Expand B2C Email Contact List Safely

I'm looking for a professional who can help me grow my B2C email contact list in a safe, efficient and effective way.

Current Methods:
- I've only been able to grow my list through website sign-ups so far.

Incentives:
- I'm currently offering discounts and coupons for sign-ups.

Ideal Skills and Experience:
- Proven track record in email marketing.
- Experience with B2C audience.
- Expertise in building contact lists.
- Knowledge of safe, ethical methods for list growth.
- Creative thinking to enhance current incentive strategy.
-The store platform WordPress.
-This is my website worldbestitems.com