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Connect Gmail to Hunter.io

Hunter finds and checks email addresses; Gmail is where you actually write to people. Connecting them means outreach goes only to addresses that exist, new leads are checked before you spend time on them, and personal first emails go out from your own address.
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Ideas

What you can do with Gmail and Hunter.io

Lead alerts, verified outreach and personal first emails sent from your own Gmail. These are ready-made starting points. Anything else you can describe works too.
The moment it happens

Get an email only for strong form leads

When someone fills in your form, their email is checked and enriched with Hunter, and you get an email only if they look like a real business lead.

See how it works
DailyAI

Find prospects' emails and send a personal intro each day

Each day the next people on your list get their email found with Hunter and a short, personal intro sent from your Gmail, up to a daily limit.

See how it works
Daily

Send your outreach only to verified addresses

Before each day's outreach goes out, every address is checked with Hunter and only the valid ones are emailed from your Gmail.

See how it works Your own logic

Any other automation you can describe in words

Your own rules, schedule and AI steps with Gmail and Hunter.io, plus any other app. Describe it and your assistant builds it.

See how to build your own

Build your own

Build any Gmail and Hunter.io automation you can describe

The ideas above are ready-made starting points, not a fixed list. Describe what should happen between Gmail and Hunter.io in your own words, with your conditions, other apps or an AI step, and your assistant writes it, tests it and runs it on ClickRuntime.

  • Your own rules

    Conditions, thresholds, filters and exceptions, written the way you'd explain them to a colleague.

  • Any number of apps

    One automation can read from one app and update several others. Over 248 apps are ready, and anything with an API works too.

  • AI where it helps

    Summaries, classification, extraction and drafts use ClickRuntime's built-in AI, with no extra key.

  • On a schedule or on each event

    Runs as often as every 5 minutes, or the moment an app sends an event, and keeps track of what it already handled.

For example, ask your assistant

Only send outreach when Hunter says the email is valid, and send at most 30 emails a day spread across working hours.

If no reply after 4 days, send one short follow-up in the same thread, then stop.

Use cases

Why people connect Gmail and Hunter.io

How the two apps work together

  • A check every few minutes reads Gmail for lead emails or a list you provide.
  • The script calls Hunter to find or verify the email and looks up company details.
  • It sends or drafts personal emails from Gmail and tracks replies.

  • Founders doing their own outreach

    A name and company are turned into a verified work email and a personal Gmail message. Outreach comes from a real inbox.

  • Sales reps enriching inbound leads

    Form leads arriving by email are checked with Hunter for company and role. Reps focus on the best ones.

  • Recruiters contacting candidates

    A candidate's work email is found and a short note is sent. Replies come to Gmail.

  • Marketers cleaning lists before sending

    Addresses are verified before a send. Bounces drop and sender reputation is protected.

More apps

Gmail, Hunter.io and other apps in one automation

An automation isn't limited to two apps. Add the next step in another app and it runs as part of the same automation.

Outreach log

Log every email found by Hunter and sent from Gmail to my Google Sheet with date and reply status.

Create contacts

When Hunter verifies an email, create a HubSpot contact and send the first email from Gmail.

Reply alerts

Post to #sales when a prospect replies to an outreach email in Gmail.

Setup

Connect Gmail and Hunter.io once

Every idea on this page uses the same two connections, so you set them up once. If one is missing, your assistant tells you and links to the right place.

Gmail

Email

  1. At console.cloud.google.com, create a project and enable the Gmail API under APIs & Services → Library.
  2. Set up the OAuth consent screen. On Google Workspace choose Internal. On a personal Gmail account choose External, then under Audience click Publish app so it is In production, not Testing.
  3. Under Data Access, add the scopes you need, such as https://www.googleapis.com/auth/gmail.modify, or gmail.send if you only want to send.
  4. Under Clients, create an OAuth client of type Web application with the redirect URI https://clickruntime.com/oauth/callback.
  5. In the ClickRuntime dashboard, open Connections, choose Gmail and enter the client ID and secret. On a personal account Google shows an unverified-app screen: click Advanced, then go to your app.

Hunter.io

Email finder

  1. Sign in to Hunter and open the API keys page in your dashboard.
  2. Copy your key, or generate a new one.
  3. In the ClickRuntime dashboard, open Connections & secrets and save the key as a secret for Hunter. It is sent in the X-API-KEY header.

FAQ

Questions about connecting Gmail and Hunter.io

Which address do the emails come from?
Your own Gmail or Google Workspace address, so replies come back to your inbox as normal.
Do I need a Hunter account?
Yes. Save your Hunter API key in your ClickRuntime dashboard. Each lookup or verification uses credits from your Hunter plan.
How many emails can it send a day?
You set a daily cap, such as 20. Gmail's own sending limits also apply, and a low daily number is better for deliverability on a new list.
Is cold email allowed?
That depends on where you and your recipients are. Keep messages relevant, identify yourself and give people an easy way to opt out.
Does it send follow-ups in the same thread?
Yes. Follow-ups can be sent as replies in the original Gmail thread.
Can it stop when someone replies?
Yes. It checks the thread for replies before each follow-up.
Does Hunter need a paid plan?
Hunter has a free plan with a monthly request allowance. Larger volumes need a paid plan.

Related pages

Keep exploring

Tell your assistant what Gmail and Hunter.io should do together

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