How to increase timeout while calling web service from Apex

How to increase timeout while calling web service from Apex

docSample.DocSamplePort stub = new docSample.DocSamplePort();

stub.timeout_x = 2000; // timeout in milliseconds

External Email Address Limitation for Mass Email in Salesforce:

Below is the maximum number of external email addresses you can include in each mass email depends on your salesforce edition:

Edition                                                                                  External Address Limit per Mass Email

Personal, Contact Manager, and Group Editions          Mass email not available

Professional Edition                                                            250

Enterprise Edition                                                                500

Unlimited Edition                                                                1,000

Developer Edition                                                                10