Findymail to Instantly: How to Send Verified Leads into Your Campaigns

To get leads from Findymail to Instantly, either connect Findymail's native Instantly integration (paste your Instantly API key on Findymail's integrations page, pick a campaign, and found contacts go straight in) or export a CSV from Findymail and upload it to an Instantly campaign. Smartlead works the same way through its own native integration. PlusVibe has no Findymail integration listed, so you use CSV, Zapier or the two APIs.

Some tool links here are affiliate links (disclosure). To follow along, open Findymail and Instantly in two tabs. If you are still deciding whether Findymail is the right data source, start with our Findymail review.

Nerdy Joe is a certified Apollo.io Managed Services Partner and a PlusVibe Certified Silver Partner. We are not partners of Instantly or Smartlead (affiliate links only), and we are a Findymail affiliate. We did not run this workflow hands-on for this guide: every step comes from Findymail's integration pages and help center, Instantly's help center, Smartlead's help center and PlusVibe's docs, listed in Sources and checked November 9, 2026.

The three routes at a glance

What Findymail does not document: sync frequency, whether whole saved lists can be pushed at once, or any caps on the push. If those matter to you, test on a small campaign first.

Before you start: limits on both sides

Findymail (as of November 2026)

• Rows per file. Bulk uploads are capped at 5,000 rows on Individual, 25,000 on Team and 50,000 on Scale.
• Shared usage. Findymail says one usage pool is shared across the web app, extension, integrations and API, and by everyone on the plan. Usage plans measure it over rolling 5-hour and 7-day windows, and the allowance per window is not published.
• Credit plan. Starter is $99 per month for 5,000 finder credits; 1 credit per email found, nothing if not found, 10 per phone.
• Free start. A free account includes 10 credits with no card, enough to test the integration but not to build a campaign.

For which plan fits your volume, see the pricing section of our complete Findymail review.

Instantly

Instantly's plans cap uploaded contacts, and per Instantly's help center that cap is a running total rather than a monthly allowance. Duplicates across campaigns count separately.

Check your remaining room on Instantly's pricing page and your workspace before you push a large list, since contacts that do not fit will not land. Our Instantly review explains the plan limits in more depth.

Sending accounts

Connect and warm your mailboxes at least two weeks before you launch. Our guide to cold email infrastructure covers domains, mailboxes and warmup.

Step 1: Find contacts in Findymail

Findymail gives you several ways to build the list. Pick the one that matches your input data, then run it in your Findymail workspace.

Bulk from domains (as documented by Instantly)

Instantly's help center article on Findymail lists these steps:

1. From the Findymail dashboard, go to "Bulk from domains."
2. Upload your CSV file.
3. Select the Website column and enter the job titles you want to include. Click Start.
4. When the search finishes, download the enriched CSV from the results section.

Instantly's article is a third-party document, so Findymail's labels may have changed. Our Findymail Chrome extension guide covers the extension and Sales Navigator route in detail.

Step 2: Decide whether to verify again

Findymail says it finds and verifies each email in one step, and that you do not need to re-verify its data. Instantly's help center agrees in its Findymail article: "All emails found by Findymail are already verified so you can go ahead and import them into your Instantly campaign."

Findymail also notes that third-party verifiers may flag 15 to 20% of its emails as risky, which usually means catch-all addresses. That is the one place we would act:

• Main campaign: addresses Findymail marked deliverable on normal domains.
• Separate, smaller campaign: catch-all addresses, so any bounce spike stays contained and does not drag down your main sending accounts.
• Old lists: if the export sat for months before upload, a second pass is cheap insurance.

Instantly's optional Verify Leads check at upload costs 0.25 credits per lead. Our Findymail email verifier guide compares Findymail's checks with dedicated verifiers.

Step 3, option A: Connect the native Findymail to Instantly integration

Findymail's Instantly page sums it up: "Connect your API key once, pick a campaign, and every contact you find goes straight into your sequence." Contacts are sent "with the associated properties attached," though the page does not list which fields.

Findymail's help center article on setting up Instantly gives these steps:

1. Log into your Instantly account.
2. Go to Settings, then the Integrations tab.
3. Click Copy API Key in the Instantly API section.
4. Visit your Findymail integrations page.
5. Click Connect on the Instantly integration widget.
6. Paste your Instantly API key into the pop-up.
7. Click Confirm.

After that, you pick the Instantly campaign that found contacts should go into.

Two caveats on the API key

Findymail's article says copying the API key "requires Instantly's 'Hypergrowth' plan or above." Instantly's API V2 article, updated October 9, 2026, says "API access is available on all Outbound plans" and that API V1 was deprecated on January 19, 2026, with V2 needing a new key.

Those two documents disagree, and Findymail's article does not say whether its widget expects a V1 or V2 key. If the key from your Settings page is rejected, generate a V2 key following Instantly's developer docs and try again, or ask Findymail support which key type the widget accepts.

Test before you trust it

Push a handful of contacts into a test campaign and open the leads in Instantly. Check which properties arrived (name, company, title) and that your email copy's variables fill correctly before you point the integration at a live campaign.

Step 3, option B: Export a CSV and upload it to Instantly

Use this route for large batches or when you want to clean the list first.

Export from Findymail. Findymail's email finder page says results can be downloaded as a CSV or pushed to CRMs and sequencers. Download the results file once the bulk search finishes.

Clean the file. Remove duplicates, drop rows without an email, and split catch-alls into their own file if you follow the rule in Step 2.

Upload to Instantly, per Instantly's "How to Import Leads via CSV" article:

1. Go to the Engage tab, open your campaign and go to the Leads section.
2. Select Upload CSV and choose your file.
3. Map each column with the dropdown: predefined variables, custom variables, or Do Not Import. "The Email column is mandatory and must be mapped correctly."
4. Leave Check for Duplicates Across All Campaigns/Lists on (it is checked by default) unless you mean to re-contact leads.
5. Tick Verify Leads only if you want Instantly's second check at 0.25 credits per lead.
6. Click Upload all. Instantly says the upload finishes within a few minutes and the lead count updates within 5 minutes.

You will get notices for missing or invalid emails and for skipped duplicates. Fix the file and upload again if many rows drop.

Step 4: Sequence and launch

Once leads are in the campaign, the rest is standard Instantly setup: write the sequence, set the schedule, attach warmed sending accounts and launch with a modest daily limit. Our Instantly review covers campaign settings and deliverability features.

Two habits matter more than any setting. Keep the first send small and watch bounces for a few days. Map Findymail's extra columns (job title, company) to custom variables so you can personalize the first line without editing rows by hand.

The same workflow for Smartlead

Findymail lists a native Smartlead integration with the same promise: connect your API key once, pick a campaign, and found contacts go into it with properties attached. Try Smartlead if it is your sequencer.

Native push to Smartlead

Findymail's help article on Smartlead (updated September 25, 2023, so labels may differ now) gives these steps:

1. Log into your Smartlead account.
2. Click your profile Settings.
3. Click Copy in the Smartlead API Key section.
4. Visit your Findymail integrations page.
5. Click Connect on the Smartlead integration widget.
6. Paste your Smartlead API key into the pop-up.
7. Click Confirm.

CSV upload to Smartlead

Per Smartlead's campaign guide and CSV mapping article:

1. Under Engage, click Campaigns, then + Create Campaign, name it and click Continue.
2. On the Leads tab, click + Add Leads, then Upload CSV File.
3. Check the upload settings: Global Block List, Unsubscribe List, Community Bounce List and Existing Campaign Leads.
4. Review the field mapping, map extra Findymail columns to custom variables, and set unneeded columns to Ignore.
5. Click Import Leads.

Our Smartlead review covers plans, sending limits and agency features.

The same workflow for PlusVibe

PlusVibe is not on Findymail's integrations list as of November 2026, so there is no one-click push. You have three documented options. Try PlusVibe if you want to compare it with Instantly and Smartlead.

Option 1: CSV upload to PlusVibe

Per PlusVibe's "Adding leads to a campaign" article:

1. Open Campaigns, click the three dots on a campaign and select Edit.
2. Go to the Leads tab and click Import Leads.
3. Choose CSV Upload.
4. Check the column mapping. Matching names map automatically; use Select Type to remap a column, skip it or create a custom variable.

PlusVibe's validation guide adds an optional Verify Leads toggle on the review step, which uses the enrichment credits in your PlusVibe plan.

Option 2: Zapier

Findymail's Zapier app has a New Contact trigger ("Triggers when a new email is found"). PlusVibe's Zapier app lists an Add Lead to Campaign action. Connecting the two gives you a no-code push: each new Findymail contact becomes a lead in the PlusVibe campaign you choose.

We did not build this zap, so check field mapping on a test campaign first, the same way you would test the native Instantly push.

Option 3: Both APIs

For a custom pipeline, call Findymail's API to find or verify emails, then send the results to PlusVibe's POST /api/v1/lead/add endpoint. Per PlusVibe's developer docs, that call uses an x-api-key header and requires workspace_id, campaign_id and a leads array (with fields such as email, first_name, company_name and custom_variables).

Our Findymail API guide covers the Findymail side, and our PlusVibe review covers the sending side.

Which route should you use?

Troubleshooting checklist

• [ ] Integration widget rejects the key: check Instantly plan, V1 vs V2 key, and that you copied the full key
• [ ] Contacts do not appear: confirm the campaign selected in Findymail and your Instantly uploaded contacts room
• [ ] Rows dropped on CSV upload: look for missing emails, duplicates in the file, or leads already in another campaign
• [ ] Variables blank in emails: map Findymail's columns to custom variables, or check which properties the push sent
• [ ] Bounces higher than expected: pause, pull catch-alls into their own campaign, and review the source list
• [ ] Findymail usage limit reached: wait for the rolling window to free up or move to a higher plan (nothing is charged at the limit, per Findymail)

Final take

The Findymail to Instantly workflow is short: find, decide on catch-alls, then push natively or upload a CSV. Smartlead is identical, and PlusVibe needs CSV, Zapier or the API because no native integration is listed.

For everything else Findymail does, from Intellimatch to the bounce guarantee, read the full Findymail review. To try the workflow on a small list, create a free Findymail account and push ten contacts into a test campaign, then compare Findymail's plans once you know your monthly volume.

Rather not build the list yourself?

Nerdy Joe is owned by Agency Growth Partners (AGP). AGP builds verified lead lists and runs outbound for agencies, from finding and verifying contacts to sequencing them in Instantly, Smartlead or PlusVibe. If you would rather hand it off, book a call with David.

Disclosure: My relationship with Instantly is that of an independent party. I do not hold any position, nor do I have the power to form binding agreements or act on behalf of Instantly. My earnings are derived from referral compensations provided by Instantly. The views I share are solely mine and should not be seen as official statements, promises, or representations of Instantly, or any related entities or personnel.

Sources

• Findymail Instantly integration: https://www.findymail.com/integrations/instantly/
• Findymail Smartlead integration: https://www.findymail.com/integrations/smartlead/
• Findymail integrations: https://www.findymail.com/integrations/
• Findymail help center, Setting up Instantly.ai: https://help.findymail.com/en/article/setting-up-instantlyai-hnknzl/
• Findymail help center, Setting up Smartlead.ai: https://help.findymail.com/en/article/setting-up-smartleadai-30sj7d/
• Findymail pricing: https://www.findymail.com/pricing/
• Findymail email finder: https://www.findymail.com/lp/email-finder/
• Findymail AI lead finder: https://www.findymail.com/ai-b2b-lead-finder/
• Findymail API docs: https://app.findymail.com/docs/
• Instantly help center, Findymail for LinkedIn scraping and enrichment: https://help.instantly.ai/en/articles/9244612-using-findymail-for-scrapping-the-leads-and-enrichment-from-linkedin
• Instantly help center, How to use Findymail to scrape leads from LinkedIn: https://help.instantly.ai/en/articles/6561733-how-to-use-findymail-to-scrape-the-leads-from-linkedin
• Instantly help center, How to Import Leads via CSV: https://help.instantly.ai/en/articles/6254215-how-to-import-leads-via-csv
• Instantly help center, Uploaded Contacts Limits: https://help.instantly.ai/en/articles/7918680-uploaded-contacts-limits
• Instantly help center, API V2: https://help.instantly.ai/en/articles/10432807-api-v2
• Instantly API docs: https://developer.instantly.ai/
• Smartlead, How To Create an Email Campaign: https://helpcenter.smartlead.ai/en/articles/442-how-to-create-an-email-campaign-in-smartlead-the-new-version
• Smartlead, How to Map CSV Columns: https://helpcenter.smartlead.ai/en/articles/409-how-to-map-csv-columns-in-smartlead-campaigns
• PlusVibe, Adding leads to a campaign: https://help.plusvibe.ai/en/articles/8624790-adding-leads-to-a-campaign
• PlusVibe, How to validate emails: https://help.plusvibe.ai/en/articles/11987497-how-to-validate-emails-in-plusvibe
• PlusVibe API, Add leads to a campaign: https://developer.plusvibe.ai/add-leads-to-a-campaign-17238007e0
• Zapier, Findymail integrations: https://zapier.com/apps/findymail/integrations
• Zapier, PlusVibe integrations: https://zapier.com/apps/plusvibeai/integrations