Applications › Email Marketing & Newsletters

Email Marketing & Newsletters

What 8 leading Email Marketing & Newsletters apps are built on: the providers each one ships in its code or lists as an integration, grouped by layer and capability, and joined to the catalog.

8 reference apps 84 providers 37 observed in code 47 declared only 98.8% in the catalog 54.7 mean Kin Score 39 with a verified MCP server

How to read this. observed the integration ships in the app (SDK in a dependency file, source code, or an Android build analysis). declared the app names the integration itself (README, integrations page, store listing). Every row links the source it was read from. Providers not yet in the catalog are marked queued for profiling. Blueprint by API Evangelist, CC BY-NC-SA 4.0. Capabilities marked Turbo EA come from Turbo EA Capabilities by Vincent Verdet, CC BY 4.0 (notice); those marked API Evangelist extension are CC BY-NC-SA 4.0. Android build analyses: Exodus Privacy (reports.exodus-privacy.eu.org).

domain layer 16 capabilities

Email Marketing Sends 12 providers · AE-150.10.20 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
SendGrid	observed [1] [2] [3]	Keila, Mautic, listmonk	87.5 exemplar	40.1 agent-ready	none found
Amazon SES	observed [1] [2] [3]	Keila, Mautic, listmonk	80.6 exemplar	39.4 agent-ready	none found
Postmark	observed [1] [2]	Keila, listmonk	70.3 exemplar	41.7 agent-ready	verified
Mailgun	observed [1] [2]	Ghost, Keila	30.9 thin	19.0 agent-aware	verified
Forward Email (forwardemail.net)	observed [1]	listmonk	61.1 strong	33.2 agent-ready	—
Lettermint	observed [1]	listmonk	53.6 developing	42.1 agent-ready	—
Azure Communication Services	observed [1]	listmonk	33.3 thin	19.6 agent-aware	none found
Resend	declared [1]	listmonk	58.9 strong	49.4 agent-ready	verified
MailerSend	declared [1]	listmonk	57.9 strong	56.3 agent-ready	verified
Elastic Email	declared [1]	Mautic	51.7 developing	41.1 agent-ready	verified
Mailjet	declared [1]	Mautic	46.5 developing	23.4 agent-aware	verified
SparkPost	declared [1]	Mautic	37.9 thin	26.1 agent-aware	none found

Digital Marketing Management 11 providers · BC-400.60 · Turbo EA

Digital Marketing Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Facebook	observed [1] [2] [3]	Klaviyo, Mailchimp, Mautic, Substack, beehiiv	42.7 developing	28.2 agent-aware	none found
X (Twitter)	observed [1]	Mautic	73.0 exemplar	61.2 agent-native	verified
AppsFlyer	observed [1]	Substack	69.8 exemplar	46.4 agent-ready	verified
Constant Contact	observed [1]	Mautic	69.6 exemplar	32.1 agent-ready	none found
Instagram	observed [1]	Mautic	67.4 exemplar	38.9 agent-ready	none found
iContact	observed [1]	Mautic	55.7 strong	26.1 agent-aware	none found
Foursquare	observed [1]	Mautic	46.8 developing	23.3 agent-aware	verified
Branch (branch.io)	observed [1]	Mailchimp	32.0 thin	24.7 agent-aware	none found
LinkedIn Lead Gen Forms	declared [1]	Mailchimp	74.8 exemplar	44.4 agent-ready	none found
Google Ads	declared [1]	Klaviyo	71.9 exemplar	47.7 agent-ready	verified
ManyChat	declared [1]	beehiiv	54.9 strong	33.8 agent-ready	none found

Customer Relationship Management 7 providers · BC-420 · Turbo EA

Customer Relationship Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Salesforce	observed [1] [2] [3]	Mailchimp, Mautic, beehiiv	90.4 exemplar	54.7 agent-ready	verified
HubSpot	observed [1] [2]	Ghost, Mautic	94.8 exemplar	52.7 agent-ready	verified
SugarCRM	observed [1]	Mautic	66.6 exemplar	25.2 agent-aware	none found
Zoho CRM	observed [1]	Mautic	63.5 strong	33.0 agent-ready	verified
Microsoft Dynamics 365	observed [1]	Mautic	49.4 developing	28.1 agent-aware	verified
Vtiger	observed [1]	Mautic	35.9 thin	14.4 agent-aware	none found
ConnectWise	observed [1]	Mautic	30.1 thin	20.8 agent-aware	documented

Subscription Billing & Revenue Management 7 providers · BC-4250 · Turbo EA

Subscription Billing & Revenue Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Stripe	observed [1] [2]	Ghost, beehiiv	82.7 exemplar	58.5 agent-native	verified
Patreon	declared [1] [2]	Ghost, beehiiv	32.6 thin	25.9 agent-aware	none found
Paddle	observed [1]	Keila	27.1 thin	47.5 agent-ready	verified
MemberPress	declared [1]	beehiiv	48.0 developing	37.7 agent-ready	none found
Recurly	declared [1]	beehiiv	35.7 thin	31.6 agent-ready	none found
Gumroad	declared [1]	beehiiv	23.6 emerging	16.8 agent-aware	none found
Memberful	declared [1]	beehiiv	12.9 emerging	0.6 human-only	none found

Content Management 4 providers · AE-170.70 · API Evangelist extension

Content Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Squarespace	declared [1] [2]	Klaviyo, Mailchimp	69.9 exemplar	49.5 agent-native	none found
WordPress	declared [1] [2]	Mailchimp, beehiiv	46.0 developing	31.4 agent-ready	verified
Wix	declared [1] [2]	Klaviyo, Mailchimp	35.6 thin	48.2 agent-ready	verified
Webflow	declared [1]	beehiiv	60.7 strong	62.5 agent-ready	verified

Sales Transaction Management 4 providers · BC-2320.10 · Turbo EA

Sales Transaction Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
WooCommerce	declared [1] [2] [3]	Klaviyo, Mailchimp, beehiiv	53.4 developing	35.4 agent-ready	verified
Shopify	declared [1] [2]	Klaviyo, Mailchimp	84.6 exemplar	52.5 agent-ready	verified
BigCommerce	declared [1]	Klaviyo	84.1 exemplar	60.5 agent-ready	verified
Square	declared [1]	Mailchimp	79.7 exemplar	62.8 agent-native	verified

Customer Data Management 3 providers · BC-420.10 · Turbo EA

Customer Data Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Twilio Segment	observed [1] [2]	Ghost, Mailchimp	43.8 developing	26.8 agent-aware	none found
Clearbit	observed [1]	Mautic	57.9 strong	25.2 agent-aware	none found
FullContact	observed [1]	Mautic	55.0 strong	39.4 agent-ready	none found

Online Forms & Survey Collection 2 providers · AE-921 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Typeform	declared [1] [2]	Ghost, beehiiv	37.6 thin	43.5 agent-ready	verified
Formstack	declared [1]	beehiiv	22.7 emerging	33.9 agent-ready	none found

Customer Feedback Management 2 providers · BC-430.50 · Turbo EA

Customer Feedback Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
OptinMonster	declared [1]	beehiiv	53.8 developing	25.2 agent-aware	none found
Judge.me	declared [1]	Klaviyo	25.5 emerging	19.6 agent-aware	none found

Content Marketing Management 1 providers · BC-400.70 · Turbo EA

Content Marketing Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
ClickFunnels	declared [1]	beehiiv	66.6 exemplar	47.6 agent-ready	none found

Customer Survey Management 1 providers · BC-430.50.20 · Turbo EA

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Qualtrics	observed [1]	Mailchimp	47.3 developing	20.0 agent-aware	none found

Email Deliverability & Verification 1 providers · AE-150.10.30 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
GlockApps queued for profiling	declared [1]	Klaviyo	—	—	none found

Link Shortening & Link-in-Bio 1 providers · AE-913 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Linktree	declared [1]	beehiiv	54.4 strong	43.7 agent-ready	none found

Multi-Carrier Shipping Platforms 1 providers · AE-929 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
ShipStation	declared [1]	Klaviyo	57.7 strong	46.9 agent-ready	none found

Online Courses 1 providers · AE-220.10 · API Evangelist extension

Online Courses capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Thinkific	declared [1]	beehiiv	49.5 developing	53.2 agent-ready	none found

Promotion & Discount Management 1 providers · BC-4030.50 · Turbo EA

Promotion & Discount Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Talon.One	declared [1]	Klaviyo	73.9 exemplar	49.8 agent-native	verified

common layer 13 capabilities

Workflow Automation & iPaaS 2 providers · AE-910 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Zapier	observed [1] [2] [3]	Ghost, Klaviyo, Mailchimp, Mautic, beehiiv	73.7 exemplar	66.2 agent-ready	verified
Make	declared [1]	beehiiv	41.4 developing	43.9 agent-ready	verified

Media Asset Management 4 providers · BC-3710 · Turbo EA

Media Asset Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Amazon S3	observed [1] [2]	Ghost, Mautic	70.8 exemplar	23.3 agent-aware	verified
GIPHY	declared [1]	Ghost	55.6 strong	21.9 agent-aware	none found
Cloudinary	declared [1]	Ghost	51.8 developing	45.0 agent-ready	verified
Unsplash	declared [1]	Ghost	40.2 developing	44.1 agent-ready	none found

Analytics & BI Management 4 providers · BC-610.50 · Turbo EA

Analytics & BI Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Firebase Analytics	observed [1]	Substack	50.3 developing	14.2 agent-aware	verified
Tinybird	observed [1]	Ghost	47.8 developing	30.2 agent-ready	verified
Triple Whale	declared [1]	Klaviyo	66.7 exemplar	60.0 agent-native	none found
Plausible Analytics	declared [1]	Ghost	61.7 strong	23.1 agent-aware	none found

Internal Communications Management 2 providers · BC-850.10 · Turbo EA

Internal Communications Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Slack	declared [1] [2]	Ghost, beehiiv	73.2 exemplar	38.7 agent-ready	verified
Discord	declared [1] [2]	Ghost, beehiiv	46.4 developing	30.6 agent-ready	none found

Bot Protection & CAPTCHA 2 providers · AE-160.70 · API Evangelist extension

Bot Protection & CAPTCHA capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
hCaptcha	observed [1] [2]	Keila, listmonk	30.6 thin	17.9 agent-aware	none found
Friendly Captcha	observed [1]	Keila	26.7 thin	17.9 agent-aware	none found

Observability Management 2 providers · BC-4220.20 · Turbo EA

Observability Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Sentry	observed [1] [2]	Ghost, Substack	80.6 exemplar	50.2 agent-ready	verified
Firebase (Crashlytics + Analytics)	observed [1]	Mailchimp	50.3 developing	14.2 agent-aware	verified

Push Notifications 3 providers · AE-150.30 · API Evangelist extension

Push Notifications capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Amazon Pinpoint (SMS)	declared [1]	listmonk	82.2 exemplar	34.7 agent-ready	none found
Novu	declared [1]	listmonk	69.7 exemplar	61.2 agent-ready	verified
Firebase Cloud Messaging	declared [1]	listmonk	50.3 developing	14.2 agent-aware	verified

Design & Creative Editing 1 providers · AE-170.80 · API Evangelist extension

Design & Creative Editing capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Canva	declared [1] [2]	Klaviyo, Mailchimp	79.8 exemplar	65.3 agent-ready	verified

IP Geolocation 2 providers · AE-120.50.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
MaxMind	observed [1]	Mautic	31.7 thin	17.9 agent-aware	none found
IP2Location	observed [1]	Mautic	5.2 minimal	0.0 human-only	verified

Payment Processing Management 2 providers · BC-1340.20 · Turbo EA

Payment Processing Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Stripe	declared [1]	Mailchimp	82.7 exemplar	58.5 agent-native	verified
PayPal	declared [1]	Ghost	52.9 developing	37.1 agent-ready	verified

SMS 2 providers · AE-150.20.10 · API Evangelist extension

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Twilio	observed [1]	Mautic	93.2 exemplar	56.4 agent-native	verified
Verimor (SMS, Turkey)	declared [1]	listmonk	8.6 minimal	20.4 agent-aware	—

Customer Service Management 1 providers · BC-430 · Turbo EA

Customer Service Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Gorgias	declared [1]	Klaviyo	40.2 developing	25.9 agent-aware	verified

Product Telemetry & Experimentation Management 1 providers · BC-4280 · Turbo EA

Product Telemetry & Experimentation Management capability

Provider	Evidence	Apps	Kin Score	Agent readiness	MCP
Optimizely	observed [1]	Mailchimp	79.6 exemplar	62.9 agent-ready	documented

Reference apps

listmonk self-hosted

https://github.com/knadh/listmonk

7 observed · 6 declared

observed ships the Amazon SES SDK or integration code source
observed ships the Azure Communication Services SDK or integration code source
observed ships the Forward Email (forwardemail.net) SDK or integration code source
observed ships the hCaptcha SDK or integration code source
observed ships the Lettermint SDK or integration code source
observed ships the Postmark SDK or integration code source
observed ships the SendGrid SDK or integration code source
declared lists Amazon Pinpoint (SMS) as an integration source
declared lists Firebase Cloud Messaging as an integration source
declared lists MailerSend as an integration source
declared lists Novu as an integration source
declared lists Resend as an integration source
declared lists Verimor (SMS, Turkey) as an integration source

Read from: dependency manifest, documentation, source code, source code, source code

Keila open-source-saas

https://github.com/pentacent/keila

7 observed · 0 declared

observed ships the Amazon SES SDK or integration code source
observed ships the Friendly Captcha SDK or integration code source
observed ships the hCaptcha SDK or integration code source
observed ships the Mailgun SDK or integration code source
observed ships the Paddle SDK or integration code source
observed ships the Postmark SDK or integration code source
observed ships the SendGrid SDK or integration code source

Read from: dependency manifest, source code, source code, source code

Ghost open-source-saas

https://github.com/TryGhost/Ghost

5 observed · 12 declared

observed ships the Amazon S3 SDK or integration code source
observed ships the Mailgun SDK or integration code source
observed ships the Sentry SDK or integration code source
observed ships the Stripe SDK or integration code source
observed ships the Tinybird SDK or integration code source
declared lists Cloudinary as an integration source
declared lists Discord as an integration source
declared lists GIPHY as an integration source
declared lists HubSpot as an integration source
declared lists Patreon as an integration source
declared lists PayPal as an integration source
declared lists Plausible Analytics as an integration source
declared lists Slack as an integration source
declared lists Twilio Segment as an integration source
declared lists Typeform as an integration source
declared lists Unsplash as an integration source
declared lists Zapier as an integration source

Read from: dependency manifest, integrations page, source code

Mautic self-hosted

https://github.com/mautic/mautic

20 observed · 5 declared

observed ships the Amazon S3 SDK or integration code source
observed ships the Clearbit SDK or integration code source
observed ships the ConnectWise SDK or integration code source
observed ships the Constant Contact SDK or integration code source
observed ships the Facebook SDK or integration code source
observed ships the Foursquare SDK or integration code source
observed ships the FullContact SDK or integration code source
observed ships the HubSpot SDK or integration code source
observed ships the iContact SDK or integration code source
observed ships the Instagram SDK or integration code source
observed ships the IP2Location SDK or integration code source
observed ships the MaxMind SDK or integration code source
observed ships the Microsoft Dynamics 365 SDK or integration code source
observed ships the Salesforce SDK or integration code source
observed ships the SugarCRM SDK or integration code source
observed ships the Twilio SDK or integration code source
observed ships the Vtiger SDK or integration code source
observed ships the X (Twitter) SDK or integration code source
observed ships the Zapier SDK or integration code source
observed ships the Zoho CRM SDK or integration code source
declared lists Amazon SES as an integration source
declared lists Elastic Email as an integration source
declared lists Mailjet as an integration source
declared lists SendGrid as an integration source
declared lists SparkPost as an integration source

Read from: dependency manifest, dependency manifest, documentation, source code

Mailchimp commercial

https://mailchimp.com/

5 observed · 12 declared

observed ships the Branch (branch.io) SDK or integration code source
observed ships the Firebase (Crashlytics + Analytics) SDK or integration code source
observed ships the Optimizely SDK or integration code source
observed ships the Qualtrics SDK or integration code source
observed ships the Twilio Segment SDK or integration code source
declared lists Canva as an integration source
declared lists Facebook as an integration source
declared lists LinkedIn Lead Gen Forms as an integration source
declared lists Salesforce as an integration source
declared lists Shopify as an integration source
declared lists Square as an integration source
declared lists Squarespace as an integration source
declared lists Stripe as an integration source
declared lists Wix as an integration source
declared lists WooCommerce as an integration source
declared lists WordPress as an integration source
declared lists Zapier as an integration source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org), integrations page

Klaviyo commercial

https://www.klaviyo.com/

0 observed · 15 declared

declared lists BigCommerce as an integration source
declared lists Canva as an integration source
declared lists GlockApps as an integration source
declared lists Google Ads as an integration source
declared lists Gorgias as an integration source
declared lists Judge.me as an integration source
declared lists Meta Ads as an integration source
declared lists ShipStation as an integration source
declared lists Shopify as an integration source
declared lists Squarespace as an integration source
declared lists Talon.One as an integration source
declared lists Triple Whale as an integration source
declared lists Wix as an integration source
declared lists WooCommerce as an integration source
declared lists Zapier as an integration source

Read from: integrations page

Substack commercial

https://substack.com/

4 observed · 0 declared

observed ships the AppsFlyer SDK or integration code source
observed ships the Facebook (Analytics, Login, Share) SDK or integration code source
observed ships the Firebase Analytics SDK or integration code source
observed ships the Sentry SDK or integration code source

Read from: Android build analysis (Exodus Privacy, reports.exodus-privacy.eu.org)

beehiiv commercial

https://www.beehiiv.com/

0 observed · 22 declared

declared lists ClickFunnels as an integration source
declared lists Discord as an integration source
declared lists Facebook Lead Ads as an integration source
declared lists Formstack as an integration source
declared lists Gumroad as an integration source
declared lists Linktree as an integration source
declared lists Make as an integration source
declared lists ManyChat as an integration source
declared lists Memberful as an integration source
declared lists MemberPress as an integration source
declared lists OptinMonster as an integration source
declared lists Patreon as an integration source
declared lists Recurly as an integration source
declared lists Salesforce as an integration source
declared lists Slack as an integration source
declared lists Stripe as an integration source
declared lists Thinkific as an integration source
declared lists Typeform as an integration source
declared lists Webflow as an integration source
declared lists WooCommerce as an integration source
declared lists WordPress as an integration source
declared lists Zapier as an integration source

Read from: integrations page

What these apps expose to agents

Klaviyo: Klaviyo lists its own "Klaviyo MCP Server" in its app marketplace declared source
Ghost: ghost/package.json depends on @x402/core, @x402/evm, @x402/hono -- HTTP 402 agent-payment protocol (protocol libs, not a vendor) observed source

Where these apps are listed

google-play: Business
apple-app-store: Business
awesome-selfhosted: Communication - Email - Mailing Lists and Newsletters
zapier: Email Newsletters