Aster Mail vs Mailo

Aster Mail8.9Visit Mailo7.9Visit

Higher score Aster Mail #3 in Secure Email Providers 8.9/10 Free plan Free plan✓ 2 of 3 features Visit Aster Mail

vs

Mailo #8 in Secure Email Providers 7.9/10 Free plan Free plan✓ 2 of 3 features Visit Mailo

• Aster Mail fits best

  Feature-rich secure email at a low price

• Mailo fits best

  High-storage freemium email users

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Side by side

Feature	Aster Mail 8.9/10 Visit ↗	Mailo 7.9/10 Visit ↗
At a glance
Editor score	8.9	7.9
Ranking	#3 in Secure Email Providers	#8 in Secure Email Providers
Best for	Feature-rich secure email at a low price	High-storage freemium email users
Pricing model	Free plan + paid	Free plan + paid
Starting price	$2.42/user/mo	€1.50/user/mo
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Desktop, Mobile	Cloud, Mobile
Platforms	Web, Windows, macOS, Linux, iOS, Android	Web, iOS, Android
Features Aster Mail 2/3 · Mailo 2/3
End-to-end encryption	✓	✓
Custom domain	✓	✓
Encrypted calendar	—	Not checked yet
Specs
Mailbox storage	50 GB (best)	20 GB
Email aliases	15 aliases	100 aliases (best)
Mail protocol support	Bridge	Imap_smtp
Our review
Pros	Free plan includes 10 GB encrypted storage and five aliases OpenPGP, tracker blocking, import, export, and mail rules Web, desktop, and mobile apps plus Aster Bridge support	20 GB mailbox storage on the Premium plan Up to 100 aliases and custom domain email addresses PGP, two-factor authentication and mail-client access
Cons	Encrypted calendar is still in active development Server code is not public, despite open-source apps and cryptography Founded in 2026, so long-term maturity evidence is limited	The free plan includes advertising banners Mailo Free provides only 1 GB of mailbox storage The positioning emphasizes limited platform coverage and no integrations
Our verdict	Aster Mail is an encrypted email service for privacy-conscious individuals, families, and teams. Its core design combines local encryption on supported devices with a zero-access encrypted mailbox architecture. Users can access mail… Read the review →	Mailo is a French email and cloud service for individuals, families, organizations and professionals. It combines webmail with calendars, address books, document and photo storage, sharing tools, mobile access and synchronization through… Read the review →

Strengths and trade-offs

• Aster Mail — where it wins

  • Free plan includes 10 GB encrypted storage and five aliases
  • OpenPGP, tracker blocking, import, export, and mail rules
  • Web, desktop, and mobile apps plus Aster Bridge support

  Where it doesn't

  • Encrypted calendar is still in active development
  • Server code is not public, despite open-source apps and cryptography
  • Founded in 2026, so long-term maturity evidence is limited

• Mailo — where it wins

  • 20 GB mailbox storage on the Premium plan
  • Up to 100 aliases and custom domain email addresses
  • PGP, two-factor authentication and mail-client access

  Where it doesn't

  • The free plan includes advertising banners
  • Mailo Free provides only 1 GB of mailbox storage
  • The positioning emphasizes limited platform coverage and no integrations

• Aster Mail8.9/10 · Free plan

  A low-cost secure email service with encryption, aliases, domains, and broad device support.

  Visit Aster MailFull verdict →
• Mailo7.9/10 · Free plan

  A generous free tier with strong alias, storage and protocol support.

  Visit MailoFull verdict →