Our API to verify e-mail addresses is really easy to use with Objective-C

 

// These code snippets use an open-source library. http://unirest.io/objective-c
NSDictionary *headers = @{@"X-Mashape-Key": @"YOUR-API-KEY", @"Accept": @"application/json"};
UNIUrlConnection *asyncConnection = [[UNIRest get:^(UNISimpleRequest *request) {
   [request setUrl:@"https://mailcheck.p.mashape.com/?domain=EMAIL-OR-DOMAIN"];
   [request setHeaders:headers];
}] asJsonAsync:^(UNIHTTPJsonResponse *response, NSError *error) {
   NSInteger code = response.code;
   NSDictionary *responseHeaders = response.headers;
   UNIJsonNode *body = response.body;
   NSData *rawBody = response.rawBody;
}];

This will return a JSON-array with information about the domain, and if you should block it or not.

 

For example, say you want to verify the e-mail address [email protected], to see if you should allow that e-mail to register an account, or sign up for your newsletter.

Your code would look something like this:

// These code snippets use an open-source library. http://unirest.io/objective-c
NSDictionary *headers = @{@"X-Mashape-Key": @"YOUR-API-KEY", @"Accept": @"application/json"};
UNIUrlConnection *asyncConnection = [[UNIRest get:^(UNISimpleRequest *request) {
   [request setUrl:@"https://mailcheck.p.mashape.com/[email protected]"];
   [request setHeaders:headers];
}] asJsonAsync:^(UNIHTTPJsonResponse *response, NSError *error) {
   NSInteger code = response.code;
   NSDictionary *responseHeaders = response.headers;
   UNIJsonNode *body = response.body;
   NSData *rawBody = response.rawBody;
}];

You can of course just send it as a regular GET-request to that URL also, in your favorite way, as long as you have the API-key in the header.

You will receive a JSON response, telling you if this is a disposable e-mail to block, or if there are other issues with the domain:

{
   "valid": true,
   "block": true,
   "disposable": true,
   "domain": "cocovpn.com",
   "text": "Disposable e-mail",
   "reason": "Heuristics (1b)",
   "mx_host": "mail56.cocovpn.com",
   "mx_info": "Using MX pointer mail56.cocovpn.com from DNS with priority: 0",
   "mx_ip": "109.236.84.18"
}

This will tell you if you should block the domain cocovpn.com or not, and the reason to why the API thinks so (disposable e-mail, etc).

To get started for free, and get an API key, click here!