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Honest comparisons.

Every page below includes a "where they win" column, because they do win at things. Pick tools for the job, not the logo.

Two answers to "who are you?" — a phone-number account versus no account at all.

Both encrypt between iPhones; they differ on Apple Accounts, backups, and verification.

Sealed content on both sides — but only one side skips the metadata harvest.

The same OpenPGP standard, without SMTP's headers, subjects, and archives.

Try CarrierPony

Free. No accounts, no phone numbers, no tracking. Currently in App Review — one email on launch day if you want it.