As we approach 2026, UK email benchmarks are shifting. With evolving privacy tools and crowded inboxes, sheer volume is being replaced by quality metrics. Expected benchmarks will emphasise engagement depth: a 30%+ open rate for segmented campaigns, click-to-open rates above 40%, and complaint rates below 0.1%. List growth rates may slow, while re-engagement success. https://www.b2cdatabase.co/uk-email-list/