Aster Mail vs Mailo

Aster Mail is an open-source email service with a free plan and paid tiers. It supports web, desktop, and Android, with an iOS beta on TestFlight; native desktop apps are available for Windows, Mac, and Linux. Aster Bridge lets desktop mail apps connect over IMAP and SMTP. Mail between Aster accounts is automatically end-to-end encrypted and uses hybrid post-quantum encryption. The free plan costs nothing and includes 10 GB of encrypted storage, five aliases, one custom domain, two mail rules, attachments up to 25 MB per message, and Bridge access; no trial or credit card is required. Aster says its email is hosted in Germany under EU privacy law and that it does not use ads, inbox scanning, or AI on the inbox. QuickSwitch imports mail from Gmail, Outlook, Yahoo, Proton, and other IMAP providers. MBOX mailbox export is free on every plan. Paid plans start at $2.42 a month, billed annually, with the final amount determined at checkout. Aster Mail was founded in 2026 and is headquartered in Orlando, Florida, United States.

Mailo is an email service available on the web and through Android and iOS apps, with calendar, address book, cloud and sharing services. Its free plan includes 1 GB of email storage, 500 MB for documents and photos, five aliases, advertising banners, and IMAP4 and EAS access. Premium is listed at €1.50 per month and expands the mailbox to 20 GB, with 5 GB for a virtual disk and photo albums and up to 100 aliases. Premium also removes webmail advertising, supports attachments up to 50 MB and provides POP3 or IMAP4 access. It includes a lifetime email address, and the offer can be activated for one to five years. Mailo says it stores data in France, does not use or sell it, and does not read messages; listed features also include end-to-end encryption and custom domains. Migration tools can retrieve messages, contacts and events from an old provider and set up forwarding. Mailo says it offers responsive, personalized support in English.