Is Yesware Tracking Your Email? How to Block It

You open a sales email. Nothing happens — or so it seems. Within milliseconds, a server in Yesware's infrastructure logs your IP address, your device type, the exact time, and your approximate location. The sales rep gets a desktop popup. They know you read their email. You know nothing.

Yesware is one of the most widely deployed sales engagement tools in existence, with over one million users sending tracked emails through Gmail and Outlook every day. If you work anywhere near a B2B sales cycle, the odds are high that some of your inbox is being watched.

Key Takeaways

• Yesware embeds an invisible 1x1 tracking pixel at the end of every tracked email, firing silently when the recipient opens the message.
• Each pixel load sends the recipient's IP address, device type, email client, and open timestamp to Yesware's servers — without the recipient's knowledge or consent.
• Vendasta, a Canadian marketing technology company, acquired Yesware in October 2022, meaning recipient data now flows into a broader commercial platform.
• Click tracking rewrites every link in a Yesware email to route through Yesware's servers before redirecting — exposing your real IP address even if you have image loading disabled.
• Gblock blocks Yesware's tracking pixel before it fires, preventing open data from reaching Yesware's dashboard entirely.

What Is Yesware and Who Uses It?

Yesware is a sales engagement platform founded in Boston in 2010 that installs as a Chrome extension for Gmail or an add-in for Outlook. It gives sales professionals open receipts, link click notifications, attachment views, and meeting booking tracking — all wired into a real time activity dashboard. The company crossed one million installs before its 2022 acquisition, with customers including Groupon, Zendesk, and Acquia.

In October 2022, Vendasta — a Saskatoon based company that sells white label software to marketing agencies serving small and medium businesses — acquired Yesware. The deal's financial terms were not disclosed. What the acquisition means practically: Yesware's user base and the data it collects on email recipients now sits inside a broader commercial platform. That is worth knowing.

How Does the Yesware Tracking Pixel Work?

The Yesware tracking pixel is a transparent 1x1 GIF image placed at the very end of the HTML email body. When your email client renders the message and loads images, it fetches that GIF from Yesware's servers. That fetch request carries your IP address, the timestamp, your device type, and your email client — all standard HTTP metadata that your client sends automatically.

Yesware's server logs that request and pushes a notification to the sender's dashboard. According to Yesware's own support documentation, the pixel fires on every open, giving the sender a full read timeline across multiple devices.

Two partial mitigations are worth understanding: Gmail's image proxy routes image requests through Google's servers, masking your IP for open tracking — Yesware sees Google's IP, not yours. Apple Mail Privacy Protection prefetches all email images before display, which generates a false open (Yesware logs a read even if the recipient never opened the email). Neither of these fully protects you, since click tracking does not go through Gmail's proxy.

What Data Does Yesware Collect From Recipients?

When the pixel fires, Yesware captures:

• IP address — used to infer your city and region
• Timestamp — exact date and time of each open
• Device type — phone, tablet, or desktop
• Email client — Gmail web, iOS Mail, Outlook, and so on

This is not aggregate, anonymized data. It is a timestamped record tied to your specific email address and the sender's account. A sales rep using Yesware can see that you opened their email at 9:04 AM from a mobile device in Chicago, then opened it again at 2:17 PM from a laptop in the same city. That behavioral signal changes how they follow up with you.

Does Disabling Images Stop Yesware Tracking?

Disabling images in your email client blocks open tracking via the pixel — but it does not stop click tracking.

Every link in a Yesware tracked email is rewritten before the message is sent. Instead of pointing directly to the destination, the link routes through a Yesware redirect URL first. When you click, your browser hits Yesware's server, which logs your IP, device, timestamp, and which link you clicked, then forwards you to the destination. Gmail's image proxy does nothing here. Your real IP address goes straight to Yesware's server on every click.

According to Yesware's feature documentation, the platform tracks opens, link clicks, attachment views, and meeting bookings as four separate data streams. Disabling images only addresses one of these four.

How Can You Spot a Yesware Tracked Email?

You can spot it with some effort. In Gmail, open the original message source (three dot menu → "Show original") and search for yesware in the HTML. Tracked links typically contain a Yesware redirect domain in the href, and the pixel is a 1x1 image tag appended after all visible content.

Most recipients never do this. The pixel is invisible by design and appended after the visible content, so there is nothing to notice while reading. For a broader method that works across multiple tracking tools, see how to tell if your email is being tracked.

Why Email Users Should Care

Yesware's tracking gives a sales professional a live window into your behavior. When you read emails, on what device, from what city — these signals flow into CRM systems and inform follow up timing and strategy. You are being studied without consent, and you have no way to opt out within Yesware's interface because it is the sender's tool, not yours.

The Vendasta acquisition adds another layer. Your open data no longer stays within a focused sales tool. It flows into a platform that also serves advertising agencies and small business marketing — a commercial infrastructure with a much broader reach than Yesware's original use case.

For context, a Princeton and eBay study on email tracking found tracking pixels in roughly 70% of commercial emails — Yesware-style tools account for a large share of B2B email surveillance specifically.

How to Block Yesware Tracking

There are three approaches, ranging from partial to complete:

1. Plain text mode (nuclear option). Setting your email client to read all emails in plain text strips all HTML, including tracking pixels. Effective, but it makes every email harder to read and breaks formatted content you may actually want.

2. Disable image loading. Blocks open tracking pixels but not click tracking. In Gmail settings, go to General → Images → "Ask before displaying external images." This is better than nothing, but leaves click tracking fully intact.

3. Gblock. Gblock is a Gmail extension that automatically detects and blocks tracking pixels — including Yesware's — before they fire. You keep images enabled for legitimate senders and newsletters while the tracking signals never reach Yesware's servers. Unlike disabling images globally, Gblock is surgical: it targets tracking infrastructure specifically, not all images. It also handles HubSpot tracking, Mixmax, and dozens of other sales tools with the same single extension.

For a full comparison of blocking tools, see the best email tracker blocker extensions guide.

Sources: Yesware tracking documentation | Vendasta acquires Yesware announcement | Princeton/eBay email tracking study.