If your quotes and invoices land in junk folders, you lose replies and get paid late. If your domain has no DMARC enforcement, anyone can send an email that looks exactly like it came from your accounts team. We fix both: we find every system that sends email as you, authenticate it, move your domain to DMARC enforcement step by step, and keep watching it.
Order online and pay in US dollars. We then contact you to schedule the setup. Not sure yet? Book a 20-minute call.
Gmail requires every sender to pass SPF or DKIM, and since February 2024 large senders must also publish DMARC. Outlook.com applied the same rule to large senders on 5 May 2025. Smaller senders feel it too: mail that fails these checks is far more likely to be filtered.
Without it: Some land in junk, and you only find out when a client says they never got them
With Tremhost: Every system that sends as you is authenticated, so receivers can trust the mail
Without it: Nothing stops a forged message with your exact address in the From line
With Tremhost: At DMARC reject, receiving servers refuse mail forged in your name
Without it: Mail bounces for days while you work out who to contact
With Tremhost: We check weekly, tell you when it happens and request removal
Without it: It fails authentication silently until customers stop receiving its mail
With Tremhost: We see it in the DMARC reports and tell you how to fix it
The order matters. Tightening DMARC before every legitimate sender is fixed blocks your own mail, so we do it in stages and show you each one.
We publish a monitoring DMARC record and list every service that sends email using your domain: your mail provider, website forms, accounting and payroll systems, newsletter tools.
We correct your SPF record, add DKIM signing for each sender, and give you exact instructions for any change that has to be made inside a third-party tool.
When the reports show your legitimate mail passing, we move the policy to quarantine and then to reject. You approve each step.
We read your DMARC reports, flag new or failing senders, check blocklists weekly and send you a short report in plain English.
Most organisations send from one domain. If you have more, each one is covered separately, because each has its own senders and its own reports.
Prices in US dollars, billed monthly or yearly.
Most organisations start here
Businesses, schools and institutions whose invoices, quotes or notices must reach people.
$47a month
or $564 a year. One-off setup: $184.
Includes a one-off setup that takes the domain to DMARC enforcement.
Order Inbox AssuranceGroups, brands and organisations with several domains, including parked domains that should never send mail.
$47a month per extra sending domain
plus $184 setup each. Domains that never send email: $6 a month each, plus $12 setup.
Add extra domains on the order page.
Order with extra domainsSo you know exactly what you are paying for.
We remove the technical reasons mail is rejected. What you send and to whom still affects whether it lands in the inbox.
We do not send marketing email for you. If you send in bulk, we make sure the tool you use is authenticated.
Protecting your staff from incoming phishing is Armor Mail.
Where a fix has to be made inside a third-party system, we tell you exactly what to change, or make it with access you give us.
Tremhost has run mail servers for Zimbabwean businesses since 2016. Keeping our own sending addresses off blocklists, setting reverse DNS that receivers accept and getting delisted when a client mailbox is abused are routine work for our engineers, not something we learned for this service.
Office 3, Mezzanine Floor, Batanai Gardens, Cnr First Street & Jason Moyo Ave, Harare. Human support Monday to Friday, 08:00–17:00 CAT.
Still unsure? Ask us on WhatsApp or open a ticket.
A DNS record that tells receiving mail servers what to do with messages that claim to come from your domain but fail its checks. At its strongest setting (reject), mail forged in your name is refused before it reaches anyone. DMARC works alongside SPF, which lists the servers allowed to send for you, and DKIM, which signs your messages.
Yes. DMARC is set on your domain, not inside your mailbox provider, and most businesses send from more than one place: their mail provider, a website contact form, an accounting system, a newsletter tool. Each of those has to be authenticated for DMARC enforcement to be safe. We work with Google Workspace, Microsoft 365, Zoho, Tremhost email and other providers.
You can, and a record set to p=none costs nothing. It also stops nothing: p=none only reports. Moving to quarantine or reject is where the protection is, and it is also where legitimate mail gets blocked if one sending system was missed. We read the reports, find every system that sends as you, fix them, and only then tighten the policy.
No, and nobody honestly can. Inbox placement also depends on what you send, who you send it to and how recipients react. What we remove is the technical reasons for rejection: missing or broken SPF, DKIM and DMARC, unaligned senders and blocklisted sending addresses that we can get delisted.
Typically six to ten weeks to reach a reject policy, because we wait for enough report data to be sure no legitimate sender is caught. Domains with few sending systems can move faster. You see each step before we make it.
Access to change your domain's DNS records (or your domain on Tremhost DNS), a list of the tools that send email for you, and someone who can make changes inside those tools when they need a DKIM key added.
No. This service stops other people sending email that pretends to come from your domain, and helps your own mail get delivered. Armor Mail protects your staff from phishing and fake invoices arriving in their inboxes. Many organisations use both.
We help you stop the sending, tell you which account is involved and what to change, and request removal from the blocklists that listed you. Rotating passwords and cleaning affected devices stays with you or your IT provider.
If your problem is somewhere else, one of these may give you more for your money.
Better if you need the mailboxes themselves.
50 mailboxes on your domain for $5 a month, with SPF, DKIM and DMARC set up when you join.
Better if the risk is phishing arriving at your staff.
Phishing and invoice fraud stopped before anyone acts on it. $12 a month for ten mailboxes.
Better if a mailbox or site has been hacked right now.
Same-day triage when something is already wrong.
Better if you want websites, email and endpoints covered together.
Cloudflare, ESET and our engineers, from $200 a month.
In a 20-minute call we look at your domain's SPF, DKIM and DMARC records with you and tell you what we would change first.
