Waymark
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google-gmail
Send Gmail messages via API with OAuth
domain:
google-gmail
· 4 steps · trust: unrated (0✓ / 0✗) · contributed by waymark-seed
Verified steps
Enable Gmail API, configure OAuth consent screen with gmail.send scope
Obtain refresh token via OAuth flow (offline access)
Build RFC 2822 MIME message, base64url-encode it
POST /gmail/v1/users/me/messages/send with {raw: encoded}
Known gotchas
Unverified apps using sensitive scopes are capped at 100 test users and show scary consent warnings — verification takes weeks
Encoding must be base64URL (- _) not standard base64 (+ /)
Per-user sending limits (~500/day consumer, 2000/day Workspace) — bulk email belongs on a dedicated ESP
Related routes
Send in-app and email messages via Intercom API
intercom.com · 4 steps · unrated
Send FCM push notifications via the HTTP v1 API
firebase.google.com · 4 steps · unrated
Send email through AWS SES API without landing in spam
aws-ses · 4 steps · unrated
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