A French fashion e-commerce brand grew its email list from 180,000 to 1.4 million subscribers through pop-up campaigns, co-registration, and a giveaway promotion. Within three months, Gmail inbox placement dropped to 55% and the complaint rate reached 0.4%. The brand's primary sending domain was rated BAD in Gmail Postmaster Tools.
The list growth strategy prioritized volume over quality. Co-registration leads had never explicitly signed up for the brand's emails. Giveaway entrants had provided emails to win prizes, not to receive ongoing marketing. Of the 1.4M subscribers, only 220,000 had ever opened an email.
SolutionWe executed a three-phase recovery: immediate stop of all sends to co-registration and giveaway segments; re-engagement campaign to the 220,000 who had previously engaged, running from a new sending domain; gradual warm-up of the new domain with confirmed-engagement subscribers only. The old domain was retired.
Results"We had convinced ourselves that 1.4 million subscribers was an asset. It was actually a liability that was destroying the deliverability of our real audience."
— Email Marketing Director, Fashion E-CommerceRapid list growth through incentivized acquisition systematically destroys deliverability. Recovery requires accepting list shrinkage and rebuilding from the engaged core on clean infrastructure.
