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Head-to-head · Secure Email Providers

Tuta Mail vs Runbox

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Tuta Mail #2 in Secure Email Providers 9.2/10 Free plan Free plan✓ 3 of 3 features Visit Tuta Mail
Runbox #7 in Secure Email Providers 8.0/10 30-day trial Free trial✓ 2 of 3 features Visit Runbox

Tuta Mail leads on 2 checks, Runbox on 1, and 3 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreTuta Mail · 9.2/10
  • Free planonly Tuta Mail
  • Free trialonly Runbox
  • Most featuresTuta Mail · 3 of 3

Tuta Mail scores higher on our rubric for secure email providers: 9.2 against 8.0 out of 10; our editors rank them #2 and #7.

Tuta Mail offers free plan; Runbox doesn't. Tuta Mail leads on mailbox storage: 20 GB versus 2 GB. Runbox leads on email aliases: 100 aliases versus 15 aliases. On mail protocol support, Runbox gives you Imap_smtp where Tuta Mail offers None.

Tuta Mail is the better fit for users prioritizing deep encryption and privacy. Runbox is the better fit for custom-domain users wanting mature private hosting.

  • Tuta Mail fits best

    Users prioritizing deep encryption and privacy

  • Runbox fits best

    Custom-domain users wanting mature private hosting

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Tuta Mail 9.2/10 Visit ↗ Runbox 8.0/10 Visit ↗
At a glance
Editor score 9.2 8.0
Ranking #2 in Secure Email Providers #7 in Secure Email Providers
Best for Users prioritizing deep encryption and privacy Custom-domain users wanting mature private hosting
Pricing model Free plan + paid Paid
Starting price €3/user/mo €1.66/user/mo
Free plan ✓ (best) —
Free trial — 30 days
Deployment Cloud, Desktop, Mobile Cloud, Mobile
Platforms Web, Windows, macOS, Linux, iOS, Android Web, iOS, Android
Features Tuta Mail 3/3 · Runbox 2/3
End-to-end encryption ✓ ✓
Custom domain ✓ ✓
Encrypted calendar ✓ (best) Not checked yet
Specs
Mailbox storage 20 GB (best) 2 GB
Email aliases 15 aliases 100 aliases (best)
Mail protocol support None Imap_smtp
Our review
Pros
  • Encrypts email content, subjects, attachments, calendars, and contacts
  • Open-source clients for web, desktop, Android, and iOS
  • Free plan plus paid custom-domain and offline-access options
  • Custom domains with unlimited aliases on your own domain
  • IMAP, POP, SMTP, CalDAV and CardDAV support
  • Filtering, encryption, two-factor authentication and import tools
Cons
  • No IMAP or other mail-protocol access
  • No listed integrations
  • The free plan includes 1 GB storage and one calendar
  • The Micro plan provides only 2 GB of email storage
  • There is no free plan
  • Listed plan prices require annual billing
Our verdict

Tuta Mail is a secure email service for individuals, families, businesses, journalists, activists, and organizations that prioritize privacy. It provides web, desktop, and mobile apps across Windows, macOS, Linux, iOS, and Android.…

Read the review →

Runbox is a Norway-based private email service for individuals, families and teams. It combines webmail with custom-domain hosting, aliases, spam and virus filtering, two-factor authentication, encrypted connections, and access through…

Read the review →
  1. Tuta MailSecure Email Providers 9.2Free plan
  2. RunboxSecure Email Providers 8.030-day trial

Strengths and trade-offs

  • Tuta Mail — where it wins

    • Encrypts email content, subjects, attachments, calendars, and contacts
    • Open-source clients for web, desktop, Android, and iOS
    • Free plan plus paid custom-domain and offline-access options

    Where it doesn't

    • No IMAP or other mail-protocol access
    • No listed integrations
    • The free plan includes 1 GB storage and one calendar

  • Runbox — where it wins

    • Custom domains with unlimited aliases on your own domain
    • IMAP, POP, SMTP, CalDAV and CardDAV support
    • Filtering, encryption, two-factor authentication and import tools

    Where it doesn't

    • The Micro plan provides only 2 GB of email storage
    • There is no free plan
    • Listed plan prices require annual billing

More comparisons

All secure email providers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update