HubSpot Marketing Emails (BYOK)

HubSpot Marketing Emails (BYOK) — connector documentation

• MCP endpoint: https://byok-hubspot-marketing-emails.connectorbay.com/mcp
• REST API: POST https://byok-hubspot-marketing-emails.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-hubspot-marketing-emails.connectorbay.com/openapi.json
• Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
• Authentication: your own HubSpot Marketing Emails HubSpot private app access token (scope: content), sent in the X-Upstream-Key header of every request (never stored, logged or cached)
• Health: https://byok-hubspot-marketing-emails.connectorbay.com/health · Tool schemas: https://byok-hubspot-marketing-emails.connectorbay.com/tools.json
• Publisher: Unify Dynamics LLC · connectorbay.com/byok-hubspot-marketing-emails · agent@connectorbay.com

What HubSpot Marketing Emails (BYOK) is for

HubSpot Marketing Emails (BYOK) lets an AI assistant read your own HubSpot Marketing Emails data through the HubSpot Marketing Emails API with a key you supply (HubSpot private app access token (scope: content)). Read-only: 6 tools (list_marketing_emails, get_marketing_email, get_email_statistics, get_email_statistics_histogram, list_email_revisions, get_ab_test_variation). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to api.hubapi.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by HubSpot Marketing Emails. HubSpot Marketing Emails and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

• "Which marketing emails did we publish this quarter?"
• "What are the details and open rate of marketing email 12345678?"
• "How did our marketing emails perform in September?"
• "Show weekly marketing email opens for the last two months"
• "What earlier versions exist of marketing email 12345678?"
• "What is the B variant of A/B email 12345678?"

What it does

• list_marketing_emails: List marketing emails in the HubSpot account with name, subject, type, state, publish date and campaign; optional statistics. Email bodies are not returned.
• get_marketing_email: Get one marketing email: name, subject, type, state, sender name, campaign, workflows and optionally its statistics. The body is not returned.
• get_email_statistics: Get aggregated counters (sent, delivered, opened, clicked, bounced) and ratios for all marketing emails sent in a time range.
• get_email_statistics_histogram: Get email counters and ratios split into time intervals (year to second) over a time range, for trend questions.
• list_email_revisions: List earlier saved versions of a marketing email with version id, name, subject, state and update time.
• get_ab_test_variation: For an A/B tested marketing email, get the other variant with its name, subject, state and campaign.

BYOK key

You bring your own HubSpot Marketing Emails HubSpot private app access token (scope: content) (https://developers.hubspot.com/docs/apps/legacy-apps/private-apps/overview). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to api.hubapi.com over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

• https://developers.hubspot.com/docs/api-reference/overview (the API this connector calls, with a BYOK key)

Live from the HubSpot Marketing Emails API (api.hubapi.com) with a BYOK key; documentation: https://developers.hubspot.com/docs/api-reference/overview. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by HubSpot Marketing Emails. HubSpot Marketing Emails and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your HubSpot Marketing Emails account.

Built for: Worldwide. Languages: English.

HubSpot Marketing Emails (BYOK) — Privacy Policy

Effective 24 October 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What HubSpot Marketing Emails (BYOK) is. HubSpot Marketing Emails (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own HubSpot Marketing Emails data: Read your HubSpot marketing emails, their send statistics, revisions and A/B test variants with your own private app access token. You bring your own HubSpot Marketing Emails HubSpot private app access token (scope: content); the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one HubSpot Marketing Emails call you asked for. Our application does not store it, write it to a log, put it in a cache, or share it. It is sent only to api.hubapi.com, over https, and is removed from any text we return to you or your assistant. We do not follow redirects with your key. If HubSpot Marketing Emails rejects it, we say so without repeating it.

What we receive. The arguments of each tool call, the BYOK key (for that call only), the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant) and standard server logs. What HubSpot Marketing Emails receives. The request we make on your behalf, including the key and the arguments, under HubSpot Marketing Emails's own terms and privacy policy. HubSpot Marketing Emails acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer HubSpot Marketing Emails gives for your request, trimmed to the fields the tool documents. We do not keep it: it is returned to your assistant and not stored, cached or used to train anything.

What we do not do. We do not build a profile, sell or share personal information, or keep your HubSpot Marketing Emails data. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses, request paths and status codes) are kept for up to 30 days for security and abuse prevention; our application adds no request headers or bodies to them.

Sub-processors. HubSpot Marketing Emails (the API you call with a BYOK key, at your direction). Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. Revoke your key at HubSpot Marketing Emails at any time to end all access.

Children. HubSpot Marketing Emails (BYOK) is a general-audience service operated by the adult using the assistant, under HubSpot Marketing Emails's own age rules.

Changes. We will post changes here with a new effective date.

HubSpot Marketing Emails (BYOK) — Terms of Service

Effective 24 October 2026. These terms govern use of the HubSpot Marketing Emails (BYOK) connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

1. The Service. HubSpot Marketing Emails (BYOK) provides: Read your HubSpot marketing emails, their send statistics, revisions and A/B test variants with your own private app access token. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
2. Your own key, your own account. You must use your own HubSpot Marketing Emails credentials and only access data you are allowed to access. HubSpot Marketing Emails's terms apply to your use of HubSpot Marketing Emails; you are responsible for complying with them, including any rate limits and permitted uses. Do not share a key you do not own.
3. Independent. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by HubSpot Marketing Emails. HubSpot Marketing Emails and its logos are trademarks of their owners and are used only to say which service the connector works with.
4. No advice, no guarantees. Output is the data HubSpot Marketing Emails returns, lightly trimmed; it may be incomplete, delayed or changed by HubSpot Marketing Emails. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your HubSpot Marketing Emails account.
6. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to access data you are not entitled to, to circumvent HubSpot Marketing Emails's controls, or to attack any system.
7. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time; HubSpot Marketing Emails may change or end its API at any time.
8. Data. Our Privacy Policy describes what we process. In short: the BYOK key is used for the one call and not stored or logged.
9. Pro keys. Optional ConnectorBay Pro API keys are issued at our discretion and are separate from your HubSpot Marketing Emails key.
10. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service, including any action HubSpot Marketing Emails takes on your account. Our total liability is limited to US $100.
11. Governing law. California law; venue in San Mateo County, California.
12. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/byok-hubspot-marketing-emails

HubSpot Marketing Emails (BYOK) support

Email agent@connectorbay.com. We answer within two business days.

• MCP endpoint: https://byok-hubspot-marketing-emails.connectorbay.com/mcp
• REST API: https://byok-hubspot-marketing-emails.connectorbay.com/openapi.json
• Live status: https://byok-hubspot-marketing-emails.connectorbay.com/health

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. HubSpot Marketing Emails (BYOK) never asks for them.