Home Integrations Connecting HubSpot, Apollo, Instantly, and Constant Contact

Connecting HubSpot, Apollo, Instantly, and Constant Contact

Last updated on Apr 22, 2026

AskScout connects to your existing outreach tools so you can push contacts and delegate sequences without re-entering data. Here's how to connect each one and what you can do once connected.

HubSpot

Connecting

  1. Go to Account → Integrations

  2. Find the HubSpot section and click Connect HubSpot

  3. You'll be redirected to HubSpot's OAuth page — log in and approve access

  4. You'll be sent back to AskScout with HubSpot connected

What you can do

Push contacts to HubSpot

From any contact list, open the list menu → Export to HubSpot. Contacts are created or updated in your HubSpot CRM.

Run sequences via HubSpot

When creating or editing a sequence in AskScout, change the execution mode to HubSpot. Scout will enroll your contacts into the HubSpot sequence of your choice instead of sending via Scout's own email engine.

This means the actual sending, tracking, and reply handling all happens inside HubSpot — Scout just handles the research and enrollment.

Disconnecting

Go to Account → Integrations → HubSpot → Disconnect.


Apollo

Connecting

  1. Go to Account → Integrations

  2. Find Apollo and click Connect Apollo

  3. Complete the OAuth flow or enter your Apollo API key when prompted

  4. Apollo is now connected

What you can do

Push contacts and companies

From a contact list → Export to Apollo. Contacts are upserted into Apollo's people database; companies are created/updated separately.

Run sequences via Apollo

In a sequence's Settings tab, set execution mode to Apollo. Then pick which Apollo emailer campaign to enroll contacts into, and select which Apollo email account (mailbox) to send from.

Apollo handles the actual sending and deliverability from there. Enrollment status (queued → processing → completed/failed) is tracked back in the AskScout sequence activity tab.

Disconnecting

Go to Account → Integrations → Apollo → Disconnect.


Instantly

Connecting

Instantly uses an API key rather than OAuth:

  1. Log into your Instantly account

  2. Go to Instantly Settings → API Keys and copy your API key

  3. In AskScout go to Account → Integrations → Instantly

  4. Paste the API key and click Connect

What you can do

Push contacts

From a contact list → Export to Instantly. Contacts are added to your Instantly workspace.

Run sequences via Instantly

In a sequence's Settings tab, set execution mode to Instantly. Pick which Instantly campaign to add contacts to. Instantly takes over sending from there.

Disconnecting

Go to Account → Integrations → Instantly → Disconnect.


Constant Contact

Connecting

  1. Go to Account → Integrations

  2. Find Constant Contact and click Connect

  3. Complete the OAuth flow — log into your Constant Contact account and approve access

What you can do

Push contacts

From a contact list → Export to Constant Contact. Contacts are added to your CC account.

Run sequences via Constant Contact

In a sequence's Settings tab, set execution mode to Constant Contact. Pick which Constant Contact list to add contacts to. Your CC automation or campaign handles the rest.

Disconnecting

Go to Account → Integrations → Constant Contact → Disconnect.


Which integration should I use?

You can connect multiple tools at the same time. Each sequence picks one execution mode — so one sequence can run via Scout, another via Apollo, and so on.


Troubleshooting

My contacts aren't appearing in HubSpot/Apollo after pushing

These are async jobs that can take a few minutes. Check the activity tab on your sequence or the Outreach page for the batch job status (queued → processing → completed/failed).

The sequence enrollment failed with an error

The most common cause is an expired or revoked OAuth connection. Go to Account → Integrations, disconnect the affected tool, and reconnect it. Then retry the enrollment.

I don't see my HubSpot sequences / Apollo campaigns in the picker

Make sure the connected account has access to those sequences/campaigns. If you just created them in HubSpot/Apollo, wait a minute and refresh the picker — it pulls live from those APIs.