The concept of a single best day and time to send an email is misleading. Instead, marketers should vary send times throughout the week to reach different segments of their audience. The key metric is the aggregate number of unique individuals engaged weekly, not the performance of a single blast.

Recent data indicates a significant shift in optimal email marketing send times. Contrary to the long-held belief in early morning sends, emails delivered between 8:00 and 8:30 AM are now generating a 12% performance lift compared to the traditional 6:00 to 8:00 AM window.

Data shows a 75% year-over-year increase in Friday webinar attendance. Marketers who avoid Fridays are missing a key opportunity, as professionals now use this day for content consumption and self-improvement, a trend that accelerated post-COVID.

Contrary to belief, Fridays are a peak day for webinar registration as professionals focus on self-improvement. Similarly, sending long-form emails on Sunday mornings sees high click-through rates as executives catch up on reading without workplace distractions.

Instead of optimizing for a single "best" send time, marketers should vary sending days and times (e.g., evenings, weekends). This strategy acknowledges that different people within your database interact with email at different times, maximizing overall reach and engagement across your entire list.

Data reveals Sunday is a critical day for email marketing, particularly in the late morning. An 11 a.m. send time on Sunday can achieve open rates as high as 33.69%, one of the strongest of the week, while noon delivers a strong conversion rate, making it a key window for marketers.

Contrary to the common practice of avoiding Friday for professional events, recent data shows it has become a top day for webinar attendance, along with Thursday. The show-up rate for Friday webinars has surged from 27% to 35%, a huge increase that marketers should leverage.

The 10-day period from January 20-30 is a prime time for email campaigns. Professionals are past the holiday slump and newly motivated for the year, making them highly receptive to demo requests, content downloads, and purchases before the next holiday marketing cycle begins.

The idea of a single best time to send an email is outdated. Instead, measure success by the weekly aggregate of unique individuals opening your emails. Sending at various days and times hits different audience segments, maximizing your total reach over time.