Deliverability

Deliverability is the measure of whether the emails you send are accepted and placed by the receiving mailbox provider, rather than blocked at the gateway, bounced, or filtered out of view. It is broader than simply "did the message send." A message can leave your system successfully and still never be seen, which is why deliverability and raw send volume are not the same thing.

Why it matters for outbound

In cold outbound, every reply and meeting depends on the message being read. Poor deliverability silently caps your entire program: the strategy can be sharp and the copy excellent, but if the messages land in spam, none of it converts. Worse, deliverability problems compound, because providers learn from how recipients treat your mail. A weak start can poison a domain for months.

This is why deliverability is treated as a discipline at Outword, not an afterthought. It depends on getting many things right at once: authenticated sending, clean data, sensible volume, and content that earns engagement rather than complaints.

How it works

Deliverability is shaped by a stack of signals the mailbox provider evaluates on every message.

• Authentication: SPF, DKIM, and DMARC verify the sender is who they claim to be.
• Reputation: the standing of the sending domain and identity, built over time.
• Engagement: opens, replies, and the absence of complaints or deletes.
• Hygiene: low bounce and spam rates, which signal a well-managed list.

Get these right and the message reaches the inbox. Get them wrong and you fight an invisible filter on every send. See our deliverability and inbox placement service for how we manage this end to end.