Mailsumo
400,000 people already use Mailsumo

Extracts, finds and
tracks emails from your browser

Mailsumo is a suite of email tools that lives in your browser. Find anyone's work email without leaving their profile, pull every address off a page in one click, and know the moment someone opens your email.

4.7 rating 3,700 reviews +1,000 installs per day
01 · Email Extractor

Hours of manual research,
done in one click

A member directory, a conference attendee list, a page of search results. One click pulls every address on the page. Paste in up to 1,000 URLs and it works through the whole lot while you get on with something else.

  • Works on any site, with nothing to configure
  • Queue up to 1,000 URLs and walk away
  • Never collect the same person twice
  • Export to CSV, or keep lists in the cloud
47 emails found on this page
[email protected]Atelier Mora
[email protected]Sixth Avenue
[email protected]Varsity Health
[email protected]Nordwind
plus 43 more
Export 47 to CSV
02 · Email Finder

Find anyone's email address,
anywhere online

Open a LinkedIn profile, a company page or a directory listing and get the work email behind it. No guessing at patterns, no test sends to see which one bounces. Every result comes back with a confidence score.

  • One click from the profile you are already reading
  • Only have a name and a company? That is enough
  • See how sure we are before you spend a credit
  • Drop in a CSV and find hundreds at once
Email found
Marie Leroy
Marie Leroy
Head of growth at Brightwave
Confidence score
96%
Save to list
Copy
03 · Email Tracker

Follow up at the moment they are reading

Connect your Google account and Mailsumo shows you when the emails you send from Gmail are opened and which links get clicked, and it never reads the contents of your messages. Most follow-ups are sent on a guess; when you know someone just opened your email for the third time, you know exactly who to call and when.

  • Connect your Google account in one click, no password to share
  • Know the second an email you sent from Gmail is opened
  • Find out which links actually got clicked
  • Lives inside Gmail; we store open events, never your email content
Sent · Gmail
Priya Anand
Proposal for Q3 partnership
9:41 AM
Opened
Marcus Lee
Re: Contract redlines
Yesterday
Opened
Dana Whitfield
Intro: design systems
Mon
OpenedSent
Loved by 400,000 users

People who prospect all day, every day

Rated 4.7 out of 5 across more than 3,700 reviews on the Chrome Web Store.

Collects addresses from any site without hassle. Fast, accurate, and simple enough for a beginner.
Danish M.
Danish M.
Lead generation specialist
We used to spend hours copying contacts by hand. Now one click pulls every email off the page.
Sarah Whitfield
Sarah Whitfield
Sales development rep
I paste a list of company pages, grab a coffee, and come back to a clean CSV.
Marco Bianchi
Marco Bianchi
Technical recruiter
Exporting straight to CSV keeps our outreach tools in sync. It pays for itself every week.
Aisha Rahman
Aisha Rahman
Founder, outreach agency
It works on every site, and saving each address with its source keeps our pipeline organised.
James Carter
James Carter
Marketing manager
I install it on every new machine and I am productive in seconds. It does what it promises.
Priya Nair
Priya Nair
Growth consultant
Read all reviews on the Chrome Web Store
Mailsumo API

Everything, also over the API

Find and verify addresses from your own code, and pull your leads and tracking data into the tools you already run. One REST API, one key, and the same credits as the apps. Included with every paid plan, at no extra cost.

Explore the API Read the docs → 
GET /v1/finder/find
  ?domain=brightwave.io
  &full_name=Marie+Leroy

→ [email protected]  96%

Find your first email in two minutes

Install one extension, keep the free plan as long as you like, and upgrade the day it starts paying for itself. Connect your Google account to track the emails you send from Gmail, and we never read your message content.

Add to Chrome for free