diff --git a/dist/index.js b/dist/index.js
index a82248d..ed5041e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1,16 +1,16 @@
 (function (global, factory) {
   if (typeof define === "function" && define.amd) {
-    define(["exports", "react", "jsonp", "prop-types"], factory);
+    define(["exports", "react", "jsonp"], factory);
   } else if (typeof exports !== "undefined") {
-    factory(exports, require("react"), require("jsonp"), require("prop-types"));
+    factory(exports, require("react"), require("jsonp"));
   } else {
     var mod = {
       exports: {}
     };
-    factory(mod.exports, global.react, global.jsonp, global.propTypes);
+    factory(mod.exports, global.react, global.jsonp);
     global.index = mod.exports;
   }
-})(this, function (exports, _react, _jsonp, _propTypes) {
+})(this, function (exports, _react, _jsonp) {
   "use strict";
 
   Object.defineProperty(exports, "__esModule", {
@@ -21,228 +21,194 @@
 
   var _jsonp2 = _interopRequireDefault(_jsonp);
 
-  var _propTypes2 = _interopRequireDefault(_propTypes);
-
   function _interopRequireDefault(obj) {
     return obj && obj.__esModule ? obj : {
       default: obj
     };
   }
 
-  function _defineProperty(obj, key, value) {
-    if (key in obj) {
-      Object.defineProperty(obj, key, {
-        value: value,
-        enumerable: true,
-        configurable: true,
-        writable: true
-      });
-    } else {
-      obj[key] = value;
-    }
-
-    return obj;
-  }
+  var _extends = Object.assign || function (target) {
+    for (var i = 1; i < arguments.length; i++) {
+      var source = arguments[i];
 
-  function _classCallCheck(instance, Constructor) {
-    if (!(instance instanceof Constructor)) {
-      throw new TypeError("Cannot call a class as a function");
-    }
-  }
-
-  var _createClass = function () {
-    function defineProperties(target, props) {
-      for (var i = 0; i < props.length; i++) {
-        var descriptor = props[i];
-        descriptor.enumerable = descriptor.enumerable || false;
-        descriptor.configurable = true;
-        if ("value" in descriptor) descriptor.writable = true;
-        Object.defineProperty(target, descriptor.key, descriptor);
+      for (var key in source) {
+        if (Object.prototype.hasOwnProperty.call(source, key)) {
+          target[key] = source[key];
+        }
       }
     }
 
-    return function (Constructor, protoProps, staticProps) {
-      if (protoProps) defineProperties(Constructor.prototype, protoProps);
-      if (staticProps) defineProperties(Constructor, staticProps);
-      return Constructor;
-    };
-  }();
-
-  function _possibleConstructorReturn(self, call) {
-    if (!self) {
-      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
-    }
-
-    return call && (typeof call === "object" || typeof call === "function") ? call : self;
-  }
-
-  function _inherits(subClass, superClass) {
-    if (typeof superClass !== "function" && superClass !== null) {
-      throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
-    }
+    return target;
+  };
 
-    subClass.prototype = Object.create(superClass && superClass.prototype, {
-      constructor: {
-        value: subClass,
-        enumerable: false,
-        writable: true,
-        configurable: true
+  var _slicedToArray = function () {
+    function sliceIterator(arr, i) {
+      var _arr = [];
+      var _n = true;
+      var _d = false;
+      var _e = undefined;
+
+      try {
+        for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
+          _arr.push(_s.value);
+
+          if (i && _arr.length === i) break;
+        }
+      } catch (err) {
+        _d = true;
+        _e = err;
+      } finally {
+        try {
+          if (!_n && _i["return"]) _i["return"]();
+        } finally {
+          if (_d) throw _e;
+        }
       }
-    });
-    if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
-  }
 
-  var Mailchimp = function (_React$Component) {
-    _inherits(Mailchimp, _React$Component);
-
-    function Mailchimp(props) {
-      _classCallCheck(this, Mailchimp);
-
-      var _this = _possibleConstructorReturn(this, (Mailchimp.__proto__ || Object.getPrototypeOf(Mailchimp)).call(this, props));
-
-      _this.state = {};
-      return _this;
+      return _arr;
     }
 
-    _createClass(Mailchimp, [{
-      key: "handleSubmit",
-      value: function handleSubmit(evt) {
-        var _this2 = this;
-
-        evt.preventDefault();
-        var _props = this.props,
-            fields = _props.fields,
-            action = _props.action;
-
-        var values = fields.map(function (field) {
-          return field.name + "=" + encodeURIComponent(_this2.state[field.name]);
-        }).join("&");
-        var path = action + "&" + values;
-        var url = path.replace('/post?', '/post-json?');
-        var regex = /^([\w_\.\-\+])+\@([\w\-]+\.)+([\w]{2,10})+$/;
-        var email = this.state['EMAIL'];
-        !regex.test(email) ? this.setState({ status: "empty" }) : this.sendData(url);
-      }
-    }, {
-      key: "sendData",
-      value: function sendData(url) {
-        var _this3 = this;
-
-        this.setState({ status: "sending" });
-        (0, _jsonp2.default)(url, { param: "c" }, function (err, data) {
-          if (data.msg.includes("already subscribed")) {
-            _this3.setState({ status: 'duplicate' });
-          } else if (err) {
-            _this3.setState({ status: 'error' });
-          } else if (data.result !== 'success') {
-            _this3.setState({ status: 'error' });
-          } else {
-            _this3.setState({ status: 'success' });
-          };
-        });
-      }
-    }, {
-      key: "render",
-      value: function render() {
-        var _this4 = this;
-
-        var _props2 = this.props,
-            messages = _props2.messages,
-            fields = _props2.fields,
-            styles = _props2.styles,
-            className = _props2.className;
-        var status = this.state.status;
-
-        return _react2.default.createElement(
-          "form",
-          { onSubmit: this.handleSubmit.bind(this), className: className },
-          fields.map(function (input) {
-            return _react2.default.createElement("input", { key: Math.random(),
-              onBlur: function onBlur(_ref) {
-                var target = _ref.target;
-                return _this4.setState(_defineProperty({}, input.name, target.value));
-              },
-              placeholder: input.placeholder,
-              name: input.name,
-              type: input.type,
-              defaultValue: _this4.state[input.name] });
-          }),
-          _react2.default.createElement(
-            "button",
-            {
-              disabled: status === "sending" || status === "success",
-              type: "submit"
-            },
-            messages.button
-          ),
-          _react2.default.createElement(
-            "div",
-            { className: "msg-alert" },
-            status === "sending" && _react2.default.createElement(
-              "p",
-              { style: styles.sendingMsg },
-              messages.sending
-            ),
-            status === "success" && _react2.default.createElement(
-              "p",
-              { style: styles.successMsg },
-              messages.success
-            ),
-            status === "duplicate" && _react2.default.createElement(
-              "p",
-              { style: styles.duplicateMsg },
-              messages.duplicate
-            ),
-            status === "empty" && _react2.default.createElement(
-              "p",
-              { style: styles.errorMsg },
-              messages.empty
-            ),
-            status === "error" && _react2.default.createElement(
-              "p",
-              { style: styles.errorMsg },
-              messages.error
-            )
-          )
-        );
+    return function (arr, i) {
+      if (Array.isArray(arr)) {
+        return arr;
+      } else if (Symbol.iterator in Object(arr)) {
+        return sliceIterator(arr, i);
+      } else {
+        throw new TypeError("Invalid attempt to destructure non-iterable instance");
       }
-    }]);
-
-    return Mailchimp;
-  }(_react2.default.Component);
+    };
+  }();
 
-  Mailchimp.defaultProps = {
-    messages: {
+  exports.default = function (_ref) {
+    var fields = _ref.fields,
+        className = _ref.className,
+        buttonClassName = _ref.buttonClassName,
+        action = _ref.action,
+        _ref$messages = _ref.messages,
+        messages = _ref$messages === undefined ? {
       sending: "Sending...",
       success: "Thank you for subscribing!",
       error: "An unexpected internal error has occurred.",
       empty: "You must write an e-mail.",
       duplicate: "Too many subscribe attempts for this email address",
-      button: 'Subscribe!'
-    },
-    styles: {
+      button: "Subscribe!"
+    } : _ref$messages,
+        _ref$styles = _ref.styles,
+        styles = _ref$styles === undefined ? {
       sendingMsg: {
-        color: '#0652DD'
+        color: "#0652DD"
       },
       successMsg: {
-        color: '#009432'
+        color: "#009432"
       },
       duplicateMsg: {
-        color: '#EE5A24'
+        color: "#EE5A24"
       },
       errorMsg: {
-        color: '#ED4C67'
+        color: "#ED4C67"
       }
-    }
-  };
+    } : _ref$styles;
+
+    var _useState = (0, _react.useState)(""),
+        _useState2 = _slicedToArray(_useState, 2),
+        status = _useState2[0],
+        setStatus = _useState2[1];
+
+    var _useState3 = (0, _react.useState)(fields),
+        _useState4 = _slicedToArray(_useState3, 2),
+        formFields = _useState4[0],
+        setFormFields = _useState4[1];
+
+    var regex = /^([\w_\.\-\+])+\@([\w\-]+\.)+([\w]{2,10})+$/;
+    var getValue = function getValue(key) {
+      return formFields.filter(function (f) {
+        return f.name === key;
+      })[0].value;
+    };
+    var handleChange = function handleChange(field, value) {
+      var updatedFields = formFields.map(function (f) {
+        return f.name === field.name ? _extends({}, f, { value: value }) : f;
+      });
+      setFormFields(updatedFields);
+    };
+    var handleSubmit = function handleSubmit(evt) {
+      evt.preventDefault();
+      var values = formFields.map(function (field) {
+        return field.name + "=" + encodeURIComponent(getValue(field.name));
+      }).join("&");
+      var url = (action + "&" + values).replace("/post?", "/post-json?");
+      var email = getValue("EMAIL");
+      !regex.test(email) ? setStatus("empty") : sendData(url);
+    };
 
-  Mailchimp.propTypes = {
-    action: _propTypes2.default.string,
-    messages: _propTypes2.default.object,
-    fields: _propTypes2.default.array,
-    styles: _propTypes2.default.object,
-    className: _propTypes2.default.string
-  };
+    var sendData = function sendData(url) {
+      setStatus("sending");
+      (0, _jsonp2.default)(url, { param: "c" }, function (err, data) {
+        if (data.msg.includes("already subscribed")) {
+          setStatus("duplicate");
+        } else if (err) {
+          setStatus("error");
+        } else if (data.result !== "success") {
+          setStatus("error");
+        } else {
+          setStatus("success");
+        }
+      });
+    };
 
-  exports.default = Mailchimp;
+    return _react2.default.createElement(
+      "form",
+      { onSubmit: handleSubmit, className: className },
+      formFields && Array.isArray(formFields) && formFields.map(function (input) {
+        return _react2.default.createElement("input", _extends({}, input, {
+          key: input.name,
+          onChange: function onChange(_ref2) {
+            var target = _ref2.target;
+            return handleChange(input, target.value);
+          },
+          value: formFields.filter(function (item) {
+            return item.name === input.name;
+          }).value
+        }));
+      }),
+      _react2.default.createElement(
+        "button",
+        {
+          disabled: status === "sending" || status === "success",
+          type: "submit",
+          className: buttonClassName
+        },
+        messages.button
+      ),
+      _react2.default.createElement(
+        "div",
+        { className: "msg-alert" },
+        status === "sending" && _react2.default.createElement(
+          "p",
+          { style: styles.sendingMsg },
+          messages.sending
+        ),
+        status === "success" && _react2.default.createElement(
+          "p",
+          { style: styles.successMsg },
+          messages.success
+        ),
+        status === "duplicate" && _react2.default.createElement(
+          "p",
+          { style: styles.duplicateMsg },
+          messages.duplicate
+        ),
+        status === "empty" && _react2.default.createElement(
+          "p",
+          { style: styles.errorMsg },
+          messages.empty
+        ),
+        status === "error" && _react2.default.createElement(
+          "p",
+          { style: styles.errorMsg },
+          messages.error
+        )
+      )
+    );
+  };
 });
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 5afbee0..5693bcf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,21 +30,21 @@
       "integrity": "sha1-UCq1SHTX24itALiHoGODzgPQAvE=",
       "dev": true,
       "requires": {
-        "babel-core": "6.26.0",
-        "babel-polyfill": "6.26.0",
-        "babel-register": "6.26.0",
-        "babel-runtime": "6.26.0",
-        "chokidar": "1.7.0",
-        "commander": "2.13.0",
-        "convert-source-map": "1.5.1",
-        "fs-readdir-recursive": "1.1.0",
-        "glob": "7.1.2",
-        "lodash": "4.17.5",
-        "output-file-sync": "1.1.2",
-        "path-is-absolute": "1.0.1",
-        "slash": "1.0.0",
-        "source-map": "0.5.7",
-        "v8flags": "2.1.1"
+        "babel-core": "^6.26.0",
+        "babel-polyfill": "^6.26.0",
+        "babel-register": "^6.26.0",
+        "babel-runtime": "^6.26.0",
+        "chokidar": "^1.6.1",
+        "commander": "^2.11.0",
+        "convert-source-map": "^1.5.0",
+        "fs-readdir-recursive": "^1.0.0",
+        "glob": "^7.1.2",
+        "lodash": "^4.17.4",
+        "output-file-sync": "^1.1.2",
+        "path-is-absolute": "^1.0.1",
+        "slash": "^1.0.0",
+        "source-map": "^0.5.6",
+        "v8flags": "^2.1.1"
       },
       "dependencies": {
         "anymatch": {
@@ -54,8 +54,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "micromatch": "2.3.11",
-            "normalize-path": "2.1.1"
+            "micromatch": "^2.1.5",
+            "normalize-path": "^2.0.0"
           }
         },
         "arr-diff": {
@@ -65,7 +65,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "arr-flatten": "1.1.0"
+            "arr-flatten": "^1.0.1"
           }
         },
         "array-unique": {
@@ -82,9 +82,9 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "expand-range": "1.8.2",
-            "preserve": "0.2.0",
-            "repeat-element": "1.1.2"
+            "expand-range": "^1.8.1",
+            "preserve": "^0.2.0",
+            "repeat-element": "^1.1.2"
           }
         },
         "chokidar": {
@@ -94,15 +94,15 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "anymatch": "1.3.2",
-            "async-each": "1.0.1",
-            "fsevents": "1.1.3",
-            "glob-parent": "2.0.0",
-            "inherits": "2.0.3",
-            "is-binary-path": "1.0.1",
-            "is-glob": "2.0.1",
-            "path-is-absolute": "1.0.1",
-            "readdirp": "2.1.0"
+            "anymatch": "^1.3.0",
+            "async-each": "^1.0.0",
+            "fsevents": "^1.0.0",
+            "glob-parent": "^2.0.0",
+            "inherits": "^2.0.1",
+            "is-binary-path": "^1.0.0",
+            "is-glob": "^2.0.0",
+            "path-is-absolute": "^1.0.0",
+            "readdirp": "^2.0.0"
           }
         },
         "expand-brackets": {
@@ -112,7 +112,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "is-posix-bracket": "0.1.1"
+            "is-posix-bracket": "^0.1.0"
           }
         },
         "extglob": {
@@ -122,7 +122,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "is-extglob": "1.0.0"
+            "is-extglob": "^1.0.0"
           }
         },
         "glob-parent": {
@@ -132,22 +132,24 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "is-glob": "2.0.1"
+            "is-glob": "^2.0.0"
           }
         },
         "is-extglob": {
           "version": "1.0.0",
           "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-1.0.0.tgz",
           "integrity": "sha1-rEaBd8SUNAWgkvyPKXYMb/xiBsA=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "is-glob": {
           "version": "2.0.1",
           "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-2.0.1.tgz",
           "integrity": "sha1-0Jb5JqPe1WAPP9/ZEZjLCIjC2GM=",
           "dev": true,
+          "optional": true,
           "requires": {
-            "is-extglob": "1.0.0"
+            "is-extglob": "^1.0.0"
           }
         },
         "kind-of": {
@@ -157,7 +159,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "is-buffer": "1.1.6"
+            "is-buffer": "^1.1.5"
           }
         },
         "micromatch": {
@@ -167,19 +169,19 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "arr-diff": "2.0.0",
-            "array-unique": "0.2.1",
-            "braces": "1.8.5",
-            "expand-brackets": "0.1.5",
-            "extglob": "0.3.2",
-            "filename-regex": "2.0.1",
-            "is-extglob": "1.0.0",
-            "is-glob": "2.0.1",
-            "kind-of": "3.2.2",
-            "normalize-path": "2.1.1",
-            "object.omit": "2.0.1",
-            "parse-glob": "3.0.4",
-            "regex-cache": "0.4.4"
+            "arr-diff": "^2.0.0",
+            "array-unique": "^0.2.1",
+            "braces": "^1.8.2",
+            "expand-brackets": "^0.1.4",
+            "extglob": "^0.3.1",
+            "filename-regex": "^2.0.0",
+            "is-extglob": "^1.0.0",
+            "is-glob": "^2.0.1",
+            "kind-of": "^3.0.2",
+            "normalize-path": "^2.0.1",
+            "object.omit": "^2.0.0",
+            "parse-glob": "^3.0.4",
+            "regex-cache": "^0.4.2"
           }
         }
       }
@@ -190,9 +192,9 @@
       "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
       "dev": true,
       "requires": {
-        "chalk": "1.1.3",
-        "esutils": "2.0.2",
-        "js-tokens": "3.0.2"
+        "chalk": "^1.1.3",
+        "esutils": "^2.0.2",
+        "js-tokens": "^3.0.2"
       },
       "dependencies": {
         "ansi-regex": {
@@ -213,11 +215,11 @@
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
           "requires": {
-            "ansi-styles": "2.2.1",
-            "escape-string-regexp": "1.0.5",
-            "has-ansi": "2.0.0",
-            "strip-ansi": "3.0.1",
-            "supports-color": "2.0.0"
+            "ansi-styles": "^2.2.1",
+            "escape-string-regexp": "^1.0.2",
+            "has-ansi": "^2.0.0",
+            "strip-ansi": "^3.0.0",
+            "supports-color": "^2.0.0"
           }
         },
         "strip-ansi": {
@@ -226,7 +228,7 @@
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
           "requires": {
-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
           }
         },
         "supports-color": {
@@ -243,25 +245,25 @@
       "integrity": "sha1-rzL3izGm/O8RnIew/Y2XU/A6C7g=",
       "dev": true,
       "requires": {
-        "babel-code-frame": "6.26.0",
-        "babel-generator": "6.26.1",
-        "babel-helpers": "6.24.1",
-        "babel-messages": "6.23.0",
-        "babel-register": "6.26.0",
-        "babel-runtime": "6.26.0",
-        "babel-template": "6.26.0",
-        "babel-traverse": "6.26.0",
-        "babel-types": "6.26.0",
-        "babylon": "6.18.0",
-        "convert-source-map": "1.5.1",
-        "debug": "2.6.9",
-        "json5": "0.5.1",
-        "lodash": "4.17.5",
-        "minimatch": "3.0.4",
-        "path-is-absolute": "1.0.1",
-        "private": "0.1.8",
-        "slash": "1.0.0",
-        "source-map": "0.5.7"
+        "babel-code-frame": "^6.26.0",
+        "babel-generator": "^6.26.0",
+        "babel-helpers": "^6.24.1",
+        "babel-messages": "^6.23.0",
+        "babel-register": "^6.26.0",
+        "babel-runtime": "^6.26.0",
+        "babel-template": "^6.26.0",
+        "babel-traverse": "^6.26.0",
+        "babel-types": "^6.26.0",
+        "babylon": "^6.18.0",
+        "convert-source-map": "^1.5.0",
+        "debug": "^2.6.8",
+        "json5": "^0.5.1",
+        "lodash": "^4.17.4",
+        "minimatch": "^3.0.4",
+        "path-is-absolute": "^1.0.1",
+        "private": "^0.1.7",
+        "slash": "^1.0.0",
+        "source-map": "^0.5.6"
       },
       "dependencies": {
         "babylon": {
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     "repeat-string": {
       "version": "1.6.1",
@@ -2957,14 +3007,15 @@
       "integrity": "sha1-UhTFOpJtNVJwdSf7q0FdvAjQbdo=",
       "dev": true,
       "requires": {
-        "is-finite": "1.0.2"
+        "is-finite": "^1.0.0"
       }
     },
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
       "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "set-immediate-shim": {
       "version": "1.0.1",
@@ -2997,7 +3048,7 @@
       "integrity": "sha512-try0/JqxPLF9nOjvSta7tVondkP5dwgyLDjVoyMDlmjugT2lRZ1OfsrYTkCd2hkDnJTKRbO/Rl3orm8vlsUzbA==",
       "dev": true,
       "requires": {
-        "source-map": "0.5.7"
+        "source-map": "^0.5.6"
       }
     },
     "string_decoder": {
@@ -3007,7 +3058,7 @@
       "dev": true,
       "optional": true,
       "requires": {
-        "safe-buffer": "5.1.1"
+        "safe-buffer": "~5.1.0"
       }
     },
     "to-fast-properties": {
@@ -3047,7 +3098,7 @@
       "integrity": "sha1-qrGh+jDUX4jdMhFIh1rALAtV5bQ=",
       "dev": true,
       "requires": {
-        "user-home": "1.1.1"
+        "user-home": "^1.1.1"
       }
     },
     "whatwg-fetch": {
diff --git a/package.json b/package.json
index 39f7a76..011ee79 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-mailchimp-form",
-  "version": "1.0.1",
+  "version": "1.1.1",
   "description": "React subscribe form for Mailchimp",
   "main": "dist/index.js",
   "scripts": {
@@ -36,17 +36,15 @@
     "babel-preset-react": "^6.24.1",
     "babel-preset-stage-2": "^6.24.1",
     "jsonp": "^0.2.1",
-    "prop-types": "^15.6.1",
-    "react": "^16.2.0",
-    "react-dom": "^16.2.0"
+    "react": "^16.8.6",
+    "react-dom": "^16.8.6"
   },
   "dependencies": {
     "jsonp": "^0.2.1"
   },
   "peerDependencies": {
     "jsonp": "^0.2.1",
-    "prop-types": "^15.6.1",
-    "react": "^16.2.0",
-    "react-dom": "^16.2.0"
+    "react": "^16.8.6",
+    "react-dom": "^16.8.6"
   }
 }
diff --git a/src/index.js b/src/index.js
index 8b3344c..4d9496f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,76 +1,12 @@
-import React from "react"
-import jsonp from "jsonp"
-import PropTypes from 'prop-types';
+import React, { useState } from "react";
+import jsonp from "jsonp";
 
-class Mailchimp extends React.Component {
-  state = {};
-
-  handleSubmit(evt) {
-    evt.preventDefault();
-    const { fields, action } = this.props;
-    const values = fields.map(field => {
-      return `${field.name}=${encodeURIComponent(this.state[field.name])}`;
-    }).join("&");
-    const path = `${action}&${values}`;
-    const url = path.replace('/post?', '/post-json?');
-    const regex = /^([\w_\.\-\+])+\@([\w\-]+\.)+([\w]{2,10})+$/;
-    const email = this.state['EMAIL'];
-    (!regex.test(email)) ? this.setState({ status: "empty" }) : this.sendData(url);
-  };
-
-  sendData(url) {
-    this.setState({ status: "sending" });
-    jsonp(url, { param: "c" }, (err, data) => {
-      if (data.msg.includes("already subscribed")) {
-        this.setState({ status: 'duplicate' });
-      } else if (err) {
-        this.setState({ status: 'error' });
-      } else if (data.result !== 'success') {
-        this.setState({ status: 'error' });
-      } else {
-        this.setState({ status: 'success' });
-      };
-    });
-  }
-
-  render() {
-    const { fields, styles, className, buttonClassName } = this.props;
-    const messages = {
-      ...Mailchimp.defaultProps.messages,
-      ...this.props.messages
-    }
-    const { status } = this.state;
-    return (
-      <form onSubmit={this.handleSubmit.bind(this)} className={className}>
-        {fields.map(input =>
-          <input
-            {...input}
-            key={input.name}
-            onChange={({ target }) => this.setState({ [input.name]: target.value })}
-            defaultValue={this.state[input.name]}
-          />
-        )}
-        <button
-          disabled={status === "sending" || status === "success"}
-          type="submit"
-          className={buttonClassName}
-        >
-          {messages.button}
-        </button>
-        <div className='msg-alert'>
-          {status === "sending" && <p style={styles.sendingMsg}>{messages.sending}</p>}
-          {status === "success" && <p style={styles.successMsg}>{messages.success}</p>}
-          {status === "duplicate" && <p style={styles.duplicateMsg}>{messages.duplicate}</p>}
-          {status === "empty" && <p style={styles.errorMsg}>{messages.empty}</p>}
-          {status === "error" && <p style={styles.errorMsg}>{messages.error}</p>}
-        </div>
-      </form>
-    );
-  }
-}
-
-Mailchimp.defaultProps = {
-  messages: {
+export default ({
+  fields,
+  className,
+  buttonClassName,
+  action,
+  messages = {
     sending: "Sending...",
     success: "Thank you for subscribing!",
     error: "An unexpected internal error has occurred.",
@@ -78,8 +14,7 @@ Mailchimp.defaultProps = {
     duplicate: "Too many subscribe attempts for this email address",
     button: "Subscribe!"
   },
-  buttonClassName: "",
-  styles: {
+  styles = {
     sendingMsg: {
       color: "#0652DD"
     },
@@ -93,15 +28,76 @@ Mailchimp.defaultProps = {
       color: "#ED4C67"
     }
   }
-};
+}) => {
+  const [status, setStatus] = useState("");
+  const [formFields, setFormFields] = useState(fields);
+  const regex = /^([\w_\.\-\+])+\@([\w\-]+\.)+([\w]{2,10})+$/;
+  const getValue = key => formFields.filter(f => f.name === key)[0].value;
+  const handleChange = (field, value) => {
+    const updatedFields = formFields.map(f => {
+      return f.name === field.name ? { ...f, value } : f;
+    });
+    setFormFields(updatedFields);
+  };
+  const handleSubmit = evt => {
+    evt.preventDefault();
+    const values = formFields
+      .map(field => {
+        return `${field.name}=${encodeURIComponent(getValue(field.name))}`;
+      })
+      .join("&");
+    const url = `${action}&${values}`.replace("/post?", "/post-json?");
+    const email = getValue("EMAIL");
+    !regex.test(email) ? setStatus("empty") : sendData(url);
+  };
 
-Mailchimp.propTypes = {
-  action: PropTypes.string,
-  messages: PropTypes.object,
-  fields: PropTypes.array,
-  styles: PropTypes.object,
-  className: PropTypes.string,
-  buttonClassName: PropTypes.string
-};
+  const sendData = url => {
+    setStatus("sending");
+    jsonp(url, { param: "c" }, (err, data) => {
+      if (data.msg.includes("already subscribed")) {
+        setStatus("duplicate");
+      } else if (err) {
+        setStatus("error");
+      } else if (data.result !== "success") {
+        setStatus("error");
+      } else {
+        setStatus("success");
+      }
+    });
+  };
 
-export default Mailchimp;
+  return (
+    <form onSubmit={handleSubmit} className={className}>
+      {formFields &&
+        Array.isArray(formFields) &&
+        formFields.map(input => (
+          <input
+            {...input}
+            key={input.name}
+            onChange={({ target }) => handleChange(input, target.value)}
+            value={formFields.filter(item => item.name === input.name).value}
+          />
+        ))}
+      <button
+        disabled={status === "sending" || status === "success"}
+        type="submit"
+        className={buttonClassName}
+      >
+        {messages.button}
+      </button>
+      <div className="msg-alert">
+        {status === "sending" && (
+          <p style={styles.sendingMsg}>{messages.sending}</p>
+        )}
+        {status === "success" && (
+          <p style={styles.successMsg}>{messages.success}</p>
+        )}
+        {status === "duplicate" && (
+          <p style={styles.duplicateMsg}>{messages.duplicate}</p>
+        )}
+        {status === "empty" && <p style={styles.errorMsg}>{messages.empty}</p>}
+        {status === "error" && <p style={styles.errorMsg}>{messages.error}</p>}
+      </div>
+    </form>
+  );
+};