DioTrans Manual
This manual explains DioTrans in the order you will actually use it: from creating an account to sending files and managing your organization. If you are new, start with the overall flow below.
FlowOverall flow
Create an account
Use “Get Started” on the app’s top page to register your email address and password. A 7-day free trial starts as soon as you sign up.
Agree to the terms
After your first log-in, you will be asked to agree to the Terms of Service and the Privacy Policy. The content and time of your consent are recorded.
Prepare an organization
Creating an organization lets you invite members and share file transfers. You become the owner and an administrator. You can rename the organization later. If you skip this step, a default organization named “(your name)’s Organization” is created at your first log-in.
Choose storage
Choose where files are stored: your own storage (AWS S3 / Cloudflare R2) or DioTrans R2. Connecting your own storage extends the trial by 21 days.
Send a file
Specify recipients, an expiry, and files. In organizations that require approval, recipients are notified only after an administrator approves the transfer.
Recipients download
Recipients open the link in the notification email, verify their email address with a code, and decrypt the files in their browser.
Subscribe to a paid plan
To keep using DioTrans after the trial, subscribe to a paid plan through Stripe.
ContentsManual contents
1Start using DioTrans
- Signing up and logging inRegistration, email verification, consent, organization creation, log-in and SSO.
- Trial period and storageTrial conditions, choosing a storage plan, and connecting AWS S3 / Cloudflare R2.
- Plans and billingSubscribing to a paid plan, invoices, managing payment details, and cancellation.
2Day-to-day tasks
- Sending filesCreating transfers, expiry, passphrase protection, approvals, and managing sent files.
- Receiving filesNotification emails, email verification, downloads and decryption.
- ContactsPersonal and shared contacts, CSV import and export.
- Transfer logsViewing and searching transfer, notification, verification, and download history.
- Reporting abuseHow to report suspicious transfers or widely shared links to administrators.
- Settings and profileLanguage, profile, signature, email address changes, and data export.
3Administrator manual
- Admin overview and dashboardAdministrator roles, storage usage, login history, and abuse alerts.
- User managementInviting, editing, and removing members, changing roles, and email address changes.
- Pending transfersReviewing and approving or rejecting transfers created by members.
- Organization and storageOrganization name, slug, time zone, approval settings, and S3 / R2 connections.
- Email and SSO settingsOrganization SMTP and external OIDC (SSO) configuration and connection tests.
- Announcements and auditMaintenance notices, handling abuse reports, and reviewing audit logs.
4Appendix
LimitsUsage limits
| Item | During the trial | Paid plan |
|---|---|---|
| File size | Up to 3 MB | Up to 5 GB |
| Files per transfer | Up to 20 | Up to 20 |
| Recipients per transfer | Up to 50 | Up to 50 |
| Download expiry | 1–30 days (default 7 days) | 1–30 days (default 7 days) |
| Trial period | 7 days + 21 days when storage is connected (up to 28 days) | — |
For prices and billing conditions, see Pricing and Billing, cancellation and refunds (Japanese).
NotesConventions used in this manual
- Screenshots are samples. Names, subjects, and other details may differ from your actual screen.
- “Administrator” means an organization administrator or the owner. Administrator tasks are collected in the Administrator manual.
- Settings and screens may change without notice. Last updated: 2026-10-04.
Contact [email protected] if the manual does not solve your problem. Including the screen you were using and the message you saw helps us respond faster.