Business Role Addresses
How to Set Up abuse@ and Postmaster Addresses Correctly
abuse postmaster email address: one MX set, leftover hosts gone, Gmail or Outlook as the store.
abuse postmaster email address
Read the guideMailerZ Blog
Domain email guides you can operate.
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Security & Abuse
Custom Domain Email Threat Model: DNS Hijack, Credential Theft and Abuse
If they own NS they own inbound. Leftover MX is self-hijack.
custom domain email threat model
Read the guideCatch-all & Routing
Email Routing to Multiple Destinations: When It Helps and When It Hurts
Fan-out is a choice. Two people answering hello@ need a rule. Two people receiving harvested names need hold.
email routing multiple destinations
Read the guideDeliverability & Spam
Email Forwarding Deliverability Checklist Before Going Live
Routes before MX. Probe before the homepage. Dual MX is not a gate you pass.
email forwarding deliverability checklist
Read the guideCompetitor Comparisons
Best ImprovMX Alternative for Gmail-Based Teams
An ImprovMX alternative is an MX swap, not an inbox export. Recreate routes, delete leftover MX, and test from another mailbox before you cancel.
improvmx alternative
Read the guideCatch-all & Routing
Why Catch-All Forwarding Can Become a Spam Cannon
Unknown FORWARD dumps harvested names into one inbox. Hold unknown. Time-box any audit. Leave the destination mailbox MX alone.
catch all forwarding spam
Read the guidePersonal Domains
Should You Use Catch-All on a Personal Domain?
Guesses should not train Gmail. Hold them.
personal domain catch all
Read the guideCost & Workspace Alternatives
Custom Domain Email Without Monthly Per-User Pricing
Routes are not seats. Prove inbound on Free. Pay yearly Solo when the From must travel. Buy a suite only when you need hosted mailboxes.
custom domain email without per user pricing
Read the guideDNS & MX
DNS Looks Correct but Email Still Fails: What to Check Next
Pretty DNS is the start. Exclusive MX, named alias, history, and a non-self probe close the ticket.
dns correct email not working
Read the guideAgency & Multi-domain
Multi-Domain Email Forwarding: Architecture and Operational Checklist
One owner per zone. Named lists. Separate secrets. No shared leftover template.
multi domain email forwarding
Read the guideSPF DKIM DMARC SRS ARC
SPF Explained for Email Forwarding: Why Forwarders Complicate It
SPF judges the hop, not the visible From. Naive forwards fail at Gmail. MailerZ rewrites MAIL FROM only.
spf email forwarding
Read the guideCompetitor Comparisons
Best Cloudflare Email Routing Alternative When You Need Send-As
Routing delivers inbound. Send-as needs authenticated SMTP. Cut leftover MX, prove inbound, then attach one outbound hop on a paid plan.
cloudflare email routing alternative send as
Read the guideCatch-all & Routing
How to Route Unknown Email Addresses Without Flooding Your Inbox
Unknown local-parts are a policy, not a virtue. Hold them. Name the ones customers actually used.
route unknown email addresses
Read the guideCatch-all & Routing
What Is a Catch-All Email Address and Should You Enable It?
Catch-all is the policy for names you did not print. Hold unknowns until a typo is worth the spam.
what is catch all email
Read the guideDelivery Recovery & Observability
What an SMTP Audit Trail Should Contain
smtp audit trail: one MX set, leftover hosts gone, Gmail or Outlook as the store.
smtp audit trail
Read the guide