eM Client Read Receipts: Does eM Client Track You?

An eM Client read receipt is a polite request, not a spy pixel. When someone emails you from eM Client, the app can ask your mail program to confirm that you read the message, and you get to say no. Unlike Mailbird or Spark, eM Client sells no hidden open tracking at all. When a former Mailbird user asked for it this summer, an eM Client team member answered on the company forum that "Email tracking without opt-in permission is an illegal practice, at least in the EU with its GDPR law" and "we do not plan to add this feature." That makes eM Client the rare email client in our series that blocks trackers and refuses to plant them.

Key Takeaways

• eM Client offers senders only standard read and delivery receipts, and a staff member said on August 11, 2026 that the company does "not plan to add" pixel tracking.
• Gmail ignores read receipt requests on personal @gmail.com accounts, so an eM Client receipt request cannot report back from a personal Gmail inbox.
• eM Client 9, released in February 2022, added tracking pixel detection, and only paid licenses can load a message's images while keeping the pixel blocked.
• eM Client's privacy policy, last updated September 22, 2026, says its AI features run on Microsoft Azure OpenAI and process "any prompts you submit or receive through the Application."
• DNS checks on September 30, 2026 found no tracking hostname under emclient.com, and the domain has no wildcard record.

Does eM Client Track Your Emails?

No, not with a hidden pixel. eM Client, made by eM Client s.r.o. of Prague according to its privacy policy, gives senders two tools: a delivery receipt and a read receipt. Both are decades old email standards, and both depend on the recipient's side cooperating. We found no eM Client feature or paid tier that plants an invisible image in outgoing mail.

The company has said so more than once. In August 2017, eM Client support told a user who wanted Mixmax style tracking that "we prefer to keep the security and privacy of our customers on high level so we do not offer features such as Link tracking or FW tracking," per the forum thread. The same request came back in November 2023 and again in August 2026, both times from people switching away from Mailbird. The 2026 poster explained what they missed: "I previously used Mailbird, where you could add a tracking pixel to an email with just one click."

That contrast is the story. Our look at Mailbird email tracking found a desktop client that sells unlimited pixel tracking to Premium users. eM Client competes for the same Windows and Mac buyers and turned down the same feature, citing GDPR, as recently as seven weeks ago. The closest thing it offers is Watch for Reply, a paid reminder that tells the sender if you have not replied after a set time. It watches the sender's own inbox for your answer, not your screen.

How Do eM Client Read Receipts Work?

An eM Client read receipt is a line in the email header that asks your mail app to send back a confirmation. Senders request one from the circle with three dots on the right side of the compose window, per eM Client's receipts page, or turn it on for every message by ticking "Request a read receipt for all sent messages" under Menu, Settings, Mail, Receipts, according to the eM Client documentation.

Under the hood, this is a Message Disposition Notification. Headers that users have posted from their own eM Client messages on the eM Client forum show two telltale lines:

• Disposition-Notification-To: the address where the receipt should go. It appears only when the sender asked for one.
• User-Agent: eM_Client/10.1.4588.0 (or another version number): the app that wrote the message.

The standard behind it, RFC 8098 from the IETF, puts the recipient in charge. It says "it is strongly recommended that the user agent obtain the user's consent before sending an MDN" and that "it is acceptable for the MUA to silently ignore requests for MDNs." The same document warns that a receipt can reveal "when the message was read, using which email client, and which OS was used." That is the most an eM Client sender can get, and only if your side agrees.

eM Client's own documentation adds a caveat: "there is no way for you to tell whether your read receipt was denied, ignored, or the message was not read." A missing receipt proves nothing.

What Happens When an eM Client User Emails Your Gmail?

If you use a personal Gmail account, nothing goes back. Google's help page on requesting or returning a read receipt is blunt: "Read receipts are only available to work or school accounts. They don't work with personal Gmail (@gmail.com) accounts." An eM Client sender can tick every receipt box and still learn nothing from your @gmail.com inbox.

Work and school accounts are different, and your employer decides. In the Google Workspace admin console, an administrator can switch receipts off or limit them to internal and allowlisted addresses, then decide whether you get a prompt. If the "Prompt the user for each read receipt request" box is unchecked, "read receipts are sent back to the sender automatically when the recipient opens each message." When you are asked, Gmail shows Send receipts and Not now buttons. Google's user page also notes: "If someone requests a read receipt, but you don't see a message, your receipt was sent automatically."

This is why the answer to "does eM Client track emails" depends less on eM Client than on whatever else is in the message. A newsletter or sales email that happens to be sent from eM Client can still carry a tracking pixel from a marketing tool, and eM Client will not strip it on the way out. Our explainer on how Gmail read receipts work covers how the pixel kind differs from the receipt kind.

To check what a specific message asked for, open it in Gmail, click the three dot menu, choose Show original, and search for Disposition-Notification-To and User-Agent. If the first line is there, the sender requested a receipt. If you see an image address you do not recognize in the HTML, that is a separate tracker, and eM Client did not add it.

We Checked for an eM Client Tracking Server

We found no tracking host. A pixel service needs a server to log each open, so we looked for one. Public certificate transparency logs list 148 distinct names under emclient.com, covering licensing, push notifications, translation, sync, the forum and test servers. None is named for tracking, pixels or opens.

DNS agreed on September 30, 2026:

• track.emclient.com, tracking.emclient.com, pixel.emclient.com, t.emclient.com and open.emclient.com all returned NXDOMAIN.
• A nonsense control name we made up also returned NXDOMAIN, so the domain has no wildcard record that could hide a tracker behind any subdomain.
• Known names from the logs, such as sync.emclient.com and ai.emclient.com, did resolve, to the same Cloudflare addresses as the main website.

Absence of a hostname is not proof on its own, but it lines up with every official statement we found. We did not send a message from eM Client and inspect it, so this is a check of public records, not a packet capture.

How Does eM Client Block Trackers in Your Inbox?

eM Client blocks all external images by default and flags messages that carry a known tracking pixel. Its external content guide explains why: tracking pixels "are able to show your actual IP address every time you open the message." eM Client 9, which the release history dates to February 2022, added "Anti Mail Tracking (Pro)."

What you get depends on your license, per eM Client's pixel detection post:

• Free: a target icon in the message list marks tracked mail, but you can only "block all external content (including the tracking pixel), or manually select 'download pictures' which will download everything – including the tracking pixel."
• Paid (Personal or Business): an information bar reads "Allow email tracking. Email tracking was blocked to preserve privacy," and you can load the real images while the pixel stays blocked. The pricing page lists "Blocking of Tracking pixel" among features missing from Free, with Personal at 39,95 € a year or 59,95 € once.

Paid users choose a default under Menu, Settings, Mail, Privacy. The email tracking guide lists "Always ask," which is the default, "Always block detected email tracking content," and "Always allow detected email tracking content." A separate external content option, "Display content when email tracking is detected," loads everything except the parts flagged as trackers.

Three limits matter:

• Detection is list based. eM Client warns that "a sender uses a new tracking service that eM Client doesn't recognize yet" can slip through.
• No documented image proxy. We found no eM Client page describing one, so images you choose to load appear to come straight from your own IP address.
• No documented link cleaning. eM Client's tracking guide itself says "Clicking a link or an external attachment can also activate different tracking codes," but we found no feature that rewrites tracked links. Our guide to blocking click tracking in Gmail explains that half of the problem.

Does eM Client Send Your Email Content Anywhere?

Only when you use certain optional features. The privacy policy, last updated September 22, 2026, says that "with the sole exception specified below the Company never retrieves and has no access to the content of your emails." The exception is push notifications in the mobile app, which need your login details plus the subject and sender address of each new message. Other features send data out when you trigger them:

• AI: eM Client 10 brought "Generative AI integration" in July 2024, and the eM Client 11 beta that began on August 19, 2026 adds AI Summarize, an AI Assistant and MCP support. The policy says "The Application integrates the Microsoft Azure OpenAI feature" and eM Client "will process any prompts you submit or receive through the Application." Its AI page promises "eM Client never sends text or queries to the server without explicit user action," yet still names ChatGPT as the provider, which no longer matches the policy.
• Translation: the automatic translation of incoming messages sends text "to the translation service running on our servers," which keeps technical details such as "the selected language pair, and IP address" but not the text itself.
• eM Sync: the new optional sync service stores settings and signatures with "zero-knowledge end-to-end encryption" on Microsoft Azure.

If you email someone who uses eM Client and they click an AI button on your message, your words can pass through Microsoft's AI service. That is their choice, not something you can block from Gmail. eM Client users can switch every AI button off under Menu, Settings, Mail, Artificial Intelligence.

eM Client vs Gmail, PixelBlock, Trocker and Gblock

eM Client protects you only when you read mail inside eM Client. If you read Gmail in Chrome, these are the realistic options, checked on September 30, 2026:

• eM Client (desktop app): blocks external content by default and flags known pixels. Limits: pixel only blocking needs a paid license, detection is list based, and no link cleaning is documented.
• Gmail's image proxy: on for everyone. Google's image settings page says "Senders can't use image loading to get information about your computer or location," but also that "Sometimes, senders may know whether you've opened an email that has an image." It hides your IP address, not the open.
• PixelBlock: a Chrome extension for Gmail with 40,000 users that shows a red eye when it blocks a tracker. Its store listing was last updated December 2, 2025.
• Trocker: an open source extension with extra detection in Gmail, Yahoo and Outlook.com, 10,000 Chrome users, and version 3.4.1 from July 10, 2026.
• Ugly Email: its Chrome Web Store listing no longer loads, so new Chrome users cannot install it.
• Gblock: a browser extension that blocks tracking pixels and strips tracked links inside Gmail on the web, using a blocklist that updates on its own. It also flags unknown images of 150 bytes or less, and custom filters let you add any host. Limits: desktop browsers only, not the Gmail mobile app or a desktop client like eM Client.

None of these tools touch read receipts, because receipts are not images. Receipts are handled by your mail provider. For a deeper head to head, see our Ugly Email vs PixelBlock vs Trocker comparison and How to Block Email Tracking in Gmail.

How to Block eM Client Read Receipts and Tracking

Pick the steps that match where you read mail:

• In eM Client: go to Menu, Settings, Mail, Receipts (eM Client, Preferences, Mail, Receipts on Mac) and set Returning Read Receipts to "Never send a read receipt." The documentation also offers a per message prompt and "always send."
• In eM Client, for pixels: under Menu, Settings, Mail, Privacy, keep "Block external content" selected. On a paid license, set Email Tracking to "Always block detected email tracking content."
• In personal Gmail: receipts are already ignored. For pixels, open Settings, See all settings, Images, choose "Ask before displaying external images," and save.
• In Workspace Gmail: click Not now when a receipt prompt appears, and ask your admin whether receipts go out automatically.
• In Gmail on a desktop browser: add a pixel blocker so ordinary images keep loading while trackers from other tools in the same message do not.

The Quick Answer

eM Client does not track you with pixels. An eM Client read receipt is a standard request your mail app can refuse, personal Gmail ignores it completely, and eM Client's own team said in August 2026 that hidden tracking is not coming. The tracking you should worry about in an eM Client email is the same kind you face everywhere else: marketing pixels and tracked links added by other tools, which eM Client does not remove before sending.