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Why e-mails from your domain land in spam, and how to fix it. We explain SPF, DKIM, DMARC and MX records in plain words, with example DNS entries. Articles show common mistakes such as too many SPF lookups, missing DKIM selectors or a DMARC policy that is never enforced. Each guide ends with the exact records to add or change. We also cover how to protect your domain from people sending e-mail in your name. Good e-mail authentication makes invoices, offers and password resets reach the inbox.
6 ก.ย. 2026 · อ่าน 7 นาทีSpam Traps Explained: What They Are and How to Avoid Them
Spam traps are addresses that catch senders with poor list practices. Learn the main types, how they end up on lists, and how to…
5 ก.ย. 2026 · อ่าน 8 นาทีDouble Opt-In vs Single Opt-In: Which Is Better for Your List?
Double opt-in confirms every subscriber by e-mail; single opt-in adds them at once. Compare list quality, deliverability, growth and compliance to choose well.
3 ก.ย. 2026 · อ่าน 7 นาทีHow to Reduce Spam Complaints and Keep Your Spam Rate Low
Spam complaints hurt your sender reputation more than almost anything else. Learn why people press Report spam and the practical steps that keep the…
2 ก.ย. 2026 · อ่าน 8 นาทีShould You Send Marketing Email from a Subdomain? Pros and Cons
Sending newsletters from a subdomain can protect your main domain's reputation. Learn when it helps, when it does not, and how to authenticate it…
1 ก.ย. 2026 · อ่าน 7 นาทีEmail Deliverability Checklist: 20 Checks for Small Businesses
A practical 20-point e-mail deliverability checklist for small businesses: DNS records, sending systems, list habits and monitoring, in the right order.
31 ส.ค. 2026 · อ่าน 7 นาทีOrder Confirmation Emails Not Arriving? Fix Your Shop’s Mail
Online shop order and shipping e-mails missing or in spam? Learn why transactional mail fails, how to authenticate it and how to separate it…
30 ส.ค. 2026 · อ่าน 7 นาทีShared vs Dedicated IP for Email: Which One Do You Need?
Should your business send e-mail from a shared or a dedicated IP address? Compare reputation, volume needs, warm-up and cost to choose the right…
29 ส.ค. 2026 · อ่าน 8 นาทีSwitching Email Providers: A Checklist to Avoid Lost Mail
Moving business e-mail to a new provider? Follow this checklist for MX, SPF, DKIM, DMARC, TTLs and mailbox migration so no messages are lost…
28 ส.ค. 2026 · อ่าน 8 นาทีHow to Read Email Headers to Check SPF, DKIM and DMARC
E-mail headers show exactly why a message passed or failed authentication. Learn how to open them in Gmail and Outlook and read Authentication-Results.
27 ส.ค. 2026 · อ่าน 8 นาทีEmail Forwarding and Authentication: SPF, SRS and ARC Explained
Forwarded e-mail often fails SPF and sometimes DMARC. Learn why forwarding breaks authentication and how DKIM, SRS and ARC keep forwarded mail deliverable.
26 ส.ค. 2026 · อ่าน 7 นาทีOne-Click Unsubscribe: How List-Unsubscribe Headers Work
Gmail and Yahoo expect one-click unsubscribe in marketing mail. Learn how List-Unsubscribe and List-Unsubscribe-Post work and how to test your setup.
25 ส.ค. 2026 · อ่าน 7 นาทีEmail Bounce Codes Explained: Hard vs Soft Bounces and Fixes
Learn to read e-mail bounce messages: the difference between hard and soft bounces, what common SMTP codes mean and how to fix the causes…