Small Business Marketing
Why Your Business Emails Miss the Inbox—and What to Check
“The email did not arrive” can mean several things. It may have bounced, landed in spam, gone to another inbox tab or never left the system that was supposed to send it.
Find out which problem you have before changing DNS records.
Identify the sender
List every service sending for your business: staff mail, website forms, invoices, newsletters and your CRM. These may use different systems even when the visible sender address looks similar.
Save a failed message's time, recipient, sending service and any rejection code. Do not put customer information in a public support post.
Check authentication for each system
SPF identifies authorized sending infrastructure. DKIM signs messages. DMARC checks alignment with the visible From domain and publishes handling instructions and reporting information.
Ask each provider for its current domain-authentication instructions. Do not copy somebody else's sample DNS records. Inventory existing senders before changing records, and verify actual delivered message headers afterward.
For personal Gmail recipients, Google's current requirements distinguish all senders from bulk senders. All senders need SPF or DKIM; bulk senders need SPF, DKIM and DMARC, plus other requirements including alignment and one-click unsubscribe for marketing and subscribed messages. Authentication is necessary housekeeping, not an inbox guarantee.
Look at sending behavior
Stop sending to invalid addresses and people who opted out. Keep a record of how subscribers joined. A purchased list may increase the number of addresses while making the audience less relevant.
Send what people expected when they subscribed. If a customer requested an invoice, that does not mean they asked for a daily promotion.
Make leaving easy
Use your email platform's unsubscribe controls and test them. Do not make someone log in or argue with you to stop promotional mail. Check the FTC's commercial-email guidance for the U.S. requirements relevant to your messages.
Test the fix
Send representative messages through the actual system to accounts you control at several providers. Check delivery, authentication, formatting and unsubscribe behavior. Review bounce and complaint reports over time.
A test score cannot prove that every customer's inbox will accept the next campaign. Neither can changing a few supposedly forbidden words.
If missed messages are interrupting sales, first identify where the handoff fails. The Dive can help separate a delivery problem from a follow-up problem.
Related reading
Eight Practical Ways to Grow a Useful Email List
A Small Business Website Audit You Can Actually Use