A client reads an article about encrypted email, and the next ticket says: can we move to Tuta? For a small MSP or hosting reseller, that request hides three separate questions. Can you resell Tuta, or at least manage it for them? What does it cost for a team their size? And what does the client give up, given that Tuta works only through its own apps, with no IMAP, POP or SMTP for Outlook or the iPhone mail app?

This guide answers each question from Tuta's own pages, checked in September 2026, then shows where hosted mailboxes from Atriomail fit instead: $1.39 per mailbox per month with 15 GB included, standard mail apps, and a resale price you set. It also says plainly where Tuta is the better answer, because for a client who genuinely needs end-to-end encryption, it is. You can create an Atriomail account without a card while you read; mailboxes are billed from the first one.

Table of Contents

Key Takeaways

QuestionShort answer
Can you resell Tuta?Tuta's business pages describe no reseller, partner or wholesale program. You can earn from a markup above its list prices or from admin time.
What it costs€6, €8 or €12 per user per month on the Essential, Advanced and Unlimited business plans, paid yearly.
What the client gives upNo IMAP, POP3 or SMTP on any plan. Users work in Tuta's web, desktop and mobile apps only.
What the client gainsEnd-to-end encryption of subjects, message bodies, attachments, calendars and contacts.
Leaving Tuta laterNo IMAP-based migration tool can sign in to a Tuta mailbox, so mail is exported from Tuta's desktop app first.
What Atriomail does for this problemMailboxes at $1.39 per month with 15 GB, billed at your price, working in Outlook and phone mail apps, with a WHMCS 9 module. Atriomail does not offer end-to-end encryption.

Weighing Tuta against a mailbox you can bill yourself? Atriomail charges $1.39 per mailbox per month with 15 GB included, and you decide what your client pays. Creating an account is free and needs no card; mailboxes are billed from the first one.

Create a free account   See pricing

What Tuta Business Offers in 2026

Tuta (formerly Tutanota) is a German email and calendar service built around end-to-end encryption. Its business plans come in three tiers, quoted in euros per user per month when paid yearly (Tuta's business plan guide, published July 2026 and checked September 2026):

PlanPrice, paid yearlyStorageCustom domainsExtra addresses
Essential€6 per user per month50 GB315
Advanced€8 per user per month500 GB1030
Unlimited€12 per user per month1,000 GBNo limit listed30

All three plans include an administration console with multiple admin roles, password resets and a "sign in as user" option, plus centralized billing (Tuta's business page, checked September 2026). Essential comes with direct email support; Advanced and Unlimited add priority email support within 24 hours on business days. Custom branding and email import are listed on Unlimited only.

The encryption is the product. Tuta encrypts subjects, message bodies, attachments, calendars and contacts on the user's device, and says the only parts of an email it leaves unencrypted are the email addresses and the date (Tuta's encryption page, checked September 2026). Mail to people outside Tuta can go out as a password-protected email, with the password exchanged once per contact. That is a different promise from ordinary hosted email, so it helps to be clear on what data privacy means when you host a client's email, and on why privacy has become part of the B2B reseller pitch, before you recommend either.

Can an MSP Resell or Manage Tuta?

Manage, yes. Resell in the usual sense, not really. Tuta's business page and its July 2026 plan guide describe no reseller, partner or wholesale program, and no WHMCS module or billing integration (checked September 2026). What they do describe is the admin console, so the realistic arrangement is that the client's organization holds the subscription and makes you an admin. You add users, reset passwords, use sign in as user to troubleshoot, and bill the client for that time.

If you would rather put the subscription on your own invoice, Tuta's published pricing gives you no rate below €6, €8 or €12 a user. Any margin is a markup you add on top, and nothing in Tuta's pages connects the account to the billing system you already run. That is workable for one privacy-minded client. It does not grow into a reseller email hosting business, where email is a product line across your whole book rather than a favor for one account.

Atriomail is built for that second case. You pay $1.39 per mailbox per month and set whatever your client pays. If you bill through WHMCS 9, the Atriomail module handles Create, Suspend, Unsuspend, Terminate and Change Package, and clients can add mailboxes and 5 GB storage blocks from the WHMCS client area, within the limits you set, billed as recurring charges at your retail prices. Through the REST API you can also create customer accounts and domains owned by those customers, which keeps email for many client domains manageable from one Atriomail account.

What the Client Gives Up: No IMAP, POP or SMTP

This is the part to explain before the client signs anything. Tuta does not support IMAP, POP3 or SMTP on any plan, and it has said why: IMAP would mean storing mail unencrypted on the user's device, which would break its end-to-end promise (Tuta's desktop client page, checked September 2026). Users read and send mail in Tuta's web app, its free desktop apps for Windows, macOS and Linux, or its mobile apps.

One detail is easy to misread. Tuta released a Thunderbird add-on in February 2026, but it adds buttons that open Tuta's web app in Thunderbird tabs. Tuta states that its mail and calendar cannot be integrated into Thunderbird over IMAP or CalDAV (Tuta's Thunderbird add-on announcement, checked September 2026).

For an MSP, that turns into specific conversations. The Outlook profile a user has had for years, the iPhone Mail account, and anything in the office that sends mail over SMTP, such as a multifunction printer that scans to email, a website contact form or a line-of-business app, all need a different route for that mailbox. None of it is a bug to fix; it is how Tuta is designed. But each item lands on your client support process, so count it before you quote.

Atriomail mailboxes take the opposite approach. They work with Outlook, Thunderbird and the iPhone and Android mail apps over IMAP, POP3 and SMTP with encrypted connections, and every mailbox also has webmail for the browser. The trade is just as explicit: Atriomail does not offer end-to-end encryption, so the protection is on the connection between the mail app and the server, not a Tuta-style promise. The Outlook desktop setup guide shows what connecting a client looks like.

Moving a Client's Mail Into or Out of Tuta

Getting mail into Tuta is improving. Its desktop apps can import email, and among business plans Tuta lists import on Unlimited only (Tuta's business plan guide). In July 2026 Tuta opened a closed beta of One-Click Migration, which connects to an old mailbox over IMAP, keeps the folder structure and syncs new mail one way during the switch. Tuta says it will reach all paid and business plans after the beta, without giving a date (Tuta's One-Click Migration announcement, published 7 July 2026).

If the client is not on Tuta yet and you are still deciding, Atriomail's own migration covers the usual starting points: typical hosting mail on cPanel, Plesk or DirectAdmin servers, and Gmail or Google Workspace with an app password (Google requires 2-Step Verification for app passwords, and a Workspace admin can block them). It has no charge, keeps folders and original dates, and moves mail only, not calendars or contacts. It cannot sign in to Microsoft 365 or Outlook.com mailboxes. The agency playbook for step-by-step email migrations covers sequencing a client book.

Getting mail out of Tuta is the step to plan for on day one. Tuta's desktop apps can export a whole mailbox or single emails to files on the computer (Tuta's desktop client page). Because Tuta has no IMAP, no IMAP-based migration tool can sign in to a Tuta mailbox and copy it across, and that includes Atriomail's: it signs in to the old server with an IMAP password, so it cannot pull mail out of Tuta. A client who leaves Tuta later exports first, and loading those files into a new mailbox is a separate manual job. Scope it, and put it in the quote, before you agree to it.

Moving a book of 50 or more mailboxes? If the mail sits on hosting servers, Gmail or Google Workspace, plan the order with us before you start. Mail already inside Tuta has to be exported by the client first, so talk to us before you quote moving it.

Talk to the team   Read the migration guides

Tuta vs Atriomail for Resellers

The table puts the decision on the rows a reseller actually bills and supports. Tuta cells come from the Tuta pages named above, checked September 2026.

DimensionTuta business plansAtriomail
Price per mailbox€6, €8 or €12 per user per month, paid yearly$1.39 per mailbox per month; you set the resale price
Included storage50 GB, 500 GB or 1,000 GB depending on plan15 GB per mailbox; extra in 5 GB blocks at $0.60 a month (how usage-based storage pricing works)
Reseller or partner programNone described on its business pagesYou pay $1.39 and bill your client at your own price
WHMCSNo module describedv3 module for WHMCS 9: Create, Suspend, Unsuspend, Terminate, Change Package
Standard mail appsNo IMAP, POP3 or SMTP; Tuta's own apps onlyIMAP, POP3 and SMTP with encrypted connections, plus webmail
End-to-end encryptionSubjects, bodies, attachments, calendars and contactsNot offered
Moving mail inEmail import on Unlimited; One-Click Migration over IMAP in closed betaIMAP migration with no charge from hosting mail, Gmail and Google Workspace (app password); not Microsoft 365
BrandingCustom branding listed on UnlimitedPaid white-label add-on (one-time setup fee plus monthly fee): your product name and favicon on the panel on your hostname; some layers stay neutral
SupportEmail support; priority email within 24 hours on business days on Advanced and UnlimitedBusiness hours: email, phone, and live chat in the panel

Read the rows as a fork, not a scorecard. Tuta takes the encryption row outright, and its plans list far more storage. Atriomail takes the rows that decide whether email can be a product line for you: a price you set, the mail apps clients already use, and per-mailbox pricing you can bill from the WHMCS client area.

When Tuta Makes Sense

  • The client has a real confidentiality need. A law firm, a newsroom or an advocacy group that does not want its email provider able to read message content should look at end-to-end encryption, and Atriomail does not offer it.
  • Every user is comfortable in Tuta's apps, and nothing in the office depends on Outlook, phone mail apps or sending over SMTP.
  • The client wants encrypted calendars and contacts in the same service as their mail.
  • You are happy to earn from admin and support time rather than from the subscription itself.

If the request comes from a compliance worry rather than a real threat model, check what the client is actually obliged to do first; these email compliance guidelines for resellers are a sensible starting checklist.

Where Atriomail Fits

For most of a reseller's book, the client asking about Tuta wants professional email on their own domain, in the apps they already use, with you as the person they call. That is the case Atriomail is built for, and a 200-mailbox book shows what the choice means for your business.

On Tuta, 200 users on Essential cost €1,200 a month at the paid-yearly price, or €1,600 on Advanced, billed to whoever holds the account. With no reseller program described, your recurring income from that subscription is the markup you add above those prices, or the admin time you charge for.

On Atriomail, the same 200 mailboxes cost you $278 a month (200 × $1.39), each with 15 GB. Resold at $5.00 a mailbox, the client pays $1,000 and you keep $722 a month above wholesale, about 72 percent. That is arithmetic before card fees, support time and any white-label fee. If you want the control panel to show your product name and favicon on your own hostname, white-label is a separate paid add-on with a one-time setup fee and a monthly fee, and the guide to white-label email for agencies covers what branding changes. Plug in your own resale price on the Atriomail pricing page.

So the decision splits cleanly. Put the client with a documented confidentiality need on Tuta, make yourself an admin, and bill for your time. Put the rest of the book on Atriomail: the clients who need Outlook and phone mail apps to keep working, and mailboxes you can provision and bill from WHMCS. There is no contract and no mailbox minimum, so you can start with a single client, and Atriomail support is available during business hours.

Ready to run the 200-mailbox numbers on your own book? Create your Atriomail account, add a client domain, and set your own price per mailbox. The account costs nothing to create; mailboxes are billed from the first one.

Create your account   Work out your margin

Frequently Asked Questions

Can I resell Tuta and earn a margin on it?

Tuta's business pages describe no reseller, partner or wholesale program (checked September 2026). You can hold a client's subscription and re-invoice it with a markup above Tuta's list price, or have the client hold it, make you an admin, and bill for your support time.

Can clients keep using Outlook or the iPhone Mail app on Tuta?

No. Tuta does not support IMAP, POP3 or SMTP on any plan, so standard mail apps cannot connect. Users work in Tuta's web, desktop and mobile apps. The Thunderbird add-on opens Tuta's web app in a tab; it does not connect Thunderbird to the mailbox.

Can Atriomail migrate a client's mail out of Tuta?

No. Atriomail's migration tool signs in to the old server with an IMAP password, and Tuta has no IMAP, so it cannot copy mail out of a Tuta mailbox. The client would export their mail from Tuta's desktop app first. If that is part of a larger move, talk to us before you quote it.

Does Atriomail encrypt email end to end?

No. Atriomail does not offer end-to-end encryption. The recommended mail app settings use encrypted connections (IMAP with SSL/TLS on port 993, SMTP with STARTTLS on port 587), outgoing mail is handed to Amazon SES over an encrypted connection, and signing in to the control panel requires two-factor authentication. For a client who needs end-to-end encryption, Tuta is the better fit.

Can I bill Atriomail mailboxes from WHMCS?

Yes, on WHMCS 9. Download the v3 module from the Plugins page in the Atriomail panel and use a Hosting Account or Reseller Account product. Mailboxes and storage that clients add in the WHMCS client area are billed as recurring charges at your prices, titled "AtrioMail mailboxes". Changes made in the Atriomail panel or through the API do not sync into WHMCS billing.

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