It’s important to note that you won’t be collecting names or sending out emails by hand, one email at a time. You’d soon be overwhelmed by the volume! You can use systems like Constant Contact, Get Response, AWeber, and Campaign Monitor to manage your email lists and broadcast your emails. Systems like this can also track leads, opt-in rates, sales, open rates, click-through rates and other important stats.
This is considered the best form of consent a user can provide a sender, since it requires a secondary action from the email address owner to confirm subscription to an email list. This typically comes in the form of a confirmation link call to action, a URL to post in a browser, etc. For senders, this is the ideal method of collecting addresses because you demonstrate a genuine desire to make sure your subscriber absolutely wants your content, and it sets an effective foundation for your sender/recipient relationship moving forward.
What I will say is that opt-ins on your website and social media will be your friend. Supply traffic coming from Google, Facebook, and Twitter with offerings that they must sign up for. Use a free ebook, a checklist, a free podcast, or even an email course (which you can set up with your autoresponder service) to get them to subscribe to your list.
You can use this strategy to your advantage and increase your email list by giving people an incentive in return for their email. The giveaway could be free access to an e-book, a report, a gift hamper, or perhaps a lucky draw where people enter their emails and get a chance to win. A tantalizing offer is all you need for people to comply. For example: