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Practical answers, comparisons and playbooks for email deliverability, maintained by the Provena team.
The pillar guide to B2B outbound — ICP, channels, copy, metrics and the build-vs-buy decision, with links to every playbook in the cluster.
SPF authorises sending systems, DKIM signs message content with a domain, and DMARC evaluates domain alignment and publishes a policy and reporting route. They work together but solve different problems. Configure every legitimate sender, align the visible From domain and inspect real message headers before increasing email volume.
No universal list of forbidden words determines inbox placement. Mailbox providers evaluate authentication, reputation, complaint signals, sending behaviour, content and recipient response together. Remove manipulative or misleading language because it harms trust, but fix targeting, authentication, list quality and volume before obsessing over a single word.
Verify an email by checking syntax, domain and mail server records, then using a reputable verifier for mailbox risk and confirming the person still holds the role. A deliverable address is not automatically a relevant contact. Suppress previous objections and use a small monitored send before trusting a large imported list.
DMARC alignment means the domain visible in the From address matches, under relaxed or strict rules, the domain authenticated by SPF or DKIM. A message can pass SPF or DKIM and still fail DMARC when the identities differ. Inspect real headers and align at least one valid path for every sender.
Email warmup should mean establishing correct authentication and a gradual history of wanted, relevant sending. It is not permission to generate artificial engagement or jump to large cold volumes. Google advises increasing volume slowly and avoiding sudden spikes. Start small, monitor provider feedback and reduce volume when errors or complaints rise.
One click unsubscribe uses message headers that let supported inboxes process an unsubscribe with one action, alongside a visible unsubscribe route in the message. Google requires it for qualifying marketing and subscribed bulk mail. It does not replace CAN SPAM duties or the need to suppress manual objections across every system.
The hub collects Provena guides, comparisons and practical playbooks about email deliverability, with links to deeper field notes.
They are written for founders, revenue leaders and operators who need clear choices and a practical route from research to execution.
The hub updates automatically whenever a new article is published in this category, while each article carries its own honest modification date.