ArchiviaProEmail Clients & ArchivingArchivia is a commercial, Swiss-hosted email archive for former employees and active mailboxes, with search, retention, legal holds and open-format export.CommercialWeb platformPaidViews · 7 daysTop 10%
Email Clients & Archiving
Desktop and web email clients, AI inbox assistants and email archiving services.
12 results in Email Clients & Archiving
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ArchiviaProEmail Clients & ArchivingArchivia is a commercial, Swiss-hosted email archive for former employees and active mailboxes, with search, retention, legal holds and open-format export.CommercialWeb platformPaid19 views
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BillionMailMarketing & SEOAGPL-licensed mail server and newsletter platform for Linux. Docker Compose deploys Postfix, Dovecot, Rspamd, Roundcube and a Go console for domains, contact lists, campaign tasks, a transactional sending API and delivery analytics.Open sourceSelf-hostedViews · 7 daysTop 16%
Flectar MailEmail Clients & ArchivingFlectar Mail is an open-source email client for Windows, macOS, Linux, and Android. It combines mail, calendars, contacts, and files with offline access to synced data, but remains an alpha release.Open sourceSoftwareViews · 7 daysTop 29%
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listmonkMarketing & SEOAGPL-licensed newsletter and mailing list manager that runs as one Go binary with PostgreSQL. It handles opt-in lists, SQL segmentation, templated campaigns, a transactional mail API, bounce processing, analytics and SMS or push messengers.Open sourceSelf-hostedViews · 7 daysTop 29%
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Proton WebClientsEmail Clients & ArchivingProton's public monorepo for its web clients (Mail, Calendar, Drive, Docs, Pass, VPN account, Wallet, Lumo, Meet) and Electron or Tauri desktop apps. GPL-3.0, but the clients need Proton's closed backend, so it is not a self-hosting kit.Open sourceWeb platformFreemiumViews · 7 daysTop 16%
Thunderbird for AndroidEmail Clients & ArchivingThunderbird for Android, formerly and still alongside K-9 Mail, is an Apache 2.0 email app for IMAP and POP3 accounts with a unified inbox, OpenPGP through OpenKeychain, QR settings import and Play, F-Droid and APK installs.Open sourceSoftwareViews · 7 daysNo views in 7 days
Tuta MailEmail Clients & ArchivingTuta Mail (formerly Tutanota) is an encrypted email, calendar and contacts service from Tutao GmbH in Hanover. Its web, desktop and mobile clients are GPLv3 on GitHub; the server is closed and there is no IMAP.Open sourceWeb platformFreemiumViews · 7 daysNo views in 7 days
Twake MailEmail Clients & ArchivingAGPL-3.0 email client from LINAGORA built with Flutter. It reads mail over JMAP instead of IMAP, ships Android and iOS apps and a Docker web image, and adds team mailboxes, rules, OIDC login and Twake Workplace integration.Open sourceSelf-hostedFreemiumViews · 7 daysTop 7%
UnInboxEmail Clients & ArchivingUnInbox is an open-source email platform for teams: shared and personal spaces, per-conversation workflow statuses and extra addresses, as a hosted service with free, Pro and Enterprise plans. Self-hosting guidance is limited.Open sourceWeb platformFreemiumViews · 7 daysTop 29%
Shortlists for Email Clients & Archiving
Explore collections with tools relevant to this category, grouped by deployment, source model or workload.
Open-source IT tools →
11 matching tools from this category
Self-hosted IT tools →
5 matching tools from this category
IT tools with an API →
4 matching tools from this category
How to choose email clients & archiving tools
Email clients and archiving tools handle the mailbox side of communication: reading and sending mail across accounts, automating triage with rules or AI assistants, and preserving messages for search, retention and legal holds. Clients focus on the daily inbox experience on desktop, web or mobile, while archives capture mail from active and former employees into a separate, tamper-resistant store. Mail servers and transactional email services handle delivery and are covered elsewhere.
Who uses these tools
- Professionals managing several busy mailboxes
- IT admins handling leaver mailboxes and retention
- Compliance officers answering legal discovery requests
Capabilities to compare
- Unified inbox across IMAP and hosted accounts
- Rules, snoozing, scheduling and templates
- AI drafting, summaries and follow-up tracking
- Retention policies, legal holds and audit trails
- Full-text search and open-format export
Operating considerations
- AI assistants need read access to all mail
- Archive hosting location and jurisdiction
- Storage growth for long retention periods
- Export formats that survive a vendor change
Selection checklist
- Confirm which account types and authentication methods the client supports, including OAuth sign-in for hosted mailboxes.
- Check where an AI inbox assistant processes message content and whether that content is used for training.
- For archiving, map retention periods to your legal obligations and test a legal hold on a sample mailbox.
- Run a test export and verify that attachments, headers and folder structure survive intact.
What belongs in this category: A product qualifies when it gives people an interface to read, organise or draft email, or when it captures and retains mailbox content for search and compliance, rather than running the mail server itself.
Email Clients & Archiving on iThub in figures
iThub lists 12 tools in Email Clients & Archiving. 11 of 12 are open source, 5 of 12 can be self-hosted, 11 of 12 have a free, freemium or open-source pricing model and 4 of 12 offer an API.
- Tools listed
- 12
- Open source
- 11
- Self-hostable
- 5
- Free to start
- 11
- With an API
- 4
- Web app
- 9
- Desktop app
- 6
Recently added: Tuta Mail, Thunderbird for Android, UnInbox, Twake Mail
Typical use cases
- Managing work and personal accounts in one client
- Drafting routine replies with an AI assistant
- Keeping a departed employee's mailbox searchable without a licence
- Producing messages for an audit or legal request
Trade-offs to model
- Self-hosted AI email assistants keep message content under your control, while hosted ones are quicker to set up and maintain.
- Archives built into the mail platform are convenient, whereas a separate archive survives a platform migration or account deletion.
Common mistakes
- Deleting leaver mailboxes to save licences before their content is archived and retention rules are confirmed.
- Granting an AI inbox tool full mailbox access without reviewing its data processing terms.
File sharing, sync and management →Notes and knowledge management →Browse all email clients and archiving tools →
Decision resources
Continue the technical evaluation
Use the resources that match your decision stage. Profile data and linked sources were refreshed through November 11, 2026.
Editorial guides
Archivia: Email Archiving for Microsoft 365 Teams →0 tools selectedCompare selected