Clearbit Connect: What Happened to the Gmail Extension
Clearbit Connect was the free Gmail sidebar for finding work addresses. The vendor named it for discontinuation in 2025. Here is what replaced the job it did.
Clearbit Connect was a free Gmail extension for finding and verifying work addresses in the inbox. Clearbit's changelog named it for discontinuation on 30 April 2025 alongside four other free products, as part of the HubSpot acquisition. Competing vendors' extensions cover ad-hoc lookups.
Key takeaways
- Clearbit's own changelog of 13 February 2025 named Connect for discontinuation on 30 April 2025, with the free platform, Weekly Visitor Report, TAM Calculator and free Slack integration.
- A direct fetch of the extension's Chrome Web Store listing returns an error payload rather than a page, which is consistent with removal but is a failed request rather than proof.
- Searches for connecting Clearbit split between the extension and wiring Clearbit into a CRM, and the second question now resolves into HubSpot edition and credit decisions.
- The job Connect did splits in two: ad-hoc lookups, which a competing extension and free tier cover, and list building, where an extension is the wrong instrument at any price.
Reviewed and updated August 14, 2026
Clearbit's changelog entry of 13 February 2025 names five products for discontinuation on 30 April 2025: the free Clearbit Platform, the Weekly Visitor Report, the TAM Calculator, the free Slack integration, and Clearbit Connect. Connect was the Gmail sidebar extension that let you find and verify a work address without leaving your inbox, and for a lot of sales teams it was the only Clearbit product they ever touched.
If you are searching for it now, this page explains what it was, what the announcement means in practice, what the search phrase usually means today, and what does the same job.
What Clearbit Connect was
Connect was a browser extension for Gmail. It put a panel beside the compose window where you could type a company domain, see the people Clearbit held records for, and drop a verified address straight into the To field. There was a free tier with a monthly lookup allowance, which is why it spread through sales teams faster than any paid Clearbit product.
The appeal was that it removed a context switch. Finding an address usually means leaving the inbox for a data tool, running a lookup, copying a string and coming back. Connect collapsed that into the window you were already in, and the friction it removed was larger than the feature list suggested.
What happened to it
The vendor announced the retirement itself. The relevant sentence in the changelog reads that on 30 April 2025 the free Clearbit Platform, Weekly Visitor Report, Clearbit Connect, TAM Calculator and Clearbit free Slack integration will be discontinued. That announcement sits inside the wider story of HubSpot acquiring Clearbit and folding the data capability into Breeze Intelligence, which our page on Clearbit enrichment covers in full.
We attempted to check the extension's Chrome Web Store listing directly, at both the canonical URL and the extension ID. Neither request returned a listing page: the store served an error payload with a noindex directive and an empty title, and the word Clearbit does not appear anywhere in the response. A failed request is not proof that a listing has been removed, and it should not be read as one. Combined with the vendor's own discontinuation notice, though, it is not an encouraging signal for anyone hoping to install it today.
Clearbit's remaining surfaces support the same reading. The homepage announces the HubSpot acquisition, clearbit.com/pricing serves that same page rather than a pricing table, and the only account link anywhere on the site is a login for existing customers.
- 13 Feb 2025Discontinuation announced
The changelog names Clearbit Connect among five products to be discontinued, alongside the free platform, the Weekly Visitor Report, the TAM Calculator and the free Slack integration.
- 30 Apr 2025Stated end date
The date given in that announcement for all five products.
- 14 Aug 2026Store listing does not resolve
A direct fetch of the extension's Chrome Web Store URL returns an error payload rather than a listing. This is a failed fetch, not independent confirmation of removal.
The other thing this search means
A meaningful share of searches for connecting Clearbit are not about the extension at all. They are people trying to wire Clearbit into something else: a CRM, a form, a customer data platform, a support tool. Clearbit's own help centre carries an article on connecting HubSpot to Clearbit, and integration directories carry connector listings for it.
That version of the question now has a different answer too. Where the data has moved inside HubSpot, connecting Clearbit to HubSpot is no longer an integration you build; it is a product decision about which HubSpot edition and credit allowance you hold. For anything else you were planning to connect it to, the relevant surface is the API, and the current state of that is covered in our guide to the Clearbit API.
What actually replaces the in-inbox lookup
The job Connect did splits into two jobs that are worth pricing separately, because conflating them is how teams end up paying for a platform when they wanted a sidebar.
- You are writing to one person right now
- A browser extension or a single search is the right shape
- Free tiers usually cover the real volume
- Speed matters more than cost per lookup
- You need addresses for hundreds of rows at once
- An extension is the wrong tool at any price
- Cost per correct address is the metric
- A provider sequence beats any single lookup tool
For the one-off lookup, most of the established email-finding vendors ship a browser extension with a free monthly allowance, and the allowance is usually generous relative to how often a person genuinely needs an ad-hoc address. Hunter's verifier, for example, publishes a free plan allowance of 100 verifications a month, and we cover how its checks behave in our page on the Hunter email verifier.
For the list build, an extension is the wrong instrument regardless of which vendor makes it. A waterfall runs providers in order, stops at the first confident result, and only pays the next stage for the rows the previous stage could not resolve. The stack we run is MillionVerifier brute-force first, then Prospeo, then Findymail, with no fourth paid stage, and the protocol for testing any provider against rows you already hold verified addresses for is in our guide to email finder tools.
If you want the field rather than a single replacement, our Clearbit alternatives roundup covers the category.
What an inbox lookup can and cannot tell you
Whichever extension you land on, the verdict it shows beside an address is narrower than it looks, and the gap matters more when you are about to send rather than when you are building a list you will check later.
A green tick means a mail server accepted the address. It does not mean the address belongs to the person whose name sits above it. Those two things come apart in two situations that are common on exactly the kind of lookup an inbox extension is used for.
The first is accept-all domains. A catch-all server accepts mail to every local part on the domain, so any address you invent on it verifies. An extension showing a positive verdict on a catch-all domain has told you about the server's configuration and nothing about whether a mailbox exists. Our position on those contacts is that the catch-all tail gets banked rather than guessed at.
The second is the right mailbox at the wrong surface. An address can be perfectly deliverable and still reach somebody at a company they left, or at a parent brand that does not run the division you are writing to. No verification step is capable of seeing that, by construction.
Neither point argues against using a lookup extension. Both argue for treating a verification verdict as a deliverability signal rather than an identity signal, and for checking identity separately when the message matters. A bounce that never happens is good news about the mail server and no news at all about whether the right person read it.
Choosing a replacement extension
Three questions separate the options faster than a feature comparison does.
What does the free tier actually meter? Some vendors meter searches, some meter verifications, and some price a verification at a fraction of a search. That difference decides whether a free allowance covers your real pattern of use, because looking up ten people to find one address consumes very differently under each model.
Does it charge for a miss? A lookup that returns nothing should cost nothing, and vendors vary on this. It is a small line in a pricing page and a large one in a monthly bill when your market is one the vendor covers poorly.
Where does the data go? An extension that quietly writes every address you look up into a shared workspace, or that syncs to a CRM by default, is making a decision about your data that belongs to you. Check it once at install rather than discovering it later.
Two things worth taking from this
A free tool inside a paid platform is the first thing cut. All five products in that changelog entry were free surfaces. Free tools are marketing, and marketing gets rationalised when a company is absorbed. If a free extension is doing real work in your process, that is worth knowing about before somebody else decides its fate.
An extension is a habit, not an integration. Connect's real value was that it lived where the work happened. When it went away, what broke was not a data pipeline but a set of muscle memories across a sales team, which is harder to notice and harder to replace. Anything that sits in a daily workflow deserves the same question you would ask of an API dependency: what happens to the work if this disappears next quarter.
The short version
Clearbit Connect was a free Gmail extension for finding and verifying work addresses without leaving the inbox. Clearbit's own changelog named it for discontinuation on 30 April 2025, alongside the free platform, the Weekly Visitor Report, the TAM Calculator and the free Slack integration. A direct fetch of its Chrome Web Store listing returns an error rather than a page, which is consistent with removal without proving it. The wider context is that HubSpot acquired Clearbit and the data now lives inside HubSpot's credit-priced products. For ad-hoc lookups, a competing vendor's extension and free allowance does the same job. For list building, an extension was never the right tool, and a sequence of providers is.
If you would rather see the whole motion running on your own ICP without assembling a data stack first, start a free campaign and we will build the list, the copy and the sending infrastructure around it.
Pricing and features verified as of August 2026. Verify current terms with the vendor before relying on them.
Frequently asked questions.
Frequently asked questions- Is Clearbit Connect still available?
- The vendor announced its discontinuation for 30 April 2025 in a changelog entry published that February, alongside four other free Clearbit products. When we fetched the extension's Chrome Web Store URL directly, the store returned an error payload rather than a listing, which is consistent with removal though a failed request never proves absence on its own.
- What was Clearbit Connect used for?
- It was a Gmail extension that put a lookup panel beside the compose window. You entered a company domain, saw the people Clearbit held records for, and inserted a verified address into the message without leaving the inbox. A free monthly allowance is why it spread through sales teams faster than any paid Clearbit product.
- How do I connect Clearbit to HubSpot now?
- That is no longer an integration you build. HubSpot acquired Clearbit and folded the data capability into its own platform, so access is a question of which HubSpot edition and credit allowance you hold rather than of connecting two systems. Clearbit's remaining site offers only a login for existing customers, with no purchase path.
- What is a good replacement for Clearbit Connect?
- For occasional lookups while writing a message, most established email-finding vendors ship a browser extension with a free monthly allowance that covers realistic ad-hoc volume. For building lists at scale, no extension is the right tool; run a sequence of providers in order and measure cost per correct address rather than raw hit rate.
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