Why Your Site's Email Shows A Different Sender
Mail your website sends, such as contact-form notifications, password resets and order emails, leaves through Oxyforge’s shared sending service. Most of the time it goes out exactly as WordPress wrote it. Sometimes the person receiving it sees a different sender than the one you set. This page explains when that happens, why, and what you can do about it.
What You Might See
There are two things a recipient can notice, and both are normal.
“via sgmb.oxymailer.com” next to your address. Gmail and some other mail apps show this when a message was sent on your domain’s behalf by another server. Your From address is unchanged. Nothing needs fixing.
The sender is a site address at oxymailer.com. The message arrives from something like "Your Site Name" <yoursite@sgmb.oxymailer.com> instead of the address you set. Your own address is still on the message as the reply-to, so pressing Reply in any mail app writes back to you, not to us.
Why The Sender Changes
Mail providers such as Gmail and Outlook check that a message claiming to come from a domain was really sent by a server that domain allows. The domain owner publishes a rule, called a DMARC policy, telling them what to do with mail that fails that check: let it through, put it in spam, or refuse it outright.
Our sending service is not on your domain’s list of allowed senders, so mail sent as your domain fails that check. If your domain’s rule says to put failing mail in spam or refuse it, sending as your domain would mean your contact-form notifications and order emails quietly never arrive.
So in two situations the sender is switched to a site address of ours, which passes every check, and your address moves to the reply-to:
- Your domain’s DMARC policy is set to quarantine or reject. This also covers addresses on a subdomain such as
wordpress@www.yourdomain.com, because providers apply the main domain’s rule to its subdomains unless you have set a separate one. WordPress sends from an address like that by default. - The From address is not at a domain your site runs on. A site cannot send as
someone@gmail.comor another company’s domain; mail like that is refused or filtered almost everywhere, so it goes out from our address with yours as the reply-to.
We never change your domain’s DNS or its DMARC policy. Those are yours. We only send the mail in a way that your policy, and the receiving provider, will accept.
How To Send As Your Own Address
If you want mail to arrive from your own address with no “via”, connect your own sending provider, such as Brevo, Mailgun, Postmark, Amazon SES or Google Workspace, with a plugin like WP Mail SMTP. The provider gives you a few DNS records to add, which authorise it to send for your domain, and from then on your mail passes every check under your own name. You also get delivery logs. See connect your own SMTP provider.
You could also loosen your domain’s DMARC policy to p=none, which stops the switch. That is your decision to make, but we do not recommend it: the policy is what stops other people sending fake mail in your domain’s name, and whoever manages your domain’s email may have set it on purpose. Connecting your own provider gets you the same result without that trade-off.
Quick Reference
| What you see | What it means | Anything to do? |
|---|---|---|
| Your address, “via sgmb.oxymailer.com” | Sent as you, on your behalf | No |
| A site address at oxymailer.com, your address as reply-to | Your domain’s policy would have refused or junked it as you | Optional: connect your own provider |
| Mail not arriving at all | Something else | See what your website can send |
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