MailSeenHow to write emails that actually get opened
Subject lines, send times, and sender names — the three levers that determine whether your email gets read.
TipsThe subject line is the only thing that matters first
Recipients decide whether to open your email in under two seconds, based almost entirely on the subject line and sender name. Everything else is secondary.
Short subject lines (under 50 characters) consistently outperform longer ones on mobile. Specificity beats cleverness every time.
Send time affects open rates more than most people think
Tuesday through Thursday mornings between 9 and 11 am in the recipient's timezone reliably produce higher open rates than Friday afternoons or Monday mornings.
MailSeen's open timestamps show you when your recipients actually engage — use that data to optimise your own sending patterns over time.
Your sender name matters
Emails from a real name (John at MailSeen) outperform emails from a company name alone (MailSeen). People open emails from people.
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