Growing an email list requires a well-planned and executed strategy, and it can take time and effort to see results. However, there are some cost-effective tactics that you can implement to grow your email list:

Create valuable content: Develop content that provides value to your target audience, such as blog posts, guides, and ebooks. Make sure that the content is relevant and addresses your audience's pain points.

Optimize your website for conversions: Make sure that your website is optimized for lead generation by using lead magnets such as pop-ups, slide-ins, and exit-intent forms to capture email addresses.

Use social media: Leverage social media platforms like Facebook, Twitter, and LinkedIn to promote your content and encourage followers to subscribe to your email list.

Run a referral program: Offer your current subscribers an incentive to refer their friends and family to join your email list. This could be in the form of a discount code or a free resource.

Collaborate with other businesses: Find other businesses in your niche that have a similar target audience and offer to collaborate on a joint email campaign.

Attend events: Attend events where your target audience is likely to be, and collect email addresses through sign-ups or business cards.

It's important to note that growing your email list fast may not necessarily lead to high-quality leads or conversions. Focus on building a targeted email list with engaged subscribers who are interested in your product or service.