App leveraging Single Send API for Lower-Tier HubSpot Accounts

Developer Support APIs & Integrations
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1

I’m a developer at LaunchNotes, and we’ve built an integration with HubSpot that is currently an unverified, unlisted app.

Our integration relies on the Single Send API, but from our testing, it looks like this functionality is only available for Marketing Hub Enterprise accounts. We’d love to support a broader range of users, including those on lower-tier HubSpot plans like Marketing Hub Professional.

Does anyone know if there’s a way to enable access to the Single Send API on our app when installed in a lower-tier account? Are there alternative approaches or workarounds that have worked for other developers?

Any insights or experiences would be greatly appreciated!

2

Hey, @TeddyLaunches :waving_hand: Welcome to the community. You are not missing an option, the Marketing Single Send API is only available to Marketing Hub Enterprise customers. There is not a way to unlock or make it available for other HubSpot subscriptions.

We’ll leave this open in case other community app builders have any addition feedback for you.

Best,

Jaycee

3

Thank you, Jaycee! I really appreciate your response.

Just to clarify—are you saying that even if we go through the process of getting our app verified and listed on the HubSpot App Marketplace, this functionality would still be restricted to HubSpot Marketing Hub Enterprise customers?

We’ve developed what seems to be an uncommon integration. LaunchNotes allows users to create emails and send them to a targeted list of subscribers. Our integration is designed to route these emails through HubSpot, ensuring that all email activities and analytics are consolidated within the HubSpot platform.

Here’s how it works:

  • We sync the subscriber list in LaunchNotes with HubSpot contacts who have explicitly opted into a designated email subscription type. This ensures that every subscriber targeted in LaunchNotes is an active, subscribed contact in HubSpot. Based on our testing, this part of the integration functions well across all HubSpot plans.
  • For email sending, the only viable approach we found was using HubSpot’s Single Send API. To make this work, we guide users to create a custom email template in HubSpot containing three variables that map to the email content from LaunchNotes.

Our ultimate goal is to provide a seamless experience where users publish in LaunchNotes, and emails are automatically sent via HubSpot.

Would you recommend exploring another API or alternative method for sending these emails through HubSpot?

4

Hi TeddyLaunches,
1. Use the Marketing Email API (For Professional Users)
While the Single Send API is Enterprise-only, you can leverage the Marketing Email API to send one-off emails, although with some limitations:
- API Endpoint:
Use the Marketing Email API to trigger email sends. This requires creating an email template in HubSpot first and then sending it programmatically.
- Limitations:
> Requires the email to be pre-designed in HubSpot.
> Lacks some dynamic personalization capabilities compared to Single Send API.
Example Code:
POST https://api.hubapi.com/marketing/v3/marketing-emails/{emailId}/send
Authorization: Bearer YOUR_ACCESS_TOKEN
Content-Type: application/json
{
“emailId”: “123456”,
“message”: {
“to”: “recipient@example.com”,
“from”: “sender@example.com”,
“subject”: “Hello from HubSpot”,
“customProperties”: {
“first_name”: “John”
}
}
}
2. Custom Integration via External Email Service Providers
You can also consider integrating with an external ESP (Email Service Provider) like SendGrid, Mailgun, or Amazon SES:
Pros: Full control over email sending, templates, and tracking.
Cons: Additional cost and complexity in managing two platforms.
You can trigger emails via HubSpot workflows or APIs, and then use your ESP for actual email delivery.