We signed up for eight free transactional tiers with the same generic startup domain and sent identical test mail through each. The free volume was never the problem. The gatekeeper was account approval, which quietly rejected or delayed half of the accounts before a single receipt could leave the building.
Written by Raul del CuadroWe fed the same batch of portal leads into nine platforms and timed how fast each one turned a fresh Zillow inquiry into a text, an email, and a task. The gap that mattered was not template design. It was whether the tool understood that a real estate contact is a relationship, not a marketing address.
Written by Sophie SteffenWe warmed a fresh dedicated IP on eight transactional providers, ran each one through a two-week ramp, and sent identical mail through every account. The surprise was how little the IP itself mattered: warming guidance, traffic separation, and reputation monitoring drove inbox placement far more than owning the address ever did.
Written by Raul del CuadroWe migrated a 4,800-subscriber blog list with 14 months of engagement history into ten email platforms, wired RSS-to-email against a WordPress feed publishing three times a week, ran paid subscriber onboarding at 8 USD per month, and sent a 1,200-recipient newsletter through every tool to track inbox placement.
Written by Sophie SteffenAfter loading the same 1,800-donor file into ten platforms and rebuilding the same year-end appeal sequence in each one, the gap that mattered was not template design. It was whether the tool could tell a board chair from a 20-dollar first-time donor without manual list maintenance every Monday morning.
Written by Carles DuarteWe ran the same six client accounts through ten email platforms for a month, from regional e-commerce to B2B SaaS to a local services franchise. The winners were not the feature-heavy ones, but those that handled client isolation, consolidated billing, and reports a client could actually open unaided.
Written by Carles DuarteAfter running the same membership-renewal sequence through ten platforms with a fictitious boutique studio profile, the gap between fitness-native software and general email tools showed up in places we did not expect. Class waitlist alerts, no-show win-backs, and birthday rewards either flowed through the booking calendar automatically or required hours of manual mapping per workflow.
Written by Jesus BosqueAfter running identical outreach campaigns through 10 cold email platforms, the biggest surprise was how much inbox placement varied between tools using the same sending domain. Two platforms landed over 90% of our test messages in primary inboxes. Three others barely cracked 60%, despite offering similar warmup features on paper.
Written by Carles Duarte