Unfragile

The request names Mailchimp, so Mailchimp leads: its platform offers automation of email and SMS campaigns, and its indexed actions include creating custom events for automations and creating and sending campaigns 111. Alternatives that automate email sending or workflows are Mailjet, Resend and Twilio SendGrid, which cover email delivery and automation stats 101719.

1
Mailchimpmailchimp.comverified and signed
Email and SMS marketing platform with AI-powered automation; indexed actions log custom events for automations and create and send campaigns to audiences 111.
Website Docs Pricing Get started
+15 community tools built for it
for agents: create_custom_event · create_campaign · send_campaign
2
Mailjetmailjet.comverified and signed
Marketing and transactional email platform that lets teams automate workflows and send emails through an API 1020.
Website Docs Pricing Get started
for agents: custom_api_call · send_email · email
3
Resendresend.comverified and signed
Developer email API for transactional and marketing emails, with batch sending of up to 100 emails per call 717.
Website Docs Pricing Get started
+12 community tools built for it
for agents: send_batch_emails · custom_api_call · resend
4
Twilio SendGridtwilio.comverified and signed
Email API and marketing campaigns platform that exposes automation statistics through its API 919.
Website Docs Get started
official:API · Email Activity (beta)+11 community tools built for it
for agents: get-automation-stat · getall-automation-stats · get-automations-stats-export

Sources

1Email & SMS Marketing Platform | Mailchimpmailchimp.com · read 2026-10-30
7Resend · Email for developersresend.com · read 2026-10-29
9SendGrid Email API and Email Marketing Campaigns | Twiliotwilio.com · read 2026-10-29
10Mailjet: Best Email Marketing Software & Email API for Teamsmailjet.com · read 2026-10-30
11Mailchimp (Activepieces): declares "create_custom_event" (the record we read and signed)unfragile.ai · read 2026-10-24
17Resend (Activepieces): declares "send_batch_emails" (the record we read and signed)unfragile.ai · read 2026-10-24
19Email Activity (beta): declares "get-automation-stat" (the record we read and signed)unfragile.ai · read 2026-10-24
20Mailjet (Activepieces): declares "custom_api_call" (the record we read and signed)unfragile.ai · read 2026-10-24

For agents: the 10 actions behind this answer

create_custom_event · Mailchimp (Activepieces) verified and signed
Create Custom Event — Log a custom event for an existing subscriber, for use in automations and segmentation
· Insightfulmcp Mailchimp Insightfulpipe website read, tools not yet checked
Unify Facebook Ads, Google Analytics, and growth data inside MCP-enabled AI apps like ChatGPT and Claude. Insightful Pipe gives agencies secure connectors and multi-brand insights in minutes.
custom_api_call · GitHub (Activepieces) verified and signed
Custom API Call — Make a custom API call to a specific endpoint
custom_api_call · Notion (Activepieces) verified and signed
Custom API Call — Make a custom API call to a specific endpoint
add-new-jit-ee-api · add-new-jit-ee-api verified and signed
Add a new API to the JIT-VM (aka JIT-EE) interface in the codebase.
issues.automations.create · Cloudflare API verified and signed
Create an issue automation
send_batch_emails · Resend (Activepieces) verified and signed
Send Batch Emails — Send up to 100 emails in a single API call
· Playwright website read, tools not yet checked
Web automation and testing for apps, scripts, and AI agents
get-automation-stat · Email Activity (beta) verified and signed
Get Automation Stats by ID
custom_api_call · Mailjet (Activepieces) verified and signed
Custom API Call — Make a custom API call to a specific endpoint

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