Is PlotStack — Newsletter Analytics safe to install?

What data it declares

The developer declares that it collects these kinds of data:

• Website content such as text, images or links on the pages you open

The developer also certifies that your data is not sold to third parties outside approved uses, not used for purposes unrelated to the extension's core function, and not used to decide creditworthiness or lending.

The listing links to a privacy policy.

This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

What Chrome asks you to allow

When you add it, Chrome asks you to allow it to:

• Read and change your data on substack.com and all substack.com sites
• Read your browsing history
• Manage your downloads
• Modify data you copy and paste

Derived from the manifest by Chrome's documented rules; the dialog's exact wording depends on your Chrome version and language. Chrome asks again if an update requests more.

What it can reach

Specific sites only: 2 match patterns.

• https://substack.com/* only substack.com
• https://*.substack.com/* substack.com and all its subdomains

Reaches your browsing data or every site

• Read and change cookies on the sites it can access cookies
• See the address and title of every tab you have open tabs

Worth knowing

• Manage your downloads downloads

Routine for an extension

• Schedule work to run later alarms
• Put data on your clipboard clipboardWrite
• Store data in your browser storage

How usual this is for its category

In Productivity · Workflow, 19% of extensions ask for access to every site. This one: Access to specific sites only.

The typical extension there declares 3 browser permissions; this one declares 6 browser permissions.

• Read and change cookies on the sites it can access (cookies): 6% of extensions in this category ask for it.
• See the address and title of every tab you have open (tabs): 33% of extensions in this category ask for it.

Counted over the live extensions of the same category after our latest full pass of the store. A share is context, not a verdict: what is normal depends on what the extension is for.

Who uses it and how it is kept up

19 users

• Last updated in the store 20 days ago, on 2026-10-24.
• We have seen 6 new versions in the last 90 days.

What the store shows

• Trader The publisher has declared itself a trader under EU rules.

Has it asked for more over time?

This is the question a permission list on its own cannot answer. An extension that shipped narrow and widened later is a different proposition from one that always asked for the same thing.

1. 2026-09-05Asked for more permissions (8, was 7)

Versions we have seen

1. 2026-10-24Version 1.6.0
2. 2026-10-13Version 1.5.0
3. 2026-10-01Version 1.4.0
4. 2026-09-28Version 1.3.0
5. 2026-09-26Version 1.2.1
6. 2026-09-24Version 1.2.0

Who publishes it

soto.platero, who publishes 3 listings we track. This listing has been in the store since 2026-09-04 and was last updated on 2026-10-24.

Similar extensions that ask for less

Listings close to this one in what they say they do, which declare less reach. Less reach is not a verdict on either: compare what each needs for the job.

1. Substack Enhanced Stats Access to specific sites only · 1 permission, 2 site patterns 40 users ★ 5.0
2. Stackwise Access to specific sites only · 2 permissions, 1 site pattern 6 users
3. StackAds - Substack Metrics Sync Access to specific sites only · 3 permissions, 2 site patterns 3 users

How to check or remove it in Chrome

1. Type chrome://extensions in the address bar and find the extension in the list.
2. Open its details. The site access setting shows where it can run; set it to run only on click and it reaches a page only after you press its icon.
3. To uninstall it, choose Remove on the same page.

Questions people ask

What can PlotStack — Newsletter Analytics access?

Specific sites only: 2 match patterns. It declares 6 browser permissions.

What data does PlotStack — Newsletter Analytics collect?

The developer declares that it collects these kinds of data: Website content. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

Has PlotStack — Newsletter Analytics asked for more permissions over time?

Its permissions changed once while we watched, on 2026-09-05.

Does PlotStack — Newsletter Analytics publish a privacy policy?

Yes, the store listing links to a privacy policy.