Email links can register clicks before anyone reads the message because automated services inspect URLs. A recorded redirect request is evidence that the address was requested; it does not, by itself, prove that the recipient chose it. Mailchimp explicitly documents spam filters following incoming links before delivery. Start with its click-tracking troubleshooting guide when a campaign shows an immediate burst.
This guide is about link requests, bot filtering and campaign interpretation. Our separate email-open tracking guide covers tracking pixels and image loading. Moving from opens to clicks gives you another signal, but clicks still need context.
What can request an email link?
Security scanning. Microsoft Defender for Office 365 documents URL scanning during mail flow and checks when a user follows a link. Policies and clients affect the behavior. A Safe Links wrapper therefore tells you that protection is involved; it does not tell you that a particular analytics event was automated. See the current Microsoft Safe Links overview.
Link previews and other automated tools. A service may fetch a URL to inspect it or create a preview. Mailchimp lists link-preview generators among the sources of non-human campaign activity and describes its filtering as identifying most bot activity. Treat a filtered total as an estimate shaped by the filter, not a certification that every remaining event is human. Mailchimp explains bot activity and filtering.
Real people, more than once. A reader can return to the same link, open it on another device or share it. A request count cannot distinguish those situations on its own. Mailchimp also warns that ordinary forwarding can associate the forwarded reader's clicks with the original contact's tracking URL. Its troubleshooting guide explains the forwarding limitation.
Several redirect services may sit between the email and your page. For example, an email provider's tracking URL may lead to your short link, which then leads to the website. Each system sees its own part of the journey and may apply different filters. A mismatch between reports is a reason to inspect their definitions before deciding one is broken.
Read the pattern without guessing the person
Use these as investigation prompts. None of the patterns alone identifies a scanner, a person or a particular security product.
| What you observe | Possible explanation | Useful next check |
|---|---|---|
| Clicks arrive immediately after sending | Automated inspection, sender validation or a quick reader. | Compare with a controlled inbox that nobody has opened yet. |
| Several links are requested close together | A scan, a preview workflow or someone exploring the email. | Compare timing across different test links and deliberate clicks. |
| The short-link report exceeds the email report | Different filters, repeated requests or traffic observed at different redirect steps. | Align time zones, date ranges and bot settings; inspect the actual delivered URL. |
| Clicks rise while landing-page activity stays flat | Automated requests, a broken destination or site measurement that did not run. | Open the complete delivered link and verify both the page and its measurement setup. |
| One contact appears to click repeatedly | Return visits, forwarding or automation. | Compare campaign-level downstream outcomes before triggering individual follow-up. |
One concrete source of mismatched counts is sender-side validation: Mailchimp says its abuse-prevention checks can reach an outside tracker before Mailchimp applies its own click tracking. That does not establish the cause of every discrepancy, but it explains why the two totals need not match. See Mailchimp's explanation of higher external counts.
Run a controlled test with your own inboxes
The following is a proposed diagnostic workflow, not a benchmark or a claim that we tested your email provider. Its purpose is to separate traffic that happens before your action from traffic around a known action.
- Choose a harmless destination. Use a public page you control with a clear test label. Do not use a password-reset link, payment action, unsubscribe link or one-time invitation. Keep account changes and real purchases out of the experiment.
- Create two fresh test links. Point both at the same page and label them A and B in your record. Keep them out of chat apps, public posts and link-checking tools during the observation period; those would introduce extra requests.
- Send only to test inboxes you control. Use the normal delivery path you want to investigate. Provider test-send modes can report differently: Mailchimp says campaign reports track clicks from sent campaigns rather than test versions. For that provider, use a tightly limited campaign addressed only to your consenting test contacts. Check its test-send limitation.
- Record an untouched interval. Note send time and time zone. For a chosen interval, such as ten minutes, do not open the message or activate a preview. Record any link events. Ten minutes is an observation window, not a guarantee that all scanners finish within it.
- Make one documented action. Open the message, click A once and record the exact time, client and final destination. Leave B untouched. If your site measures visits, check whether your known visit appears after the normal reporting delay.
- Compare the evidence. Record pre-action events, events near your deliberate click and later events separately. If possible, repeat with a fresh pair of links and a different inbox provider. Keep security protections enabled throughout.
A request during the untouched interval suggests background activity somewhere along that test path. It does not identify the responsible vendor. Conversely, no early requests in one test does not prove future traffic will be free of automation. Save the timestamps, delivered URLs and filter settings so another person can repeat the investigation.
Report clicks alongside a meaningful outcome
Pick the decision the campaign is supposed to support. For an event invitation, a completed registration is more useful than a request to the registration link; the event registration guide applies that distinction to event promotion. For a product announcement, a confirmed trial activation answers a different question from a visit to the product page.
- Email report: state whether the metric counts total events or unique contacts and whether known bots are excluded.
- Link report: use it to compare entrances and diagnose request patterns; keep the time window and filter settings with the result.
- Website or product report: compare landing-page activity with the intended outcome, while checking the measurement setup and attribution window.
For example, report “newsletter link requests increased; completed registrations stayed flat” instead of “more people became interested.” That statement preserves what you actually measured. A registration can still need validation against spam or duplicates, so define a confirmed outcome before comparing campaigns.
Campaign tags help group downstream activity. Give each placement a consistent campaign and content label; do not put email addresses or private tokens in public campaign parameters. Our Google Analytics URL builder guide covers the tagging workflow. Tags describe a source; they do not establish who clicked.
How to interpret bot filtering in 302.sh
302.sh marks known or suspected bot events using available Cloudflare bot signals and user-agent heuristics. Link analytics exclude flagged bots by default and let you include them for comparison. Those signals have limits: an unflagged request is not proof of a human reader, and a short-link report does not establish a purchase or registration at the destination.
When investigating an email send, compare the same link and date range with bots hidden and included. Also check your plan's retention window and analytics allowance before interpreting missing events. Avoid comparing an all-traffic total from one tool with a filtered total from another. For rate calculations, define the numerator and denominator explicitly; the CTR guide explains why the comparison context matters.
Watch how Safe Links checks a URL
Microsoft Security's Protect against malicious links with Safe Links in Microsoft Defender for Office 365 explains checks at the time a link is followed. It is useful background on why a security service sits in the path. The video was published in 2021; use the current Microsoft documentation for present-day settings. The video does not identify the source of your campaign's clicks.
Common questions about email bot clicks
Does a click prove someone opened the email?
No. Automated services can request links without a deliberate read. Open tracking and click tracking measure different events, and neither alone proves attention.
Can I remove every automated click?
Do not assume that any filter is complete. Keep filter settings consistent across comparisons, investigate anomalies with a controlled test and use meaningful downstream outcomes for decisions.
Should I disable email security to improve analytics?
Keep protection enabled. Diagnose measurement with test links, reporting settings and destination checks. Changing security policy to make a campaign graph look cleaner is not a useful measurement fix.
What is included in 302.sh?
Free allows 5 new links per UTC month and up to 50 owned links, with 5 custom slugs per month of at least 6 characters. Deleting a link does not refund its monthly creation allowance.
Free includes 2,000 analytics events per month and 90-day retention. Reaching that analytics allowance stops additional tracking, not redirects. Link deletion, owner-set limits and safety enforcement can still stop redirects. Branded domains require a paid plan and completed domain setup. See current plans and limits.
Try the workflow
Explore the dashboard demo, or create a short link using a destination you own or are authorized to share. Verify the destination before distributing it.