Free Email Resources: Tools and Guides

Free tools

Getting started with email tracking

• How to Install an Email Tracker in Chrome (and Check It Works)Installing an email tracker Chrome extension takes two minutes. Here are the steps, how to send your first tracked email, and how to check the tracking really works.
• How to Know If an Email You Sent Was OpenedRead receipts, open tracking and Chrome extensions: what each method is really worth, and why Zoho Mail has far fewer options than Gmail.
• How to Track Email Opens in GmailNo read receipt on a personal Gmail account. Here is how trackers actually work, what Gmail's image proxy changes, and what to compare.
• Email Tracking in Outlook Web: What Works and What Does NotOutlook has had read receipts for thirty years, so why would anyone want tracking on top? Because they answer different questions, and one of them depends entirely on the recipient's goodwill.
• How to Track Email Opens in Zoho MailZoho ships read receipts the recipient can decline. Open tracking works differently, and the Zoho ecosystem is far emptier than Gmail's.
• How to Test Email Tracking Without Fooling YourselfThe most common support message we get is a test email that shows Not opened. The tracking worked. The test was the problem.

Reading opens and clicks

• How an Email Tracking Pixel Actually WorksAn image request with an identifier attached. Everything a tracker claims to know comes from that single event.
• How Accurate Is Email Open Tracking, Really?Every tracker shows a number. Almost none says how wrong it can be. We build one and we have measured it, including the mistake we made and had to undo.
• Why Your Email Shows 12 OpensNobody reads a two-paragraph message twelve times. So either the tool is broken, or the number counts something other than readings. It is the second one.
• Why Your Email Tracking Shows No OpensFive reasons your tracker reports nothing, and only one of them is about the recipient's interest.
• Open Tracking vs Link Tracking: Which Signal to TrustAn open says a message was displayed. A click says someone decided. Not two versions of the same measurement.
• Why a Link Shows as Clicked Seconds After You SendYou send a proposal and, before you have closed the tab, every link in it shows as clicked. Nobody reads that fast. A security system did.
• Email Tracking and Apple Mail Privacy ProtectionA meaningful share of the opens in your dashboard were never made by a human. The biggest distortion in modern tracking.
• Your Own Opens Are Polluting Your DataReread a message in your Sent folder and most trackers count it as the recipient opening it. It inflates the count and, worse, it destroys the first-open time.

Following up

• When Should You Follow Up After an Email Is Opened?An open is a window, and windows close. Practical intervals for quotes, cold contacts and threads that went quiet.
• Follow-Up Email Templates for When There Is No ReplyFour short follow-up templates, each matched to what actually happened to your email: never opened, opened once, opened many times, or clicked.
• How Many Follow-Ups Before You StopThree is the number everyone repeats and nobody can justify. The honest answer depends on one thing you can actually measure: whether they opened the first one.
• What to Do When a Prospect Goes SilentThe call went well, you sent the proposal, then eleven days of nothing. Silence is three different situations wearing the same clothes, and they need opposite responses.
• Opened, Clicked, Silent: Reading the Signals After a ProposalSilence after a proposal means nothing on its own. Silence after six opens and three visits to your pricing page means something quite specific.
• How to Write Subject Lines That Get One-to-One Emails OpenedMarketing subject line advice does not fit a proposal sent to one person. What works for one-to-one business email, with examples you can measure.
• A Simple Follow-Up System in GmailLabels, snooze and open tracking: a follow-up system that lives entirely in Gmail, takes ten minutes a day, and never lets a proposal slip.

Deliverability and list hygiene

• How to Verify an Email Address Before You SendA typo or a dead address costs more than a bounce: it hurts your sender reputation. Here is how verification works, step by step, and what each result means.
• Why Emails Bounce, and What It Costs YouA bounce is not just an email that did not arrive. It is a mark against your ability to reach everyone else.
• The Difference Between a Bounce and a BlockBoth mean the message did not land. One is the address, the other is you. Confusing them is how a sender damages a domain while fixing nothing.
• Catch-All Domains: Why Verification Sometimes Says MaybeA server that accepts every address, including the ones that do not exist. The reason verification sometimes says maybe.
• How to Clean an Email List Before a CampaignDeduplicate, filter, verify, segment, then write the results back to the source. The order that works.
• How to Tell If Your Email Went to SpamNobody replied. Ignored, or filed in a folder nobody reads? You cannot see the answer directly, but you can eliminate it, and a five minute check does most of the work.
• Why Your Emails Land in Gmail's Promotions TabA one-to-one email in the Promotions tab is rarely read in time. What pushes it there, and what keeps business emails in the Primary inbox.
• Does Email Tracking Hurt Deliverability?A tracking pixel is a remote image, and so is most marketing email. The worry is fair. The answer depends almost entirely on whether you write to one person or to ten thousand.

Privacy and compliance

• Is Email Tracking Legal Under the GDPR?It can be lawful, and the responsibility is yours rather than your tool's. What legitimate interest actually requires.
• Email Tracking and US Privacy Laws: What to KnowThere is no single US privacy law, but a growing set of state laws. What they mean for one-to-one email tracking, and the habits that keep you on the right side.
• Should You Tell People You Track Your Emails?The legal question depends on your country. The social one is harder and nobody writes about it. Three honest positions, one failure mode, and the test that never fails.
• Is an Email Tracking Chrome Extension Safe? Permissions ExplainedBefore installing an email tracking Chrome extension, check what it can access. The permissions to look for, the red flags, and exactly what mailcheck asks for.
• What Mailcheck Stores, and What It Never SeesYou are about to give a browser extension access to your inbox. Here is the complete list of what mailcheck keeps, what it never touches, and how to verify the same about any other tracker in four minutes.
• How to Turn Off Email Tracking, and When You ShouldHow to stop tracking what you send, how to stop being tracked in what you receive, and when you should do both.

Help with mailcheck

• Help and support: one address, answered by the person who builds the product.
• Status: whether every part of mailcheck is up right now.
• Changelog: what changed, release by release.
• Claude connector: what the AI connector can read, and how to add it.
• Blog: every guide, newest first.