Customer support platform with bidirectional customer and thread data sync
  • Conveo conveo.ai Customer Support; Processing Activity Description Customer Support Services Data Residency / Processing Location EU (London) Headquarters Location Cheshire, UK
  • CookieChimp cookiechimp.com Customer support
  • crewAI crewai.com
  • Daily daily.co Customer support
  • Dailybot dailybot.com Cloud-based customer support services
  • Dash0 dash0.com Customer Support (Issue Tickets)
  • DeepSource deepsource.com Customer support platform
  • Depot depot.dev Customer Support
  • Doozy doozy.live Support ticketing and customer service
  • Dub dub.co Customer support
  • Duffel duffel.com Customer data; Customer support communications
  • ElevenLabs elevenlabs.io Customer support
  • Fly.io fly.io Customer support communication
  • Gladia gladia.io
  • Granola grano.la Operations & Support; Purpose of processing – Customer support platform. Hosting location – United Kingdom Entity address – 3rd Floor 1 Ashley Road Altrincham WA14 2DT United Kingdom Compliance measures – [Plain Trust Center](
  • Inngest inngest.com
  • Journeybee journeybee.io Helpdesk Software
  • Kinde kinde.com
  • Laravel laravel.com Support desk
  • Limio limio.com Customer support; Track and resolve customer's issues
  • Luma AI lumalabs.ai Customer support
  • MacStadium macstadium.com Customer support management system
  • Mergify mergify.io Customer support tickets
  • Metaplane metaplane.dev Customer support
  • Mintlify mintlify.com Help Center
  • Monad monad.com Customer support communications
  • Nango nango.dev Customer support
  • ngrok ngrok.com Customer Support
  • Novu novu.co Support system
  • Pipeline CRM pipelinecrm.com Customer support; Customer support ticketing and in-app support chat
  • Polar polar.sh Customer support service
  • Productlane productlane.com Plain integration: support conversations exchanged when enabled
  • Raycast raycast.com Customer support
  • Refiner refiner.io Customer relationship management and support platform used to manage customer communications and support interactions.
  • Sanity sanity.io Sanity uses Plain.com to provide customer support through its slack and email integration.
  • Segment segment.com Plain Manages multi-channel customer support communication and service ticket resolution for specific Twilio Products and Services
  • SendGrid sendgrid.com Plain Manages multi-channel customer support communication and service ticket resolution for specific Twilio Products and Services
  • Shortcut shortcut.com Customer Support
  • sparkpost sparkpost.com Internal Customer Support Ticketing System
  • Svix svix.com Svix uses Plain for customer support. Plain may have access to customer name, email address, and support communication contents.
  • Tella tella.tv To provide product support services to users.
  • Tigris Data tigrisdata.com Customer support communication
  • Tines tines.com Customer support / ticketing
  • Tinybird tinybird.co customer support-related issue tracking and management SaaS Authorised User identity storage, authentication, and management
  • Trigger.dev trigger.dev Communication and support services (Plain)
  • Twilio twilio.com Plain Manages multi-channel customer support communication and service ticket resolution for specific Twilio Products and Services
  • Type type.com
  • Vercel vercel.com Customer support services
  • Voltage Park voltagepark.com
  • Yapily yapily.com B2B Customer Support Platform,
  • Zero zero.inc Provision of a B2B customer support platform

ComplianceCSV · Atom

Certified
Says it complies with

Certifications as Plain's trust center lists them; reports are usually shared on request (evidence)

Service statusCSV · Atom

Aug 15: no incident reportedAug 16: no incident reportedAug 17: 1 incident (1 minor)Aug 18: 1 incident (1 minor)Aug 19: 2 incidents (1 major, 1 minor)Aug 20: 1 incident (1 no impact stated)Aug 21: 1 incident (1 minor)Aug 22: no incident reportedAug 23: no incident reportedAug 24: 1 incident (1 minor)Aug 25: no incident reportedAug 26: 1 incident (1 minor)Aug 27: 2 incidents (1 major, 1 minor)Aug 28: no incident reportedAug 29: no incident reportedAug 30: no incident reportedAug 31: 1 incident (1 minor)Sep 1: no incident reportedSep 2: no incident reportedSep 3: no incident reportedSep 4: no incident reportedSep 5: no incident reportedSep 6: no incident reportedSep 7: 1 incident (1 critical)Sep 8: no incident reportedSep 9: 1 incident (1 no impact stated)Sep 10: 1 incident (1 minor)Sep 11: 1 incident (1 minor)Sep 12: no incident reportedSep 13: no incident reportedSep 14: no incident reportedSep 15: no incident reportedSep 16: 1 incident (1 minor)Sep 17: 1 incident (1 major)Sep 18: 2 incidents (1 critical, 1 minor)Sep 19: no incident reportedSep 20: no incident reportedSep 21: no incident reportedSep 22: 1 incident (1 minor)Sep 23: no incident reportedSep 24: no incident reportedSep 25: no incident reportedSep 26: no incident reportedSep 27: no incident reportedSep 28: no incident reportedSep 29: 1 incident (1 major)Sep 30: 2 incidents (2 minor)Oct 1: no incident reportedOct 2: no incident reportedOct 3: no incident reportedOct 4: no incident reportedOct 5: no incident reportedOct 6: no incident reportedOct 7: 2 incidents (1 critical, 1 major)Oct 8: 1 incident (1 minor)Oct 9: no incident reportedOct 10: no incident reportedOct 11: no incident reportedOct 12: no incident reportedOct 13: no incident reportedOct 14: 1 incident (1 minor)Oct 15: no incident reportedOct 16: no incident reportedOct 17: no incident reportedOct 18: no incident reportedOct 19: no incident reportedOct 20: no incident reportedOct 21: no incident reportedOct 22: 1 incident (1 minor)Oct 23: no incident reportedOct 24: no incident reportedOct 25: no incident reportedOct 26: no incident reportedOct 27: no incident reportedOct 28: 1 incident (1 minor)Oct 29: 1 incident (1 major)Oct 30: 1 incident (1 minor)Oct 31: no incident reportedNov 1: no incident reportedNov 2: 1 incident (1 minor)Nov 3: 1 incident (1 minor)Nov 4: 1 incident (1 minor)Nov 5: no incident reportedNov 6: no incident reportedNov 7: no incident reportedNov 8: no incident reportedNov 9: 2 incidents (1 minor, 1 no impact stated)Nov 10: no incident reportedNov 11: no incident reportedNov 12: no incident reported

90 days agotoday

  • 36 incidents in 90 days
  • 9 major or critical
  • 44 min typical time to resolve
  • 3 h 46 min longest major
BeganIncidentImpactLasted
Help Center errorsno impact stated—
Intermittent API errors on write actionsminor2 h 54 min
Delays in incoming emailsminor1 h 55 min
Some Sidekick requests failingminor10 min
Delays receiving Slack messages in Plainminor11 min
Reporting data delayedminor47 min
Elevated errors across the Plain app, API and help centersmajor19 min
Degraded AI featuresminor1 h 33 min

Incidents per month

0 6 12 Jul 2026: 4 incidents (1 critical, 1 major, 2 minor) · partial: our history begins Jul 24 · typical time to resolve 33 min Aug 2026: 12 incidents (2 major, 9 minor, 1 no impact stated) · typical time to resolve 1 h 21 min Sep 2026: 12 incidents (2 critical, 2 major, 7 minor, 1 no impact stated) · typical time to resolve 30 min Oct 2026: 8 incidents (1 critical, 2 major, 5 minor) · typical time to resolve 46 min Nov 2026: 5 incidents (4 minor, 1 no impact stated) · typical time to resolve 1 h 55 min Jul 2026Aug Sep Oct Nov

critical major minor no impact stated before or partly before our history

As Plain's status page reports its own incidents (scheduled maintenance left out), read every few hours since (evidence)

Incidents reported by Plain's subprocessorsCSV · Atom

312 reported incidents in the last 30 days, by 18 of the vendors Plain lists as subprocessors.

A subprocessor list names a company, not the service an incident touched. This does not show that Plain was involved.

DateCompanyIncidentImpactLasted
SegmentSMS Delivery Delays from a Subset of Twilio Long Codes to Multiple Networks in France minorongoing
SegmentSMS Delivery Delays from Twilio to Virgin Mobile Colombia minorongoing
SegmentSMS Delivery Delays from Twilio to Telenor Pakistan minorongoing
OpenAIGPT-image-2.5 and 2.6 Sunburst & Flare High error rate minor32 min
SegmentMMS Delivery Failures from Twilio to GCI United States minor3 min
SegmentSMS Delivery Failures from Twilio 10DLC to AT&T United States minor4 h 3 min
SegmentSMS Delivery Failures from Twilio to Orange Sierra Leone minorongoing
SegmentSMS Delivery Failures From Long Code Numbers to AT&T in the US minor1 h 19 min
SegmentSMS Delivery Delays from Twilio to MTS Kazakhstan minor14 h 6 min
SegmentSMS Delivery Failures from a Subset of Twilio Phone Numbers to Tcell Tajikistan minor11 h 19 min
OpenAIUnable to start new Workspace Agent runs critical9 h 42 min
SegmentMMS Delivery Delays from a Subset of Twilio Long Codes to Multiple Networks in United States minor16 h 29 min
SegmentSMS Delivery Failures from a Subset of Twilio Phone Numbers to K-Cell Kazakhstan minor7 h 23 min
OpenAIElevated errors affecting logins, sign-ups, and ChatGPT features minor8 min
turbopufferDashboard Outage critical—
BasetenModel APIs are down for all models critical21 min
SegmentVoice Call Failures in JP1 minor3 h 51 min
SegmentOn Call Engineers are Investigating no impact statedongoing
SupabaseProject Lifecycle Issues in ap-northeast-1 minor4 h 48 min
LinearSlack integration degraded due to Slack outage minor3 h 9 min
RenderAPI Performance Issues minor18 min
SegmentSMS Delivery Failures from Twilio to Turkcell Turkey minor3 h 54 min
SegmentRetroactive Incident Impacting Twilio Usage APIs no impact stated1 min
AnthropicElevated errors on Fable 52 and Mythos 52 no impact stated1 min
SegmentIssue resolved minor1 h 43 min

And 287 more. All of them: CSV · Who is around them.

ChangesCSV · Atom

See the list as we read it on any date: Time machine

None since tracking began.

Rating badge for Plain's site

Plain transparency rating

It updates with the rating.

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