You’re not allowed to contact random people under the new GDPR laws with business propositions, however, you can still contact existing clients or those who have shown an interest in your content (e.g. by signing up for notifications when you make updates to your blog, or similar).
You can also create content, like whitepapers and research studies, which are only accessible when people offer up their contact information willingly. This allows you to send targeted emails to each group to further your brand affinity and increasing the chance of a sale.
We can help you craft an outbound marketing strategy with long term goals to eventually have a nicely curated list of contacts to build your clientele.