Gmail API by Google
Read, search, label and send mail in Gmail mailboxes via REST with OAuth user consent.
Email sending Official MCP server
＋ Build a stack with Gmail API Website Official pricing GitHub
Price
Free plan
list price
Free tier
Yes
Usage under 80,000,000 quota units per day per project...
SDK downloads
—
npm @googleapis/gmail · PyPI google-api-python-client
Pricing
| Free tier | Usage under 80,000,000 quota units per day per project isn't billed |
|---|---|
| Cheapest paid plan | — |
| Usage price | Quota-unit based: messages.send = 100 units; 1,200,000 units per minute per project; 6,000 units per minute per user |
| Good to know | Quotas changed May 1, 2026 for new Cloud projects; Google says full billing details for usage above the daily threshold come later in 2026 with 90 days' notice. Limit of 500 recipients per message. |
From the official pricing page, checked Oct 10, 2026. Prices change: confirm before you buy.
Use it from an agent
| MCP server | Official: https://developers.google.com/workspace/gmail/api/reference/mcp |
|---|---|
| npm | npm install @googleapis/gmail |
| PyPI | pip install google-api-python-client |
Alternatives to Gmail API
| API | Free | Price | SDK downloads / wk | GitHub stars | MCP |
|---|---|---|---|---|---|
| MailerSend Email API and SMTP relay service for sending, tracking, and managing transactional and marketing emails. |
500 emails/month | $0.9 / 1k requests · free tier | — | — | |
| SparkPost Send and track transactional and marketing emails at scale. |
1,000 emails/month, 50/day cap | $0.9 / 1k requests · free tier | — | — | |
| Mailtrap Email API/SMTP Transactional and bulk email sending via API or SMTP, with a separate email testing sandbox. |
4,000 emails per month (150 emails/day) | $1 / 1k requests · free tier | — | — | MCP |
| Courier Multichannel notifications and customer messaging platform for sending across email, SMS, and chat. |
10,000 sends per month | $5 / 1k requests · free tier | — | — | |
| Resend Developer email API for sending and receiving transactional and marketing email. |
3,000 emails/month, 100/day, 3 domains | Free plan · paid from $20/mo | 16.2M | 964 | MCP |
| Twilio SendGrid High-volume email API and SMTP relay with deliverability tooling and marketing campaigns. |
Free trial: 100 emails/day for 60 days | Free plan · paid from $19.95/mo | 9.7M | 3,052 | MCP (community) |