What is email deliverability?
Email deliverability is the ability of your emails to reach the inbox rather than spam, driven by domain reputation, authentication, list quality, and sending behavior.
Email deliverability is whether your messages actually land in the inbox. It is the single biggest lever in cold outbound: a great campaign to a burned domain books nothing.
What drives deliverability
- Verified lists. Sending to invalid addresses spikes bounces and wrecks reputation. Verify before send.
- Authentication. SPF, DKIM, and DMARC prove you are who you say you are.
- Domain warming & pacing. Ramp volume gradually; do not blast.
- Relevance. Replies and low spam-complaints signal good sending.
How Agent GTM protects deliverability
Agent GTM verifies every address before send, paces sending, and keeps a human approving campaigns, the opposite of spray-and-pray. That is why human-in-the-loop outbound protects your domain where autonomous bots burned theirs. See human-in-the-loop outbound.
- Verification before send is the highest-leverage deliverability practice.
- SPF/DKIM/DMARC authentication is table stakes.
- Agent GTM verifies, paces, and requires human approval to protect your domain.
Frequently asked questions
How do I improve cold email deliverability?
Verify every address before sending, authenticate your domain (SPF/DKIM/DMARC), warm up gradually, pace volume, and keep messages relevant to maintain replies and low complaints.
Does Agent GTM verify emails before sending?
Yes. Every address is verified before send, and campaigns are human-reviewed, protecting your domain reputation.