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tl;dr of HubSpot Integrations
A HubSpot integration is an app that connects an outside tool to your HubSpot CRM. It either writes a value into a field on a record, or it logs a note against one. That difference decides whether you can filter, report, or automate on what it sends you.
- HubSpot’s App Marketplace holds more than 2,000 apps. HubSpot built 205 of them.
- The most installed are mail and calendar tools: Gmail on 533,309 installs, Google Calendar on 299,330, Outlook on 247,812.
- The HubSpot connector for Claude is the fourth most installed app HubSpot has built, at 198,443 installs. The ChatGPT connector is 11th on 98,842.
- Across the 151 HubSpot-built apps with reviews, the average rating is 2.89 out of 5. 79 of those sit below 3.0.
- Sync direction is set per object, not per integration. An app sold as two-way is usually two-way for contacts only.
- Custom field mappings sit behind Data Hub Starter. On the free tier you get the default mapping and no way to change it.
- tl;dv built its own HubSpot integration. It writes meeting data into contact, deal, and company properties, or logs it as a note activity, and supports text and multi-select fields only.
All figures verified 10 September 2026.
HubSpot integrations are easy to rack up. HubSpot says its average customer runs nine or more apps, yet plenty of those teams still can’t filter a deal list by anything a sales call produced. Connected? Yes. Enriched? Maybe not.
So I pulled the install data for all 205 apps HubSpot has built itself, put their published ratings next to it, and worked through the sync mechanics that decide whether anything usable lands on a record.
What Is a HubSpot Integration? Property Writes vs. Activity Logs
A HubSpot integration is an app that connects an outside tool to your HubSpot CRM. It either writes a value into a field on a record, or it logs a note against one.
A property write puts a value into a named field on a contact, company, or deal. You can filter a list on it, build a report from it, or use it as a workflow condition.
An activity log drops an entry on the record’s timeline instead. You can open it and read it. That’s all.
That distinction is the test I’m applying to every integration below.
Then there’s support. HubSpot supports the apps it builds. A third-party app is supported by whoever built it.
The two quality gates get confused constantly. Listing an app needs three active installs across different HubSpot accounts. Certification needs 60, plus six months on the Marketplace before you can apply.
But “active” is carrying both of those numbers. HubSpot only counts an install as active when it’s a production account unaffiliated with the developer, showing successful app activity in the last 30 days. Your own sandboxes don’t count. Neither does the app someone connected in March and hasn’t opened since.
So certification is the gate to apply as a buyer. Sixty real accounts kept it running for six months. That’s harder to fake than a five-star review.
Two caveats. Certification only exists inside the Marketplace, so it tells you nothing about an integration a vendor distributes from its own site, which is not the same as failing the bar. And a partner tier badge is not certification. Some apps display a “Leading” badge that looks like a quality mark at a glance and isn’t one.
The Most Installed HubSpot Integrations in 2026
I pulled the install count for all 205 apps HubSpot has built itself, from their Marketplace listings, on 10 September 2026.
Below are the top 20. Between them they account for 81.3% of all installs across those 205.
Two things to be clear about. This covers apps HubSpot built, so third-party apps sit outside it, tl;dv’s connector included. And an install count tells you the app was connected, not that anyone is still using it.
| # | App | Installs | Rating |
|---|---|---|---|
| 1 | Gmail | 533,309 | 3.99 |
| 2 | Календарь Google | 299,330 | 4.03 |
| 3 | Outlook | 247,812 | 2.96 |
| 4 | HubSpot connector for Claude | 198,443 | — |
| 5 | HubSpot for WordPress | 171,840 | 3.91 |
| 6 | Zapier | 171,390 | 3.28 |
| 7 | Календарь Outlook | 139,793 | 3.40 |
| 8 | Meta Ads | 127,394 | 3.41 |
| 9 | Google Ads | 120,600 | 3.10 |
| 10 | Навигатор продаж LinkedIn | 114,931 | 1.99 |
| 11 | HubSpot connector for ChatGPT | 98,842 | — |
| 12 | Zoom | 92,237 | 3.44 |
| 13 | LinkedIn Ads | 80,354 | 3.04 |
| 14 | Slack | 79,424 | 3.74 |
| 15 | Google Meet | 74,579 | 4.06 |
| 16 | Microsoft Teams | 63,662 | 3.22 |
| 17 | Google Contacts | 62,239 | 4.04 |
| 18 | 49,287 | 3.21 | |
| 19 | Facebook Messenger | 47,021 | 3.28 |
| 20 | Outlook Contacts | 40,122 | 3.08 |
The most installed apps HubSpot builds are mail and calendar plumbing, not the sales tools every roundup leads with. Gmail has 27 times the installs of Salesforce, which lands 31st on 19,176. Zendesk, which half the HubSpot support content on the internet pairs it with, has 2,813.
Below the top 20 it thins out fast. Median installs across all 205 is 558. 121 apps have under 1,000 installs, and 42 have under 100.
AI Assistant Connectors Are Now Among HubSpot’s Most Installed Apps
The HubSpot connector for Claude is the fourth most installed app HubSpot has built. It sits at 198,443 installs, above Zoom, above Slack, and above every CRM sync HubSpot has built. The ChatGPT connector is 11th on 98,842, and Gemini’s is 46th.
Not one of the three has a review. That’s hundreds of thousands of accounts connected, and nobody has stopped to say whether it works for them.
HubSpot has also shipped workflow actions for most of the same model providers, and almost nobody has installed them. The assistant connectors took the volume. The workflow actions, which is where the automation actually happens, took almost none.
What those connectors can read and write in your CRM is a longer answer, and I’ve put it in the HubSpot MCP piece.
If you’re connecting an assistant, point it at your HubSpot and ask the questions your team already wants answered: which deals have fallen silent, what you agreed with an account in April. The gaps in what comes back will tell you which of your integrations have been writing properties and which have only been adding notes.
An assistant can only work with what’s already on the record.
Install Count Is Not Satisfaction: What HubSpot’s Own Ratings Show
The ratings below are HubSpot’s, published on the same listings as the install counts. I’ve put the two side by side.
HubSpot builds these apps, certifies 136 of them, and the ones with reviews average 2.89 out of 5. That covers 151 apps and 17,873 reviews. 79 of those 151 sit below 3.0.
| App | Installs | Rating | Reviews |
|---|---|---|---|
| Outlook | 247,812 | 2.96 | 3,150 |
| Навигатор продаж LinkedIn | 114,931 | 1.99 | 372 |
| Google Meet | 74,579 | 4.06 | 433 |
| Shopify | 15,368 | 2.27 | 55 |
| QuickBooks Online | 14,930 | 2.10 | 105 |
Look at Outlook. A quarter of a million accounts connected it, 3,150 of them have rated it, and the average sits under 3. LinkedIn Sales Navigator does worse, at 1.99 from 372 reviews.
A household name is not a guarantee. Read the reviews before you install anything. The failure modes people name there are the ones you are about to hit, and they are usually specific: a field that stopped mapping, a sync that ran once and never again, support that went quiet.
How HubSpot Integration Sync Direction, Record Matching, and Conflicts Work
Sync direction is set per object, not per integration. An app sold as two-way is usually two-way for contacts and one-way for everything else, so check deals and companies separately at setup rather than trusting the sales page.
Three settings determine what your team ends up seeing.
- Direction. Whether each object flows one way or both.
- Conflict resolution. Who wins when a rep edits a field in one system and someone else edits it in the other.
- Filters. Which records qualify to sync at all.
The filter is the one that gets overlooked. Leave it empty and every record of that type is in scope. That’s how a pipeline fills up with people nobody meant to import, and a forecast stops meaning anything.
Contact matching runs on email address. No match creates a new record. Two matches is where you start getting the same buyer twice, under slightly different spellings, sitting on two different deals. Test it with a duplicate address before you let it loose on a live pipeline.
On timing, HubSpot documents how sync works but not how fast. So if you need a call logged before the next stand-up, that is a question for the vendor, and you want the worst case, not the average.
tl;dv’s connector publishes its rules, so it is worth looking at here. It matches on the calendar invitee’s email. Deal and company updates flow through the matched contact, so if the contact does not match, the deal and the company get nothing either. And there is a toggle that creates a new contact when nobody matches, using the invitee’s email and name, with lifecycle stage set to Lead.
Zendesk handles the same problem differently, which I’ve written up in the Zendesk integrations breakdown.
Which HubSpot Integrations Enrich Your CRM, and Which Only Log a Note
Back to the test. Every integration either writes a value into a field or drops a note on a timeline.
Enrichment means the data ends up somewhere you can use it. You can filter a list by it, pull it into a report, or trigger a workflow off it.
So when you’re assessing an integration, ask what it does per object. Does it write properties or log activities, and does that answer change for contacts, deals, and companies? Plenty of tools write properties on contacts and only log activities on deals, which is backward if you’re running a pipeline.
Say it does write properties. The next thing is which fields it writes to, and this is where HubSpot’s documentation caught me out.
Data sync connectors come with default field mappings, and you can’t edit or delete them. Turning one off is the only choice you get. So if the connector decides your call outcome goes in a field nobody on your team looks at, it stays there unless you can build your own mapping.
HubSpot will offer to build those mappings for you, comparing field names across both systems and suggesting matches, custom properties included. Treat that as a first draft. Accept all of them without checking, and you end up with a phone number sitting in a mobile field that another app also writes to, and the two overwrite each other every day.
Some fields won’t map at all. Calculated fields and multi-selects are the usual two.
And then there’s the thing I’d want to know before I started, not halfway through.
| Возможности | Бесплатно | Data Hub Starter |
|---|---|---|
| Data sync between apps | Да | Да |
| Default field mappings | Да | Да |
| Custom field mappings | Нет | Да |
| Complex sync rules | Нет | Да |
Custom field mappings sit behind Data Hub Starter. On the free tier you get whatever the default mapping decided, which for a lot of teams means a connector that technically writes properties, just not to the fields anyone is reporting on.
The tl;dv HubSpot Integration: What It Writes to Your CRM
tl;dv has its own native HubSpot integration that connects your meetings library directly into HubSpot. Our sales team uses it every day, and it means HubSpot is always holding the most relevant data on pipeline, on deals, and on what was actually said. Between the integration itself and the tl;dv MCP, they save hours of admin and can pull up what they need in seconds.
Here’s how it works. tl;dv records the call, pulls out what matters, and writes it straight onto the contact, deal, or company. No rep typing up notes afterwards. No deal record that’s three conversations out of date.
You connect it directly in your tl;dv account, from the integrations tab, rather than installing it from the App Marketplace. So there’s no certified badge on this one to check, and the questions further down are the ones to hold it to instead.
And it does both of the things this piece has been separating. It writes values into properties, and it logs activities on the timeline. You pick which, per workflow.
Every workflow has a trigger and an action. The trigger fires when a recording is ready, and you narrow it by meeting title, so only the calls you care about reach the CRM.
Then the action decides where the data lands. Update contact, deal, or company writes into properties. Create activity logs a note.
The good bit is what goes into those properties. Every field gets its own AI prompt, so a deal comes back with separate structured values instead of one block of summary text.
That’s your qualification framework, sitting in CRM properties. Filter a deal list by competitor. Report on every deal with no timeline recorded. You can even trigger a workflow when nobody mentions a purchasing process.
The same mechanism handles call scoring, with a full rubric written into one prompt field.
And when something belongs on the timeline rather than in a field, the activity route takes the meeting title, AI notes, and transcript.
The result is that nobody has to remember anything. A rep finishes a demo and the competitor, the timeline, and the pain points are already on the deal before they open it. Pipeline reviews get faster because the data is there. Forecasts get better because it’s there for every deal, not just the ones somebody had time to write up.
What to Ask Before You Connect a HubSpot Integration
- Does it write named properties, or only log a timeline activity?
- Which objects does it sync, and in which direction for each one?
- What is the matching key, and what happens when nothing matches?
- Can I filter which records sync, and is that filter available on my tier?
- Which property types will it refuse to map?
- Who supports this app, HubSpot or the vendor?
Get the answers before you install, not after. Record matching is the expensive one to unpick.
Your CRM can only tell you what your integrations put in it. If the last three calls on a deal are sitting as notes nobody has opened, that’s a data problem, not a reporting problem. Get tl;dv free, connect HubSpot from the integrations tab, and build one workflow on your demo calls. Pick three fields that matter to your pipeline and let the calls fill them. If you get stuck on the field mapping, let us know and we can help.FAQs About HubSpot Integrations
What permissions do I need to install a HubSpot integration?
Super Admin, or App Marketplace access permissions. Some apps ask for additional scopes at the authorisation screen, which you grant separately when you connect.
Are HubSpot integrations free?
The Marketplace listing is free to browse and most apps have a free tier, but the app’s own pricing applies. HubSpot requires listed pricing to match what the vendor publishes on its own site.
Can I test an integration without risking my live data?
Set up a separate free HubSpot portal on a different email. The free CRM has no time limit, so a test portal costs nothing and stays isolated from anything you care about.
What happens when deal stage or dropdown values don't match?
The sync fails for that field. HubSpot dropdown properties only accept values already defined in them, so a mismatch drops the value rather than creating a new option.
Does tl;dv write meeting data into HubSpot properties, or just log a note?
Both, depending on which workflow you build. It can update fields on a contact, deal, or company, or create a note activity on the record. The limitation to know about is that only text and multi-select fields are supported, so a numeric score or a date field can’t receive meeting data directly.
Which HubSpot integration is the most popular?
Gmail by a wide margin. It has 533,309 installs, ahead of Google Calendar on 299,330 and Outlook on 247,812. Across all 205 apps HubSpot has built, the total comes to 3.4 million installs.
