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Email Deliverability: Ensuring Your Messages Reach the Inbox
Understand the technical and operational practices that help legitimate marketing emails reach the inbox.
Build a trusted sending foundation
Deliverability depends on whether mailbox providers can identify you and see consistent, wanted sending behavior. Authenticate your sending domain and use a clear, stable sender identity so recipients and providers can recognize your messages.
If you are starting with a new domain or sending infrastructure, increase volume gradually. Sudden, large sends from a new source make it harder to establish a healthy reputation.
- Set up SPF, DKIM, and DMARC for your sending domain.
- Use a consistent From name and address.
- Warm new sending infrastructure gradually.
Send content people expect
Permission and relevance are deliverability practices, not only compliance requirements. Send the content subscribers signed up for, at a frequency they can reasonably expect, and make it easy to leave the list.
A clear unsubscribe link and prompt honoring of preferences reduce complaints. Complaints and repeated non-engagement are stronger warning signs than a single campaign's open rate.
- Do not use purchased or scraped lists.
- Honor unsubscribes and preferences immediately.
- Avoid misleading sender names and subject lines.
Watch the signals and act early
Monitor bounces, complaint rates, delivery trends, and engagement by provider. Investigate changes before they affect a larger share of your program, especially after a new import, major campaign, or technical change.
Use these signals to improve your process: repair invalid sources, refine your sign-up flow, and segment re-engagement efforts instead of continuing to mail everyone at the same cadence.
- Suppress hard bounces promptly.
- Review engagement by mailbox provider.
- Run a thoughtful re-engagement program before removing inactive contacts.