How to Clean and Verify Leads Scraped From Google Maps

To clean a Google Maps lead export, dedupe it by domain and phone number, drop listings whose websites no longer load, split generic addresses like info@ from named ones, verify every email, and format phone numbers to E.164 with a line-type check before calling or texting. Maps exports describe businesses, not people, so expect lots of generic inboxes and closed businesses.

What a Maps export usually contains

Most scrapers return the listing fields plus whatever they can find on the business website:

Field	Typical problems
Business name	Duplicates from multiple categories or locations
Website	Dead sites, parked domains, social pages instead of a site
Email (from website)	Generic inboxes, old addresses, web designer addresses, image-only emails missed
Phone	Local format, extensions, tracking numbers, landlines
Address and category	Usually fine; useful for segmenting

Step 1: Dedupe

Chains, franchises and listings in several categories create repeats.

1. Remove exact duplicate emails with the duplicate email remover.
2. Normalise phone numbers first, then dedupe them with the duplicate phone number remover. "(555) 010-1234" and "+15550101234" are the same number.
3. Decide how to treat multiple locations of one brand: one contact per domain is usually enough for cold email.

Step 2: Check the websites still work

An email scraped from a site that has gone offline is likely to be dead too. Run the website column through the bulk website status checker and remove or flag rows where the site does not load or the domain has expired.

If a listing has no website but has an email on a free provider like Gmail, it is often the owner's address. Keep it, but verify it.

Step 3: Split generic from named addresses

Address type	Example	What to do
Named person	jane@ or owner name at the domain	Best segment for cold email
Generic business inbox	info@, contact@, office@	Separate segment, lower volume
Free webmail	name@gmail.com	Often the owner on small businesses; verify
Clearly wrong	webmaster@ agency domain, example@	Remove

The role-based email filter splits generic addresses out in one step. Should you send to info@ and sales@ covers the trade-off.

Step 4: Verify every email

Scraped addresses bounce more than opted-in ones. Verify the whole list and sort:

• Valid: send.
• Catch-all: small local businesses on some hosting providers accept everything; send cautiously or skip.
• Invalid: remove.
• Unknown: re-check later.

How to verify scraped emails has more detail on why scraped lists need extra care.

Step 5: Clean the phone numbers

If you plan to call or text:

1. Format to E.164 with the phone number formatter, so +1 and country codes are consistent.
2. Check validity and line type with the bulk phone number validator. Business listing numbers are often landlines, which matters for SMS.
3. Respect calling and texting rules. For US calls, scrub against the Do Not Call registry where it applies and keep to allowed calling hours; for marketing texts, consent rules apply.

A format or line-type check tells you whether a number is correctly structured and what type of line it is registered as. It cannot tell you whether the number is currently in service or whether it can receive texts.

Step 6: Segment before sending

Maps data gives you strong segmenting fields: category, city, rating. Use them to write messages that fit:

• One campaign per category, so the message speaks to that kind of business.
• Named contacts first, generic inboxes second.
• Smaller daily volume for the generic segment.

Cold email to local service businesses and building a local business email list go further on targeting and messaging.

A quick checklist

• Dedupe emails and normalised phone numbers
• Remove listings with dead websites
• Split named, generic and free-webmail addresses
• Verify all emails; send valid first
• Format phones to E.164 and check line type
• Segment by category before writing the sequence

Keep a record of where each lead came from

Add columns for the search term, location and date of the scrape before you start cleaning. When bounces or replies come in, you can see which searches produce reachable businesses and which do not, and refine the next scrape instead of cleaning the same junk again.

Verify the export

Upload the cleaned export on the verify page; it accepts any email column and keeps the rest of your columns. You get 100 free email checks when you sign in with Google, no card.