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ProtonMail
ProtonMail is an end-to-end encrypted email service based in Switzerland. Features include zero-access encryption, self-destructing messages, anonymous sign-up, custom domains, and calendar integration. Built by CERN scientists for privacy-conscious users and businesses.
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Alternatives to ProtonMail
Looking for something similar? Here are the best alternatives.
Zoho Mail is a secure business email hosting service that provides custom domain email addresses with encryption at rest and in transit. It features S/MIME encryption, spam protection, admin console, mobile apps, email retention, eDiscovery, and collaboration streams. Suited for small to mid-sized businesses needing professional, privacy-focused email.
Mailgun is a transactional email API service that enables developers to send, receive, track, and optimize email delivery at scale. It features SMTP relay, real-time email validation, inbox placement testing, and deliverability analytics with ISO and GDPR compliance. Used by over 150,000 businesses including major tech companies.
SendGrid (by Twilio) is a cloud-based email delivery platform for transactional and marketing emails. Features include email API, SMTP relay, email templates, analytics, deliverability tools, and list management. Handles 100B+ emails monthly with a free tier of 100 emails/day.