Simple, scalable pricing for your Email, Contacts, and Calendar APIs
One universal API for email, contacts, and calendar. Start with a free plan and scale with our simple pricing as your application connects more accounts.
Every plan gets the same infrastructure, support, and security. You only choose which APIs to unlock.
Free
Build and test without spending a cent.
Email API
Calendar API
Contacts API
Calendar & Contacts
Access calendar and contact APIs.
- Email API
Contacts API
Calendar API
Full Platform
Access all three APIs—email, calendar and contacts.
Email API
Contacts API
Calendar API

How much will you pay?
Enter the number of accounts
Each email address synced or hosted in Mail360 counts as one account
per month, billed annually
per month, billed annually
Why should you use Mail360 for your application?
Vibe coding ready
Mail360 comes ready to be plugged into your vibe-coded application.
Free testing, always
All three APIs are available in sandbox at no cost. You only pay when you go live.
Universal provider support
One API to connect them all. No more per-provider integrations.
Security-first
Built on decades of experience and infrastructure, with SPF/DKIM/DMARC, data encryption, and enterprise compliance.
Full technical support
Extensive docs and a dedicated support team is available throughout your build phase, at no extra cost.
Faster time to market
Skip the infrastructure build. Mail360 handles sync, auth, and deliverability out of the box.
Frequently asked questions
Zoho Mail360 is a universal API platform that provides developers full email, contacts, and calendar capability for their applications without having to build it from scratch. Developers can connect any email, calendar, or contact book of their choice with Mail360, or host an account with Mail360 and access the APIs.
A connected account is any email address synced or hosted with Mail360. An account could have access to email, calendar, or contact APIs based on the plan chosen. Essentially, each authenticated user in Mail360 counts as one connected account.
Accounts hosted with other providers can be connected to Mail360 using IMAP or sync connectors. Alternatively, developers can also host the mailboxes with Mail360 by adding a domain of their choice.
The only difference is which APIs are included. The Free plan gives access to all APIs in sandbox. Contacts and Calendar unlocks the Calendar and Contacts APIs in production. The Full Platform unlocks all three—Email, Calendar, and Contacts—in production. Everything else (infrastructure, support, security) is identical.
We accept payment via Visa, MasterCard, American Express, and PayPal. We also accept payment via NEFT bank transfers. For more details, please contact sales@zohocorp.com.
ZeptoMail works on a pay-as-you-go system. This means there are no long-term contracts that keep you locked in. You can choose to buy more credits or cancel the account as needed. Credits remaining at the time an account is cancelled will not be refunded.
Yes. Enterprise customers and high-volume platforms receive custom pricing and volume discounts. Contact presales@zohomail360.com.