# Kuju Email FAQ Answers to the questions people ask before choosing Kuju Email. HTML version: https://www.kaimoku.tech/kuju-email/faq ## Can I sign up for Kuju Email today? Not publicly yet. Kuju Email is invite-only while it is in private development. If you have received a trial invite, start at mail.kuju.email/signup with the code from your invite email. Otherwise, leave your email address to be told when it opens. See also: [Get notified at launch](https://www.kaimoku.tech/kuju-email#notify) ## How much will it cost? There are four plans. Individual / Family is $10 a month for up to 5 mailboxes, then $5 per mailbox up to 10. Small Business is $5 per mailbox, for 5 to 25 mailboxes. Professional is a $75 monthly platform fee plus $5 per mailbox, from 10 mailboxes. Enterprise is a $250 monthly platform fee plus $5 per mailbox, from 25 mailboxes. Every plan is 17% cheaper (two months free) when billed annually. See also: [Pricing and calculator](https://www.kaimoku.tech/kuju-email/pricing) ## Will there be a free trial? Yes. When Kuju Email opens, every new signup will get a 14-day trial with Professional-level access and an address on demo.kuju.email. When a trial ends, the account freezes: you can still sign in and read your mail, but sending and receiving pause. Your data is kept for 30 days so you can choose a plan. ## Can I use my own domain? Yes, on every paid plan, with unlimited domains at no extra charge. You can either point your domain's nameservers at Kuju and let Kuju publish the mail records, or keep your current DNS host and add the MX, SPF, DKIM and DMARC records yourself. Kuju shows you the exact values and checks each record for you. See also: [What MX records do](https://www.kaimoku.tech/kuju-email/glossary#mx-records) ## Can I bring my existing mail with me? Yes. Kuju imports mail from any provider that offers IMAP, including Gmail, Outlook and Microsoft 365, Fastmail and iCloud. You enter the old mailbox's details into Kuju's import page yourself; for Gmail, Fastmail and iCloud that means an app password. Kuju can measure the old mailbox before anything moves, then imports newest mail first with folders, read/unread flags and original dates intact. Running an import again is safe: messages already imported are skipped. During the closed beta a test migration brings across at most 2 GB per account. Reaching that limit pauses the import; it resumes from the same point when the account converts to a paid plan. Importing copies your mail but does not redirect it. New mail keeps arriving at your old provider until your domain's MX record points at Kuju. ## Can I use my usual mail and calendar apps? Yes, if the app connects to our servers directly from your device. Apple Mail on iPhone, iPad and Mac sets itself up from a profile you download in webmail; Thunderbird and FairEmail find the settings themselves; Samsung Email takes the settings by hand. Apps that copy your mail or your password to their own company's servers are not supported. That includes Outlook for mobile and Mac, new Outlook for Windows, and Spark. Calendars and contacts sync with standard apps over CalDAV and CardDAV. See also: [Mail apps we support, and why](https://www.kaimoku.tech/kuju-email/mail-apps) · [Setting up a mail app](https://www.kaimoku.tech/kuju-email/guide#clients) ## Is my email encrypted? Who can read it? Mail apps connect over TLS 1.3 and webmail is HTTPS only. Message bodies and attachments are stored on an encrypted volume, with the encryption keys managed by our hosting provider. Kuju Email is not end-to-end encrypted, so the service can read stored mail in order to filter, search and serve it, and a small number of Kaimoku operators have technical access to it. Two-factor sign-in protects webmail; mail apps sign in with your account password or an app password, and once two-factor is on only an app password works in them. See also: [Security overview](https://www.kaimoku.tech/kuju-email/security) ## Does Kuju use AI on my email? Not on customer domains today. Kuju Email has AI features — an AI spam and phishing check, message analysis you ask for, and tools such as summaries, reply drafts, task extraction and plain-language search — but we do not offer them on customer domains yet, and a domain administrator cannot turn them on. Nothing from your domain is sent to an AI provider. Kuju's own spam and phishing checks run on every message on our servers without one. When we offer them, each will be off for your domain until your domain administrator turns it on and confirms what is sent. Our privacy policy lists the AI providers we use. Separately, and not AI: when you ask Kuju to check the links in a message, they are compared on our servers against a list of known-bad sites from Google. Only if a link matches is a short hash prefix of it sent to Google, never the address. See also: [When mail content leaves our systems](https://www.kaimoku.tech/kuju-email/security#third-parties) ## Where is my data stored? Your mailbox and account live in the United States: production runs on Akamai (Linode) in the Washington, DC region. Off-site backups are kept in Cloudflare R2; Cloudflare chooses where they are stored, and we have not pinned them to a region. See also: [Security overview](https://www.kaimoku.tech/kuju-email/security) ## Can I take my data with me if I leave? Yes. You can export your mail, calendars and contacts at any time using standard protocols (IMAP, CalDAV and CardDAV), or through the API where your plan includes it. After your account ends you have 30 days to export. Thirty days after an account ends, its records, including folders and message records, are deleted from our database. That automatic deletion does not yet remove the stored content of messages (bodies and attachments); ask us to delete your account and we delete that content too. Database backups are kept for 30 days. Stored mail is also copied daily to an off-site backup that only adds files, so copies of deleted messages can remain in it. See also: [Privacy Policy: data retention](https://www.kaimoku.tech/legal/privacy) ## Can I cancel at any time? Yes, from your account settings or by contacting us. Cancellation takes effect at the end of your current billing period. ## What happens if I run out of storage? Each mailbox includes 5 GB on Individual / Family and 10 GB on the other plans; extra storage is $1 per GB per month. If you go over, you get a warning and a 14-day grace period to clean up or upgrade. If you do nothing, large attachments are throttled, but your email keeps working. See also: [Pricing](https://www.kaimoku.tech/kuju-email/pricing) ## Is there an API? Yes. The API is available on Small Business and above, and is documented endpoint by endpoint. See also: [API documentation](https://www.kaimoku.tech/kuju-email/docs) ## How do I get help? Start with the user guide and this FAQ. If your question is not answered there, write to us through the contact page; a person reads every message and aims to reply by email within two business days. See also: [Contact us](https://www.kaimoku.tech/contact)