The Absolute Best Time to Send Email Campaigns in 2025

In 2025, determining the optimal time to send email campaigns remains a crucial aspect of email marketing strategy, as it significantly influences engagement and delivery rates. While there is no universal answer for the best time to send emails, examining historical data and testing different scenarios can help marketers find their "sweet spot." Twilio SendGrid data suggests that peak send times during Black Friday and Cyber Monday are around 7 AM, with peak open times occurring between 8 and 9 AM. Outside of holidays, sending emails on Tuesdays at either 7 or 11 AM tends to yield higher open rates, though this can vary depending on the audience's habits and industry trends. B2B audiences may prefer weekday emails, while B2C audiences might engage more during weekends. A/B testing is recommended to fine-tune send times, considering factors like time zones and device usage. Additionally, avoiding peak ISP traffic times—typically at exact quarters of the hour—can improve deliverability. Ultimately, while timing is important, engaging content remains essential for sustaining audience interest.