How to Migrate from Gmail to Proton Mail

This guide explains how to move a personal Gmail account into Proton Mail using Easy Switch, a built-in migration tool that imports emails (with attachments), calendars, and contacts and can connect your Gmail account so you can send and receive Gmail messages from inside Proton Mail. It highlights the key privacy behavior: messages sent from your connected Gmail address to Proton users (including @proton.me, custom domains on Proton, or Gmail addresses that are also connected) are end-to-end encrypted; messages to non‑Proton recipients are routed through Google and are not end‑to‑end encrypted. The recommended setup walks through Settings → Import via Easy Switch → Google → Connect to Gmail, requires granting full Google permissions (Select All), and defaults to importing recent messages up to 80% of your Proton storage (you can later import more).

The guide details starting imports via More Import Options, choosing EMAILS/CONTACTS/CALENDARS, and customizing imports: change labels, limit time range (all or last 1/3/6/12 months), exclude folders, merge or create calendars, and import up to 10,000 contacts. It notes safeguards: repeated imports won’t duplicate messages, subfolders are created, and conflicts (folder name length >100 chars, >2,000 folders, or name collisions) may require manual customization. Limitations include no current support for Google Workspace/custom domains or Gmail addresses used to sign up through Proton VPN/Pass; connection status appears under Import via Easy Switch or Identity and Addresses.