# All Products

Showing 1–11 of 11 products. Page 1 of 1.
Sort: score.

Filter options: [Capability](#capability) · [Job to be done](#job-to-be-done) · [AI-native tier](#ai-native-tier) · [Billing model](#billing-model) · [Integrations](#integrations) · [Task completion](#filter-by-documented-task-completion).

The AI-native score listed for each product rates how ready it is for agents to use, from 0 to 100. A high score is not a substitute for your own security or vendor-risk review. See [how scoring works](/methodology/).
Each row also lists Free plan. Yes means the product has an active offer with a free pricing option, alongside any paid plans. Unknown means no free offer is recorded, which is not a confirmed no — filter with `free_plan=true` and add `expand=offers` to read the terms, quotas, and eligibility.

**Applied filters:**
- job_to_be_done_slug=send-transactional-email

[Clear filters](/products.md)


- [Resend](/organizations/resend/products/resend/) by [Resend](/organizations/resend/) — Developer-first email API for sending transactional and marketing email, with SDKs and a REST API.
  - Selected job: Send transactional email (`send-transactional-email`): ✓ Finishes end to end. Scope: An authorized application sends transactional email through the Resend API after a human creates the account, verifies a sending domain and creates an API key. Completion ends at sending the email; inbox delivery is outside scope. Route: API.
  - Categories: [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: 68/100 (Tier B)
  - Free plan: Unknown

- [Postmark](/organizations/postmark/products/postmark/) by [Postmark](/organizations/postmark/) — Transactional email API and SMTP service focused on deliverability, with server-side templates, event webhooks, official SDKs, and an official MCP server.
  - Selected job: Send transactional email (`send-transactional-email`): ✓ Finishes end to end. Scope: An authorized application or agent sends its principal's transactional email through Postmark POST /email after account, server-token and confirmed-sender setup. The API returns a MessageID and submission result; a configured delivery webhook reports acceptance by the receiving mail server. Route: API. Conditions: Requires a Postmark server token and a registered, confirmed sender signature; use a live approved sending account rather than the test token for real delivery. The caller provides the recipient and message and must have authority to send them. A successful API response records submission; delivery events describe the receiving mail server accepting the message, and do not guarantee inbox placement or reading. Setup human requirement remains unknown.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: 60/100 (Tier B)
  - Free plan: Unknown

- [Mailgun](/organizations/mailgun/products/mailgun/) by [Mailgun](/organizations/mailgun/) — Developer-focused transactional and bulk email API with deliverability tooling, official SDKs, and an official MCP server.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: 47/100 (Tier C)
  - Free plan: Unknown

- [Loops](/organizations/loops/products/loops/) by [Loops](/organizations/loops/) — Hosted email platform for software companies that sends marketing, product, and transactional email, with workflows triggered by events and a transactional email API.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Email API / Transactional Email](/categories/email-api-transactional-email/), [Marketing Email](/categories/marketing-email/)
  - AI-native score: 46/100 (Tier C)
  - Free plan: Unknown

- [Mailjet](/organizations/mailjet/products/mailjet/) by [Mailjet](/organizations/mailjet/) — Transactional and marketing email platform with templates, event webhooks, official SDKs, and an official open-source MCP server.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/), [Marketing Email](/categories/marketing-email/)
  - AI-native score: 44/100 (Tier C)
  - Free plan: Unknown

- [Mailtrap](/organizations/mailtrap/products/mailtrap/) by [Mailtrap](/organizations/mailtrap/) — Email delivery platform combining a sending API with an email sandbox/testing inbox, offering templates, webhooks, official SDKs, and an official MCP server.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: Unrated (38/100 researched)
  - Free plan: Unknown

- [Amazon SES](/organizations/amazon-ses/products/amazon-ses/) by [Amazon Web Services](/organizations/amazon-ses/) — Amazon Simple Email Service (SES): a cloud-based bulk and transactional email-sending service with usage-based pricing.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: Unrated (38/100 researched)
  - Free plan: Unknown

- [SparkPost (Bird Email)](/organizations/sparkpost/products/sparkpost/) by [Bird](/organizations/sparkpost/) — High-volume transactional and deliverability email platform with templates and event webhooks.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: Unrated (19/100 researched)
  - Free plan: Unknown

- [Mandrill (Mailchimp Transactional Email)](/organizations/mailchimp-transactional/products/mailchimp-transactional/) by [Mailchimp](/organizations/mailchimp-transactional/) — Transactional email add-on to Mailchimp, with templates, event webhooks, message status APIs, and an official Python SDK.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: Unrated (12/100 researched)
  - Free plan: Unknown

- [Scaleway Transactional Email (TEM)](/organizations/scaleway/products/scaleway-tem/) by [Scaleway](/organizations/scaleway/) — Transactional email (REST API and SMTP relay) within the Scaleway European cloud, with delivery status and guided SPF/DKIM/DMARC setup.
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: Unrated (8/100 researched)
  - Free plan: Unknown

- [Unisender Go](/organizations/unisender-go/products/unisender-go/) by [Unisender](/organizations/unisender-go/) — Transactional and bulk email API (Web API and SMTP).
  - Selected job: Send transactional email (`send-transactional-email`): Not yet assessed for this job.
  - Categories: [Developer Tools](/categories/developer-tools/), [Email API / Transactional Email](/categories/email-api-transactional-email/)
  - AI-native score: Unrated (4/100 researched)
  - Free plan: Unknown


## Filter reference

Parameters apply to this page and the JSON product API. Repeat a multi-value parameter to match any selected value. Different filters must all match. Filter links preserve other active parameters and reset pagination.

### Capability

`capability_slug` accepts capability slugs from the [capability catalog (JSON)](/api/v1/catalog/capabilities/). This catalog lists what products can do.

### Job to be done

`job_to_be_done_slug` accepts job slugs from the [job catalog (JSON)](/api/v1/catalog/jobs-to-be-done/), including jobs without completion assessments. Free-text search uses `search`, for example [search for web search](?job_to_be_done_slug=send-transactional-email&search=web+search).

### AI-native tier

`tier` accepts [S](?job_to_be_done_slug=send-transactional-email&tier=S), [A](?job_to_be_done_slug=send-transactional-email&tier=A), [B](?job_to_be_done_slug=send-transactional-email&tier=B), [C](?job_to_be_done_slug=send-transactional-email&tier=C), [D](?job_to_be_done_slug=send-transactional-email&tier=D), or [Unrated](?job_to_be_done_slug=send-transactional-email&tier=Unrated). A tier rates general agent readiness. Check the selected job's assessment for task completion.

### Billing model

`billing_model` accepts slugs from the [billing model catalog (JSON)](/api/v1/catalog/billing-models/). It filters by charging structure. Offer terms determine the cost of a workload.

Related plan filters: [Free plan](?job_to_be_done_slug=send-transactional-email&free_plan=true) (`free_plan=true`) and [Pay-as-you-go](?job_to_be_done_slug=send-transactional-email&pay_go=true) (`pay_go=true`).

### Integrations

Boolean filters accept `true` or `false`: `has_mcp`, `has_a2a`, `has_cli`, `has_api_spec`, and `has_sdk`. For example, [products with an API specification and SDK](?job_to_be_done_slug=send-transactional-email&has_api_spec=true&has_sdk=true).

## Filter by documented task completion

These filters narrow results by whether an agent can finish the job, its route, delegation support, and required human steps. All completion facets match one assessed job and route. Use `job_to_be_done_slug` to choose a job. The list below contains only jobs with documented assessments.

- Completion support (`completion_support`): [Documented complete](?job_to_be_done_slug=send-transactional-email&completion_support=documented_complete) (`documented_complete`), [Documented partial](?job_to_be_done_slug=send-transactional-email&completion_support=documented_partial) (`documented_partial`)

- Completion route (`route_kind`): [API](?job_to_be_done_slug=send-transactional-email&route_kind=api) (`api`), [MCP server](?job_to_be_done_slug=send-transactional-email&route_kind=mcp) (`mcp`), [A2A server](?job_to_be_done_slug=send-transactional-email&route_kind=a2a) (`a2a`), [Command-line interface](?job_to_be_done_slug=send-transactional-email&route_kind=cli) (`cli`), [SDK / developer kit](?job_to_be_done_slug=send-transactional-email&route_kind=sdk) (`sdk`), [WebMCP](?job_to_be_done_slug=send-transactional-email&route_kind=webmcp) (`webmcp`), [Agent skill](?job_to_be_done_slug=send-transactional-email&route_kind=agent_skill) (`agent_skill`), [Native connector](?job_to_be_done_slug=send-transactional-email&route_kind=native_connector) (`native_connector`), [Web UI (browser/computer use)](?job_to_be_done_slug=send-transactional-email&route_kind=web) (`web`), [Documented route without a published spec](?job_to_be_done_slug=send-transactional-email&route_kind=prose) (`prose`)

- Acting on behalf of a user (`on_behalf_of`): [Supported](?job_to_be_done_slug=send-transactional-email&on_behalf_of=supported) (`supported`), [Conditional](?job_to_be_done_slug=send-transactional-email&on_behalf_of=conditional) (`conditional`), [Prohibited](?job_to_be_done_slug=send-transactional-email&on_behalf_of=prohibited) (`prohibited`)

- Per-task human step (`execution_human_requirement`): [None](?job_to_be_done_slug=send-transactional-email&execution_human_requirement=none) (`none`), [Required](?job_to_be_done_slug=send-transactional-email&execution_human_requirement=required) (`required`), [Conditional](?job_to_be_done_slug=send-transactional-email&execution_human_requirement=conditional) (`conditional`)

Jobs with documented assessments:
- [Accept online payments](?job_to_be_done_slug=accept-online-payments) (`accept-online-payments`)
- [Add authentication to an app](?job_to_be_done_slug=add-authentication-to-app) (`add-authentication-to-app`)
- [Automate a browser workflow](?job_to_be_done_slug=automate-browser-workflow) (`automate-browser-workflow`)
- [Automate household devices](?job_to_be_done_slug=automate-household-devices) (`automate-household-devices`)
- [Build AI agents](?job_to_be_done_slug=build-ai-agents) (`build-ai-agents`)
- [Capture and complete personal tasks](?job_to_be_done_slug=capture-and-complete-personal-tasks) (`capture-and-complete-personal-tasks`)
- [Check weather for an outing or trip](?job_to_be_done_slug=check-weather-for-outing-or-trip) (`check-weather-for-outing-or-trip`)
- [Compare flight options](?job_to_be_done_slug=compare-flight-options) (`compare-flight-options`)
- [Compare marketing channel performance](?job_to_be_done_slug=compare-marketing-channel-performance) (`compare-marketing-channel-performance`)
- [Create Agent Email Inbox](?job_to_be_done_slug=create-agent-email-inbox) (`create-agent-email-inbox`)
- [Create UGC video ads](?job_to_be_done_slug=create-ugc-video-ads) (`create-ugc-video-ads`)
- [Create and send invoices](?job_to_be_done_slug=create-and-send-invoices) (`create-and-send-invoices`)
- [Deploy an application to the cloud](?job_to_be_done_slug=deploy-application-to-cloud) (`deploy-application-to-cloud`)
- [Enrich B2B contact records](?job_to_be_done_slug=enrich-b2b-contact-records) (`enrich-b2b-contact-records`)
- [Extract data from websites](?job_to_be_done_slug=extract-data-from-websites) (`extract-data-from-websites`)
- [Find a person's business email address](?job_to_be_done_slug=find-business-email-address) (`find-business-email-address`)
- [Find and compare hotels](?job_to_be_done_slug=find-and-compare-hotels) (`find-and-compare-hotels`)
- [Generate a logo or brand image](?job_to_be_done_slug=generate-brand-image) (`generate-brand-image`)
- [Manage a household budget](?job_to_be_done_slug=manage-household-budget) (`manage-household-budget`)
- [Manage a sales pipeline](?job_to_be_done_slug=manage-sales-pipeline) (`manage-sales-pipeline`)
- [Manage advertising campaigns programmatically](?job_to_be_done_slug=manage-advertising-campaigns-programmatically) (`manage-advertising-campaigns-programmatically`)
- [Manage customer support](?job_to_be_done_slug=manage-customer-support) (`manage-customer-support`)
- [Manage project work](?job_to_be_done_slug=manage-project-work) (`manage-project-work`)
- [Plan a local journey](?job_to_be_done_slug=plan-a-local-journey) (`plan-a-local-journey`)
- [Plan meals with nutrition information](?job_to_be_done_slug=plan-meals-with-nutrition-information) (`plan-meals-with-nutrition-information`)
- [Research a topic in depth](?job_to_be_done_slug=research-a-topic-in-depth) (`research-a-topic-in-depth`)
- [Research website traffic](?job_to_be_done_slug=research-website-traffic) (`research-website-traffic`)
- [Reserve a restaurant table](?job_to_be_done_slug=reserve-restaurant-table) (`reserve-restaurant-table`)
- [Retain agent memory across sessions](?job_to_be_done_slug=retain-agent-memory) (`retain-agent-memory`)
- [Review business financial reports](?job_to_be_done_slug=review-business-financial-reports) (`review-business-financial-reports`)
- [Route requests across language models](?job_to_be_done_slug=route-llm-requests) (`route-llm-requests`)
- [Schedule meetings](?job_to_be_done_slug=schedule-meetings) (`schedule-meetings`)
- [Search the web](?job_to_be_done_slug=search-web) (`search-web`)
- [Send SMS programmatically](?job_to_be_done_slug=send-sms-programmatically) (`send-sms-programmatically`)
- [Send transactional email](?job_to_be_done_slug=send-transactional-email) (`send-transactional-email`)
- [Synthesize speech from text](?job_to_be_done_slug=synthesize-speech-from-text) (`synthesize-speech-from-text`)

---
Agents: install the `open-agent-guide` skill or register the MCP server at `/mcp` to keep this catalog on hand across sessions. Sign up at `/api/v1/users/signup/` to raise your rate limits and unlock catalog corrections, product following, and decision callbacks.

Content licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).