Growth · alternatives · 2026
24 alternatives to Aster Mail
Quantum-safe, private end-to-end encrypted, zero access mail
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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Get free email forwarding for custom domains. Send & receive as [email protected] with unlimited aliases, 10GB storage, IMAP/POP3/SMTP & 100% open-source security. Trusted by 500K+ users. Setup in 2 minutes.
2023 · forwardemail.net · its alternatives →
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ProtonMail▲199End-to-end encrypted email - now on iOS & Android
2016 · proton.me · its alternatives →
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Your email, your server, your keys so you're not locked out
Aug 2026 · github.com · its alternatives →
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ASTIS Mail▲12Encrypt Gmail/M365 mail, calendar & attachments
Jun 2026 · mail.astis.io · its alternatives →
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Create unlimited email aliases for free. Protect your real email from spam by using a different address for each service. Privacy friendly, anonymous replies.
2019 · anonaddy.com · its alternatives →
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- 9TP
Hi HN, we are the developers from Tuta (formerly Tutanota), the German end-to-end encrypted email provider, and we recently released the world's first post-quantum encryption for email. We have included a full technical write-up of the cryptography involved in these changes and we have released it for open public review. This document specifies TutaCrypt, a protocol designed for hybrid email encryption in Tuta Mail. The protocol combines a classical Elliptic-Curve-Diffie-Hellman key exchange with a post-quantum KEM. The goal is to replace the usage of RSA in Tuta Mail. In the remainder of…
2024 · tuta.com · its alternatives →
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- 12EE
Manage sales and customer relationships directly inside Gmail. Streak is the CRM your team will actually use—integrated, smart, and loved by 750,000+ users.
2013 · streak.com · its alternatives →
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Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.
2014 · protonmail.ch · its alternatives →
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Maildrop provides free disposable e-mail addresses for use in web forms, app signups, or any other place you'd like to protect your privacy.
2013 · maildrop.cc · its alternatives →
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ProtonMail▲144Encrypted email, made simple. Now open to everybody.
2015 · proton.me · its alternatives →
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- 19EE
Hi HN, we have recently completed a research project on how to encrypt emails with post-quantum secure algorithms as well as Forward Secrecy. We'd love to hear your feedback and discuss technical issues. The paper can be found here: https://eprint.iacr.org/2021/875
2021 · its alternatives →
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Completely private chat email, w/ encrypted email messaging
2017 · spikenow.com · its alternatives →
- 21EI
2014 · diafygi.github.io · its alternatives →
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1SecMail▲112Free disposable email that actually arrives in real time
2025 · tmaily.com · its alternatives →
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Permissioned and auditable secure file and document sharing
2023 · sendsecurely.io · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →