# API Migration from Email Checker

Learn how to migrate from the Email Checker API to Emailable.

This information is specifically for users migrating from the Email Checker API.

Please review the following ****breaking changes**** listed below when migrating from Email Checker to Emailable. Our API will remain largely the same and likely require minimal or no changes for most of our users. All endpoints will remain the same unless otherwise stated below. There are no plans to deprecate this API in the future beyond the changes listed here.

Please note that Email Checker API endpoints will only work when using API Keys migrated from Email Checker. Emailable API Keys will not work with Email Checker API endpoints.

## Breaking Changes

**General**

> Rate limits are now ****25 / second / API Key**** for all endpoints. If you need higher rate limits, please contact support.

All endpoints are case-sensitive. Please make sure you're using lowercase endpoints.

### [V1 API](https://www.emailchecker.com/api-documentation-v1/)

#### **Authentication**

Access Control List (ACL) authentication has been removed. If you need to use the API in a public setting, please migrate to the [Emailable API](https://emailable.com/docs/api#security) and use a Public API key.

#### Batch API


``` 
PUT https://upload.emailverifyapi.com/batchapi/v1
GET https://upload.emailverifyapi.com/batchapi/v1
```

These endpoints have been removed. We recommend you switch to the [Emailable Batch API](https://emailable.com/docs/api#verify-a-batch-of-emails), which returns a more comprehensive set of verification data.

#### Usage


``` 
https://api.emailverifyapi.com/api/a/v1?usage=1
```

The following changes will be reflected when requesting your usage:

The ****monthQuota**** and ****monthQuotaRemaining**** fields will now reflect your credit balance, because there are no monthly quotas in Emailable.

### [V3 API](https://www.emailchecker.com/api-documentation-v3/)

#### Authentication

Access Control List (ACL) authentication has been removed. If you need to use the API in a public setting, please migrate to the [Emailable API](https://emailable.com/docs/api#security) and use a Public API key.

#### Real-Time API


``` 
GET https://api.emailverifyapi.com/v3/lookups/jsonp
GET https://api.emailverifyapi.com/v3/lookups/xml
```

JSONP and XML response formats have been removed.

#### Usage


``` 
https://api.emailverifyapi.com/api/a/v1?usage=1
```

The following changes will be reflected when requesting your usage:

The monthQuota and monthQuotaRemaining fields will now reflect your credit balance, because there are no monthly quotas in Emailable.

## Non-Breaking Changes

The following endpoints should function exactly as they did prior to the migration, except for the non-breaking changes listed below.

If you encounter any differences that are not documented here, please email [api-bugs@emailable.com](mailto:api-bugs@emailable.com) with a detailed explanation of the difference. Please include the full request and response, including all headers and all information necessary for our team to replicate the issue.

### [V1 API](https://www.emailchecker.com/api-documentation-v1/)

#### Real-Time API


``` 
GET https://api.emailverifyapi.com/api/a/v1
```

The ****emailAddressSuggestion**** key will return a suggestion if one is available, regardless of whether the ****correct**** parameter is sent in the request.

### [V3 API](https://www.emailchecker.com/api-documentation-v3/)

#### Real-Time API


``` 
GET https://api.emailverifyapi.com/v3/lookups/json
```

The**** suggestion**** key returns a suggestion if one is available, regardless of whether the **correct** parameter is included in the request.