How many users do you have?

1,0003,0005,000
a lot more!

First 5000 mailboxes

FREE

Check out Premium Service below (you'll like it)

Ready to start?Create your account and start connecting email data to your app within minutes.Upgrade when you need to query more than 5000 mailboxes, there's no time limit on your free key. Get your API keyno credit card required

Built-in Features on All Mailboxes

Complete and easy access Quickly get metadata information about messages, attachments and contacts in the account. Fetch message bodies and attachments as needed.
API calls We don't charge per API call but we do monitor for excessive usage or abuse (intentional or not!). Each key can make up to 5000 API calls/day for each 100 mailboxes connected to it.
Sync frequency Any API call on a mailbox will trigger a sync of our metadata index if the last one was more than 5 minutes ago.

You can also explicitly trigger a sync at any time and these calls are not metered.
WebHooks Get rule-based notifications pushed to your app through HTTP POST requests.
 

Enjoy Premium Support, Eliminate Limits

UNLIMITED mailboxes UNLIMITED API calls
Priority help desk Backed by an SLA

Context.IO Startup Program

Are you a startup out to change the way we interact with email? We want to help you get your Context.IO powered product in the hands of a massive user base as fast as possible and lack of funds should not be stopping you. That’s why we just launched a $1 Million Context.IO Fund. Read more about it here