Note: Searching ‘Contributor guidelines’ is a great way to do this. The submission process tends to vary from site to site, and some won’t have any ‘Contributor Guidelines’ available. In the knitting niche, there are some sites that accept submissions via a contact form and some that will ask that we get in contact via email. If you can’t find the contact information of a blog, sign up to their email list and then reply to the address that is used.
For subscribers who may have been on your list for a longer period of time, a small incentive or discount will often get them talking. Marketers should capitalize on word-of-mouth marketing by incorporating email sign-up on viral components, such as features that allow site visitors to forward products, services, wish lists, information online, notifications and more to their friends.
Include social sharing buttons and an "Email to a Friend" button in your marketing emails. That way, you'll gain access to their friends, colleagues, and networks and expand your contact list. At the bottom of your emails, include a "Subscribe" CTA as a simple text-based link so that the people receiving the forwarded emails can easily opt-in, too.
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: