ProtonMail

Free

• ✓1 GB storage
• ✓1 email address
• ✓150 messages per day

Mail Plus

billed annually

• ✓15 GB storage
• ✓10 email addresses
• ✓Unlimited messages
• ✓Custom domain support

Proton Unlimited

billed annually

• ✓500 GB storage
• ✓15 email addresses
• ✓Includes VPN, Drive, Calendar
• ✓Proton Pass included

Proton Family

billed every 2 years

• ✓3 TB shared storage
• ✓Up to 6 users
• ✓All Proton services

Business

billed annually

• ✓500 GB per user
• ✓15 addresses per user
• ✓10 custom domains
• ✓All Proton services