7 ways to revive dormant email lists without wrecking deliverability | MarTech

"Just because contacts are in your CRM doesn't mean they're safe to send to. The older your list, the more likely you have risky or invalid emails rotting inside. Also, ISPs like Gmail monitor spikes in email sends and are suspicious of emails from cold or new senders. Even if your email gets delivered, there's a chance your reader won't remember you and is more likely to mark you as spam, which hurts your sender reputation."

"People who didn't engage with email before aren't likely to re-engage. If someone isn't active on a given channel, you're going to have a hard time reaching them. The same principle applies to email marketing. HubSpot calls this graymail and recommends users develop a send and suppression policy accordingly."

"Dormant contacts are one of the fastest ways to damage sender reputation and trigger spam filtering. The safest approach is to rebuild engagement gradually and treat dormant contacts as high-risk sends."

Dormant email lists present significant deliverability risks because they contain invalid or risky email addresses and inactive subscribers unlikely to re-engage. ISPs monitor send volume spikes and are suspicious of emails from cold senders, increasing spam complaint likelihood. Inactive subscribers who didn't engage previously are unlikely to respond positively, potentially marking emails as spam and harming sender reputation. Marketers should treat dormant contacts as high-risk sends and develop clear suppression policies. If re-engagement is necessary, dormant segments should be the last priority. Proper DNS configuration with SPF, DKIM, and DMARC is essential before attempting any re-engagement campaigns.

Read at MarTech