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Trigger personalized postcards, letters, and other physical mail from software.

Email tools that add tracking, templates, and collaboration to your inbox

OpenPGP signing and encryption inside Apple Mail

Compare files, folders, and version-controlled work in a visual diff and merge interface.

Email tracking, campaigns, mail merge, and document tools for Gmail and Outlook.

Ad-free Swiss mailboxes and custom-domain mail administration

Run event-driven CI jobs and GitHub automation from Kubernetes clusters your team operates.

Queue pull requests, retest them against the latest main branch, and merge only after checks pass.

Review text differences and resolve merge conflicts

Compare and merge files across folders

Merge two or three text inputs

Self-hosted mail with per-user OpenPGP or S/MIME storage encryption

Inspect a sample message for deliverability problems

A plugin-based mail client with PGP and S/MIME support

A beta encrypted-mail service within a larger workspace

Encrypted hosted mail with an explicit outside-image limitation

Community mail with PGP, WKD discovery and a choice of webmail

Google's DNS, mail and browser troubleshooting toolbox

Paid private mail with optional encrypted storage and standard protocols

Encrypted mail hosting with aliases and mailbox-import tools

Look up mail routing and investigate server DNS

A command-line mail client that accepts prepared encrypted messages

OpenPGP mailboxes bundled with encrypted file storage

Small private-mail hosting with standard clients and catch-all addresses