v2.19.0

What's Changed

• feat: Retrieve contact by email by @drish in https://github.com/resend/resend-go/pull/61
• chore: Bump to v2.19.0 by @drish in https://github.com/resend/resend-go/pull/62

Full Changelog: https://github.com/resend/resend-go/compare/v2.18.0...v2.19.0