Constant ContactOpen-tracking pixel, click tracking and unsubscribe
Marketing généraliste · vendor's site ↗ · code constant-contact
Long-established American sending platform, aimed at very small businesses and nonprofits, with phone support included in the offering. The product favors ease of use over fine-grained configuration.
Postmetry reference sheet
What the vendor says, checked by us
1 source · last reviewed on 09/11/2026. Still not checked: Open pixel, Click tracking, Exclusion by campaign, Exclusion by contact, Consent — absence means no pixel, Native consent collection, Tracking anonymization, Traceable choice, List-Unsubscribe, RFC 8058 — one click, Preferences page, Transactional exceptions, DKIM, SPF, DMARC, Sending domain, Tracking domain, Logging, Consent history, Granularity of settings.
Postmetry corpus
What brands actually send
No message from this sending platform has arrived in the corpus yet. This is not a zero: it's an absence of measurement, and nothing is inferred from it.
Postmetry reference sheet
What this ESP allows
Catalog shared by both pages. Each note carries its source, its date, and its confidence level.
On the right, what our emails say about it: matching, contradicted, never observed despite the volume, too few emails to conclude — or out of reach, when the capability can't be read from an email.
Tracking 8 not verified
Unsubscribe 4 not verified
Authentication 5 not verified
Infrastructure & governance 3 not verified
API Yes 1 note · 11/09/2026 Out of reach
Custom fields store additional contact information for personalized email campaigns. … For example, you can create a custom field to store a contact’s nickname or favorite author.
Caveat The page covers contacts and their custom fields, a hundred per account at most; it says nothing about a tracking setting exposed by the API.
Contacts Quick Start Guide · API documentation · last reviewed on 09/11/2026 · confidence high
Limits of this analysis
It doesn't say what a brand has actually configured. A sending platform that allows turning off the pixel says nothing about which brands have done so — that's what a brand's report answers.
It doesn't rank. No score, no recommendation: capabilities don't carry the same weight depending on the use, and that weight isn't ours to set.
A “not checked” cell is not a “no”. It says nobody has gone to look yet, and nothing else.
The corpus does not establish a capability. A rate of observed pixels says what brands send, not what the tool can do.
Sources
1 source- Contacts Quick Start Guide API documentation · confidence high 11/09/2026
Comparable sending platforms
Compare the whole family →Do your emails go through Constant Contact?
The sending platform is read from the headers, not from a claim. The report names it, and says where to fix the findings with that vendor.