Top 3 Unlimited-Mailbox Email Hosts in 2026

Use this 2026 ranking to compare the three email hosting plans that list unlimited mailboxes, then choose based on your sending needs, storage and security requirements. The daily sending limits and listed privacy and account-security features separate these picks.

How we ranked these email hosts

We focused on the features that change how useful an unlimited-mailbox plan is in practice: its stated daily sending limit, whether it lists two-factor authentication (2FA), and whether it lists GDPR compliance. A large mailbox count does not tell you how much mail you can send, so we give the sending cap particular weight. We also looked at storage, domain support, migration and backups to show what you gain or give up with each plan.

Purelymail ranks first with a stated limit of 3,000 messages per day and 2FA. Migadu lists GDPR compliance but caps sending at 20 messages a day. MXroute does not state a daily sending limit in the listed features, so we do not treat that as unlimited capacity; it also lists neither 2FA nor GDPR compliance. We rank on listed specifications and features rather than lab tests. Check the provider’s current terms for any sending rules that matter to your workflow.

1. Purelymail Simple by Purelymail

Purelymail Simple is the strongest fit here if you need unlimited mailboxes and expect to send a substantial volume of email. The plan lists a daily limit of 3,000 messages, unlimited users and unlimited custom domains. That combination gives a small company room to create separate addresses for people, teams or projects without a listed cap on mailbox count.

It also includes unlimited storage per user, a catch-all address, filters and rules, and a migration tool. IMAP, POP3 and SMTP are supported, as are SPF, DKIM and DMARC. TLS protects mail in transit, and the plan lists encryption at rest. 2FA is included, alongside spam and virus filtering, calendars and contacts. The provider lists a free trial. Support is by ticket, not 24/7, and the data location is the United States.

• Strengths: Unlimited mailboxes, users, domains and per-user storage; a 3,000-message daily sending limit; 2FA; migration import; catch-all; and encryption in transit and at rest.
• Limits: Support is ticket-based and is not listed as available 24/7. The data location is the United States, and GDPR compliance is not listed among the features.

Choose it if you want room for many addresses and a much higher stated sending allowance than the other ranked plans. If your organisation requires a provider that explicitly lists GDPR compliance, compare that requirement carefully: this plan does not make that claim in its listed features.

2. Migadu Micro by Migadu

Migadu Micro is the privacy-conscious option in this ranking: it lists GDPR compliance and places its data in France. It supports unlimited mailboxes, aliases and custom domains, but its daily sending limit is 20 messages. That is a small allowance for routine business correspondence, so check that it matches your expected volume before choosing it.

Each user gets 5 GB of storage. The plan includes a catch-all address, an admin panel, filters, an autoresponder and a migration tool. It supports IMAP, POP3 and SMTP, and lists SPF, DKIM and DMARC. Back-up and restore are included, along with spam and virus filtering. Encryption is listed for mail in transit; encryption at rest and 2FA are not listed. Migadu offers email and ticket support, plus a free trial.

• Strengths: Unlimited mailboxes, aliases and domains; GDPR compliance listed; French data location; backup and restore; admin panel; migration import; and a catch-all address.
• Limits: The daily sending limit is 20 messages, and storage is 5 GB per user. The listed encryption covers data in transit only; 2FA is not listed.

Pick Migadu if GDPR compliance, backup and an EU data location matter more to you than sending volume. It can suit a setup with many low-traffic addresses, such as separate contact points for projects, but the 20-message limit makes it a poor match for frequent outgoing mail.

3. MXroute Small by MXroute

MXroute Small offers unlimited mailboxes, aliases and domains, with 10 GB of storage per user. Its listed features include catch-all, a management panel, backup and restore, filters, and spam and virus filtering. It supports IMAP, POP3 and SMTP, and lists SPF, DKIM and DMARC. The maximum attachment size is 50 MB, which is useful to check if your team regularly sends larger files.

Unlike the first two picks, MXroute does not list a daily sending limit, so you cannot compare its sending allowance from the features shown here. An unstated cap should not be read as unlimited sending; ask the provider about current limits before moving a high-volume workflow. The plan lists no migration import, no free trial and no 2FA. It also lists GDPR compliance as no. Support is by ticket, and calendars and contacts are included.

• Strengths: Unlimited mailboxes, aliases and domains; 10 GB per user; backups; catch-all; an admin panel; and support for standard mail protocols and authentication records.
• Limits: GDPR compliance and 2FA are listed as unavailable. No migration tool or free trial is listed, and there is no stated daily sending limit to compare.

Consider MXroute if its mailbox and domain flexibility, storage and backup features fit your setup, and you are comfortable confirming sending rules directly. It is a weaker match if your organisation requires listed GDPR compliance or 2FA.

Why two other providers missed the list

StartMail Business lists unlimited users, but it does not list an unlimited mailbox count, so it does not meet this page’s specific criterion. Infomaniak Mail Service lists up to 1,000 mailboxes, along with unlimited storage per user and a 500-message daily sending limit, but 1,000 is not unlimited.

How to choose an unlimited-mailbox plan

Start with the number of messages you send, not the number of addresses you can create. If you send several hundred messages a day, Purelymail’s listed 3,000-message cap is the clearest fit on this page. Migadu’s 20-message cap is suited to light sending, while MXroute’s limit is not stated here. Ask MXroute for its current sending rules before relying on it for business or automated email.

Next, separate mailbox count from storage. Unlimited mailboxes do not mean unlimited storage on every plan: Migadu lists 5 GB per user and MXroute lists 10 GB. Purelymail lists unlimited storage per user. Estimate how much mail each person needs to retain, especially if you keep attachments or archives in the mailbox.

Check security and compliance against your own requirements. Migadu explicitly lists GDPR compliance, while MXroute lists that feature as no; Purelymail does not list a GDPR flag here. Purelymail lists 2FA, while MXroute lists no 2FA and Migadu does not list it. If either item is mandatory, confirm the provider’s current documentation rather than treating an unlisted feature as included.

Finally, plan the move. Purelymail and Migadu list migration tools; MXroute does not. All three list catch-all addresses and unlimited custom domains, which can help you organise incoming mail across brands or teams. In 2026, make a short checklist of addresses, storage, expected daily sending and required security controls before you switch, then confirm any points the plan does not specify.