fix: Fixing email sending broken when attempting to send emails from different goroutines due to a data race#494

Open

andrew-pavlov-ua wants to merge 2 commits intosendgrid:mainfrom apvsyp:main-copy

+89-23

Commits on Feb 10, 2025

Added a test to check thread safety, it failed with race 'detected during execution'
andrew-pavlov-ua
committed

Commits on Feb 11, 2025

Fixed data race when sending emails by changing Client struct
andrew-pavlov-ua
committed