Know exactly when they open your emails. Real-time tracking and read receipts for Gmail, Outlook, Yahoo and Zoho.
Users
15
+15 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#172K
#144K among extensions
Version
1.0.4
updated 13 Oct 2026
Users
monthly, 1 months
Latest, 21 Oct 2026:15 usersMove the mouse over the chart for any month
Ratings count
monthly, 1 months
Latest, 21 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Flyls - Email Tracking
Know exactly when your emails are opened.
Flyls adds an invisible tracking pixel to the emails you send from Gmail,
Outlook, Yahoo and Zoho Mail. When someone opens your message, you see it —
with the time, the device, and the country it was opened from.
No copying and pasting. No separate app to keep open. A small control appears
in your compose window, and you carry on writing.
WHAT YOU GET
• Open tracking — when your email was opened, and how many times
• Per-recipient detail — which of several recipients opened it
• Device and location — desktop or mobile, and the country of each open
• Link click tracking — every link in your message becomes a tracked link,
named after its own text, so your report reads "Join Now — 3 clicks"
rather than a list of URLs
• Manual mode — a pixel and tracked links you can paste into any email
client at all
• Dashboard — every tracked message in one place, filterable by date, with a
world map of where your readers are
SUPPORTED EMAIL PROVIDERS
Gmail, Outlook, Yahoo Mail and Zoho Mail work through the extension itself —
open a compose window and the controls are there.
Everything else — Apple Mail, Thunderbird, ProtonMail, your phone's mail app —
works through manual mode: generate the pixel, paste it into your message,
and tracking works the same way.
HOW IT WORKS
1. Install the extension and sign in.
2. Write your email as you normally would.
3. Flyls adds an invisible 1×1 image as you compose.
4. When the recipient's mail client loads that image, the open is recorded.
5. Your dashboard updates, and you can have a notification too.
PLANS
Personal Free — $0
Gmail and Outlook. 5 recipients per email. Emails you send carry a small
Flyls badge at the bottom.
Personal Plan Pro — $3.99/month
Adds Yahoo. Up to 20 recipients per email. No badge.
Business Plan Pro — $9.99/month
Adds Zoho. Unlimited recipients. Link click tracking. Manual mode for any
platform. API access and webhooks.
Annual billing is available on both paid plans. Cancel any time from the
dashboard; you keep the plan until the period you paid for ends.
WHAT THIS EXTENSION CAN SEE
It runs only on the mail sites listed in its permissions, and on flyls.com.
It has no access to any other page you visit.
On those mail sites it reads the recipients and the subject of a message you
are composing, so your dashboard can tell one tracked email from another, and
it inserts the tracking image. It does not read, transmit or store the body of
your emails.
WHAT IT DOES NOT DO
We would rather you knew the limits before installing than after.
Open tracking depends on the recipient's mail client loading images. Many
block them by default, and those opens will not be recorded until the reader
chooses to load them.
Most mail providers fetch images through their own proxy servers. That means
the location recorded is often the proxy's rather than the reader's, and a
provider that pre-fetches images can register an open that nobody performed.
Flyls reports what it can observe and does not guess. It is a useful signal.
It is not proof that someone read your message, and you should not treat it
as one.
PRIVACY
Your password is stored as a salted hash and cannot be recovered from it.
API keys and session credentials are stored hashed as well, so a copy of the
database is not a set of working credentials.
When an email is opened, the reader's IP address is used to work out an
approximate country and is then hashed with a secret salt. The address itself
is not stored.
Open and click records are kept for 12 months and then deleted automatically.
Deleting your account removes your tracked emails and their records with it.
Payment details go to Paddle, our merchant of record, and are never seen by
Flyls.
Full policy: https://flyls.com/privacy
Terms: https://flyls.com/terms
A NOTE ON TRACKING OTHER PEOPLE
Email tracking is regulated differently in different countries, and some
require the recipient's consent. You are responsible for knowing the rules
that apply where you and your recipients are, and for following them. Flyls
gives you the tool; using it lawfully is your part.
SUPPORT
support@flyls.co
https://flyls.com
https://mail.google.com/*https://outlook.live.com/*https://outlook.office.com/*https://outlook.office365.com/*https://outlook.cloud.microsoft/*https://mail.yahoo.com/*https://mail.zoho.com/*https://mail.zoho.eu/*https://mail.zoho.in/*https://mail.zoho.com.au/*and 1 more
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