#Terms of Use

Last updated: November 9, 2026

These Terms are the agreement between you and Postra LLC (“Postra”, “we”, “us”) for our websites, apps, and email service (the “Service”). By creating an account or using the Service, you agree to them. If you do not agree, do not use Postra.

Postra LLC · Wyoming Filing ID 2026-002122423 · 30 N Gould St, STE R, Sheridan, WY 82801, United States
[email protected] · Privacy Policy

#Account

  1. You must be at least 18 and able to form a binding contract.
  2. If you accept these Terms for a company or other entity (an “Organization”), you confirm you can bind it. “You” then means that Organization and its authorized users. Admins are responsible for people they invite and for content on domains they control.
  3. Keep your login accurate and your credentials private. You are responsible for activity on your account except to the extent we failed to use reasonable security.
  4. Tell us promptly at [email protected] if you think someone got in without permission.
  5. You may sign in with a password or with Google or Apple. If you use Apple Hide My Email, that relay address is your account email for Postra.
  6. We may use proof-of-work challenges, rate limits, quarantine, and similar tools to protect the Service.

#Your mail and our license

  1. You (or your Organization, or the rightful owner) keep ownership of Customer Content: messages, attachments, and related mailbox state you submit or receive through Postra.
  2. You give Postra a worldwide, non-exclusive license to host, copy, transmit, process, index, display, and back up Customer Content only as needed to run, secure, maintain, and improve the Service, to comply with law, and as described in the Privacy Policy and, for Organization custom-domain content, the DPA.
  3. Improve means fixing bugs, keeping the Service stable and secure, and building features that run on our own infrastructure. It does not mean selling your mail, using it for third-party ads, or giving Customer Content to third parties to train foundation models. The Privacy Policy covers sale, sharing, and advertising in more detail.
  4. Postra and its licensors own the Service itself (software, branding, docs). These Terms do not transfer that ownership. Do not copy, modify, or reverse engineer the Service except where mandatory law allows.
  5. Feedback you send us may be used freely without owing you anything.

#Acceptable use

Do not use Postra to:

  1. Break the law or other people’s rights
  2. Send spam, phishing, or deceptive bulk mail, or run an open relay
  3. Distribute malware
  4. Harass people or distribute illegal content, including child sexual abuse material
  5. Attack, scrape, or bypass our security or rate limits
  6. Impersonate others with forged headers or similar tricks
  7. Park high volumes of machine-generated logs or bounce pipelines that are not ordinary human email
  8. Resell or white-label the Service without our written okay

We may investigate, remove content, throttle, suspend, or close accounts when we reasonably believe these rules were broken or the law requires it.

#Domains and delivery

  1. You must own or be allowed to use any custom domain you connect.
  2. Internet mail depends on third parties. We do not promise every message will be accepted or land in an inbox. You are responsible for SPF, DKIM, DMARC, and related DNS as we document.
  3. We may update technical domain requirements to protect deliverability and shared reputation.

#Plans, renewal, and payment

  1. Features vary by plan. The site is informational; these Terms and any order form win if they conflict.
  2. Fees, billing cycle, currency, taxes, and renewals are shown at purchase or in an order form. Payments run through Stripe.
  3. Auto-renewal. Paid plans renew automatically at the end of each billing period for the then-current price unless you cancel before renewal. We will show the plan, price, and period clearly before you pay. Price changes for renewals get notice as required by law (and we aim for at least 30 days when we can).
  4. How to cancel. Cancel anytime in the signed-in product under account or subscription settings (for example /me/subscription), or by emailing [email protected] from your account email. Cancellation stops the next renewal. You keep access through the end of the period you already paid for. Closing the whole account is under Closing, export, deletion.
  5. Paid plans are prepaid for the billing period you choose. Like most subscription software, we do not cash-refund unused days mid-cycle, except where the law requires a refund.
  6. If something goes wrong on our side and we want to make it right, we may offer an account credit toward future Postra fees. Credits are not cash, are not transferable, and may expire when we say so when we issue them.
  7. If you do not pay when due, we may move you to a lower plan (including a free plan) after reasonable notice. Non-payment alone is not account termination. Unpaid fees remain owed unless we agree otherwise.
  8. Fees are exclusive of taxes unless we say otherwise. You pay taxes other than taxes on our net income.
  9. Please talk to us before filing a chargeback for a period you already used. Unwarranted chargebacks may lead to suspension while we sort it out.

#Privacy roles

  1. The Privacy Policy explains how we handle personal information. It does not waive rights the law says you cannot waive.
  2. For mailboxes on domains we operate (including @postra.so), and for Account Data, Postra is the business under US state privacy laws.
  3. For Customer Content on an Organization’s custom domain, the Organization is the business and Postra is the service provider. The DPA applies. If non-US privacy law also applies to that content, the DPA’s non-US section uses that law’s controller / processor labels where needed.
  4. Organizations must give any notices and get any consents their end users need for custom-domain mail.

#Third parties

Vendors that help run the Service are listed on Vendors. Their own terms cover their services. If you use Google or Apple sign-in, keep a working login method in case those providers change or go down.

#When our staff may access Customer Content

We treat Customer Content as confidential. People at Postra may access it only for support you request (we ask first when we can), to investigate abuse or security incidents or breaches of these Terms, to fix a fault that blocks automated processing, when the law requires it, or at your clear direction. In each case we use the least data needed. Access is limited to people who need it and logged when we can.

#Closing, export, deletion

  1. You can stop using Postra and close your account in the product (for example /me/goodbye) or by contacting us.
  2. We may suspend or terminate access if we reasonably believe you broke these Terms, present a security or legal risk, or the law requires it. We will give notice when we can. Non-payment is handled under Plans, renewal, and payment, not as termination under this section.
  3. We may change or discontinue the Service with reasonable notice when we can. Paid feature cuts follow applicable consumer law and any order form.
  4. While the account is active, Organization admins may export custom-domain mail through domain export tools (ZIP per mailbox, max 31 consecutive days per request; successive requests allowed). We may rate-limit exports to keep the platform stable. Details: DPA Section 10 and Schedule 4.
  5. After closure we do not have to keep Customer Content except as the Privacy Policy, DPA, or law require. Export before you leave.
  6. We delete Customer Content from active systems within 60 days after account closure, subject to backups, legal holds, and abuse retention in the Privacy Policy.

#Disclaimers

We work hard to keep Postra reliable, but email runs across the open internet. To the fullest extent the law allows, the Service is provided “as is” and “as available”. We do not guarantee uninterrupted uptime, perfect spam filtering, or that every message will land where you hope. We also do not guarantee a particular compliance or e-discovery outcome unless we put that in a signed writing. Rights the law says you cannot waive stay yours.

#Liability

Software companies usually put a ceiling on how much they can owe if something goes wrong. Ours works like this:

  1. We do not try to limit liability the law says cannot be limited (for example fraud, or death or personal injury caused by negligence where that rule applies).
  2. Otherwise, if Postra is liable to you under these Terms, the most we owe in total is what you paid us for the Service in the twelve months before the claim. That keeps the risk tied to the relationship, not to open-ended damages.
  3. We are not liable for indirect or consequential losses, lost profits or goodwill, or the cost of substitute services, even if we were told those losses were possible.
  4. For loss or corruption of mail or other data, our responsibility is limited to restoring from available backups where we reasonably can, and otherwise to the liability cap above. We do not owe unlimited damages for data loss.
  5. If mandatory consumer law gives you more, you keep what that law requires. Everything else in this section still applies as far as it can.
  6. If you use Postra as an Organization, you will defend and indemnify us against third-party claims that come from Customer Content, your domains, or your breach of Acceptable use or law, except to the extent we caused the problem through willful misconduct.

#Force majeure

Neither of us is on the hook for delay or failure (other than payment for service already provided) when something outside reasonable control gets in the way: disaster, war, government action, labour dispute, utility failure, a wide network outage, or a hosting provider we rely on going down. We will try to mitigate and get back online. If that kind of event blocks material use for more than 60 consecutive days, either of us may end the affected Service on written notice. Going forward we stop charging for what we terminated. Prepaid time is handled under Plans, renewal, and payment (including possible account credit). Mandatory consumer protections still apply.

#Governing law

  1. These Terms are governed by the laws of the State of Wyoming and applicable US federal law, without conflict-of-law rules that would point elsewhere.
  2. State and federal courts sitting in Wyoming have exclusive jurisdiction, except where mandatory law of your place of residence requires a local court or keeps local consumer protections you cannot waive.
  3. Organizations submit to Wyoming courts. We may seek injunctive relief anywhere to protect IP or confidential information.
  4. If a consumer protection rule where you live makes a clause unenforceable, we narrow or drop that clause only as far as required. The rest of these Terms stay.

#General

  1. We may update these Terms. We will change the date above. Material changes get extra notice when required. Continued use after the effective date is acceptance, except where the law needs a fresh yes.
  2. If one clause fails, the rest stay, and we trim the bad clause only as needed.
  3. Notices to us: [email protected] or 30 N Gould St, STE R, Sheridan, WY 82801, United States. Notices to you: your account email or in-product notice.
  4. These Terms, the Privacy Policy, Acceptable use, any order form, and the DPA (for Organizations) are the whole agreement on this subject.
  5. You may not assign these Terms without our consent. We may assign them in a reorganization or asset sale.
  6. Not enforcing a clause is not a waiver.
  7. English wins over any translation.
  8. Do not use the Service in violation of export or sanctions rules. You confirm you are not a prohibited party.

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