addy.io vs OPC Mail

addy.io creates email aliases that forward messages to a real inbox, allowing users to give out aliases instead of their main address. An alias can be deactivated to silently discard new mail or deleted so senders receive a bounce. Users can connect a domain they control and set catch-all controls. Paid features allow replying to forwarded messages or starting messages from an alias without revealing the real address. Users can add GPG/OpenPGP public keys for recipients to encrypt forwarded mail, with an option to hide and encrypt the subject. The maker lists free open-source apps for iOS and Android, browser extensions for several browsers, and an API for automating aliases and other account resources. Self-hosting instructions and two-factor authentication are also available. The free plan includes unlimited standard aliases, but sets limits for shared-domain aliases, recipients, available alias domains, and monthly bandwidth. Paid plans start at $1 a month billed yearly; higher tiers list more recipients and custom domains, among other additions.

OPC Mail is an email alias service for a domain you own. After you point the domain’s MX records to Cloudflare in a one-time DNS change, any prefix at that domain works immediately, without creating aliases in advance. This lets one-person companies use separate addresses for service registrations, newsletters, online shopping, and beta testing or QA while keeping a main inbox organized. The service says it has no tracking or ads, does not sell user data, and does not use AI to read mail. OPC Mail describes itself as fully open source and links to its GitHub source code. It reports average delivery of 2–5 seconds using Cloudflare Edge and a global CDN. The Free plan costs nothing and includes unlimited aliases per domain. An iOS app checks the inbox; web access is also listed.