Skip to content

Outbound integrations for HubSpot, Salesforce, and Close

Browse outbound integrations for HubSpot, Salesforce, and Close across sales engagement platforms, AI agents, automation tools, and data providers.

Castor mascot illustrating integrations and data flow

Showing 24 of 42 integrations grouped by tier (page 1 of 2)

Gold

EmailBison

EmailBison provides a secure, deliverability-focused email engagement platform with automated sequencing.

Sales Engagement Platform Live
Gold

HeyReach

HeyReach provides B2B social automation tools for agencies and sales teams, enabling efficient, genuine outreach.

Sales Engagement Platform Live
Gold

HubSpot

HubSpot provides an AI-powered platform for marketing, sales, service, and content, helping businesses grow.

CRM Software Live
Gold

Instantly

Instantly offers an end-to-end lead gen platform with AI-powered automated outreach, B2B lead database, and more.

Sales Engagement Platform Live
Gold

Salesforce

Salesforce is the world's leading AI-powered CRM, bringing every business function into one unified platform.

CRM Software Live
Gold

Smartlead

Smartlead is an AI-powered sales engagement platform helping businesses scale outreach via cold emailing.

Sales Engagement Platform Live
Silver

Clay

Clay is an AI-native sales engagement platform automating prospecting, enrichment, and personalized outreach.

Sales Engagement Platform Live
Bronze

Aimfox

Aimfox is an AI-powered platform specializing in B2B social outreach, offering automated outreach at scale.

Sales Engagement Platform Beta
Bronze

Brevo

Brevo is an email and marketing automation platform offering transactional email, SMS, and CRM tools for growing businesses.

Sales Engagement Platform Beta
Bronze

Close

Close beta CRM integration in OutboundSync. Connect Close as a Connected Account and sync one-way email and social activity into Lead records.

CRM Software Beta
Bronze

Drippi

AI-powered sales engagement platform helping agencies automate personalized X (Twitter) outreach and research.

Sales Engagement Platform Beta
Bronze

GetSales

Beta direct integration for syncing GetSales email and social activity into HubSpot and Salesforce.

Sales Engagement Platform Beta
Bronze

HotHawk

HotHawk is a SaaS platform offering a unified inbox to streamline sales email outreach and manage multiple accounts.

Inbox Management Beta
Bronze

Lemlist

Lemlist is an omnichannel platform that helps businesses automate and personalize outreach to target accounts.

Sales Engagement Platform Beta
Bronze

Masterinbox

Masterinbox offers an AI-powered unified inbox for agencies and SaaS founders, centralizing outreach in one place.

Inbox Management Beta
Bronze

Mixmax

Mixmax is an AI-native platform that helps sales teams streamline communication and their work.

Sales Engagement Platform Beta
Bronze

OpenClaw

Analyze outbound campaign performance, reply rates, follow-up prioritization, and platform attribution using OutboundSync engagement data in HubSpot or Salesforce—via the OutboundSync Analysis skill in OpenClaw.

AI and Agents Beta
Bronze

Reply.io

Reply.io is a multichannel sales engagement platform combining email and LinkedIn outreach with AI-driven sequences.

Sales Engagement Platform Beta
Bronze

Salesfinity

AI-powered sales dialer platform helping teams accelerate outbound sales and connect with more prospects.

Sales Engagement Platform Beta
Bronze

Salesforge

Salesforge is an AI-powered sales engagement platform for running coordinated email and social outbound.

Sales Engagement Platform Beta
Bronze

SalesRobot

SalesRobot is a two-in-one social and cold email automation platform that integrates with HubSpot and Salesforce.

Sales Engagement Platform Beta
Bronze

SuperSend

SuperSend is a sales engagement platform focused on high-volume email outreach and campaign automation.

Sales Engagement Platform Beta

BetterContact

Data platform that enriches and verifies B2B email addresses and phone numbers by aggregating data from 20+ sources.

Data and Enrichment Beta

ChatGPT

AI platform for conversation, content generation, and enterprise AI solutions made by OpenAI.

AI and Agents Beta

Comparing approaches? See when to use Zapier, Make, n8n, OutboundSync, or a custom integration or jump to a dedicated Zapier alternative , Make alternative , or n8n alternative plus manual logging/BCC guidance for HubSpot, Salesforce, and Close.