As highlighted, the single biggest obstacle to maintaining a "current" list is data decay. Research indicates that email lists can degrade by as much as 22.5% annually, a figure that has climbed in recent years. The primary drivers of this decay are job changes, abandoned accounts, and domain expirations. For those relying on third-party data, a staggering 38% of email addresses in marketing databases are estimated to be invalid or risky.
: Using gmail.com , hotmail.com , or yahoo.co.jp is often seen as less formal and is less common for established B2B interactions. Top Verified Company Lists & Databases (2022)
(small music bars, indie cinemas, galleries)
You may send a B2B marketing email without prior opt-in only if the company or individual has publicly listed their email address on the internet for business purposes, and they have not explicitly stated "No sales or marketing emails allowed" (営業メールお断り).
