ABOUT
What WhichMailer is, and who answers for it
WhichMailer is an independent comparison site for email marketing platforms, written for teams that already run a list and need to choose or change their platform. It is published by Gwendal Goron, and every price on the site traces back to an official pricing page.
Why this site exists
Most email platform comparisons are written for people starting from zero, and most of them copy each other's pricing tables until nobody knows which numbers are current. WhichMailer starts from the opposite end: you have contacts, a cadence, automations, and a migration risk. The useful questions are what your size really costs on each ladder, which sending limits bite at your cadence, and what survives the move.
Who is behind it
WhichMailer is published by Gwendal Goron, an independent publisher based in France who runs a portfolio of software comparison sites. He is the only person responsible for this site: there is no editorial team and no review board, and nobody else signs a page.
What that means in practice: the registry, the calculator and the guides are written and maintained from the vendors' own published pages. No paid account is held on any of the nine platforms, no campaign has been sent through them for this site, and no migration has been run. Where a page describes a platform, it describes what the platform documents, and it says so. Mistakes are corrected when readers point them out: contact. Every source used is listed on the sources page.
The rules every page follows
Prices come from official pricing pages and are stored in one registry with the date they were checked. Tests are only claimed when they were run. Affiliate links never change an amount or a verdict. The full set of rules is in the methodology, and how we earn money is in the affiliate disclosure.