Resources
Guides, answers and documents
Everything on this site that is not a product page: the technical guides, the questions people ask before buying, and the legal documents with an honest label on each.
01start here
The two pages most people want first
- FAQ
Frequently asked questions
What happens when a mailbox fails, who the domain is registered to, what you can take with you if you leave, and how to connect a sending tool.
- Product · 8 steps
How it works
The eight provisioning steps in the order they run, with the typical time each takes and the one that dominates the total.
02guides
Four pieces of real technical writing
Each came out of a problem that had to be solved to make provisioning work unattended.
- Authentication · 8 min
SPF, DKIM and DMARC
Three DNS records, three different claims. What SPF checks, what DKIM signs, why DMARC needs alignment rather than just a pass, and which of them Infrabox publishes for you.
- Credentials · 7 min
Why app passwords are a dead end
App passwords need 2-step verification, 2-step verification can only be enabled by the user, and a brand-new Workspace user cannot sign in without a phone. The full chain, and what it forces.
- Credentials · 8 min
Domain-wide delegation
One service account, authorised once per Workspace, impersonating any mailbox on demand. Why that scales where app passwords do not, and what it costs you in blast radius.
- Sending · 9 min
Connecting your sending tool
What to type into Instantly, Smartlead or Lemlist, what the relay does with a message once it has it, and how to read the error codes it sends back.
03legal
Written from the product
Four published policies plus an SLA for a tier not yet sold. Each says what it actually covers.
- Acceptable Use PolicyPublishedWhat may and may not be sent through infrastructure Infrabox provisions, the list-hygiene rules, and the enforcement ladder that follows a breach.
- Deliverability SLAConditionalThe placement guarantee, the sender-hygiene conditions it depends on, how placement is measured, and the service-credit remedy. It applies to a Guaranteed Placement subscription, which is not on sale today.
- Terms of ServicePublishedThe master agreement: what Infrabox provides, what you undertake, how the subscription runs and how either side ends it.
- Privacy PolicyPublishedHow Infrabox handles your account data, what the relay records about a message you send, the administrative access that exists to your mailboxes, and who else processes any of it.
- Refund PolicyPublishedRefunds, cancellation, and what happens to a prepaid mailbox and a registered domain when a subscription ends.
04what is missing
What is not here
There are no case studies, customer stories or testimonials on this site. Not as a design decision — there is simply nothing to put there that would be true, and social proof is the one kind of content where inventing it is indistinguishable from lying. When there are customers willing to be named, this is where they will be.
There is also no blog. Four guides that came out of real problems are more use than forty that came out of a keyword list.
Next
Tell us what you need to send.
How many mailboxes, on how many domains, and which tool you send with. We will tell you what it costs and what the pipeline will do with it.