During February 2026, this developer contributed to the zotonic/zotonic repository by implementing a configurable SMTP sender limit to enhance email delivery reliability and performance. The work involved introducing a new configuration parameter and updating backend logic in Erlang to dynamically read and enforce the sender limit from configuration files. This approach enabled more predictable email throughput under varying loads and allowed for easier operational tuning across different environments, reducing the risk of SMTP bottlenecks. The developer demonstrated skills in Erlang, backend development, and configuration-driven design, with changes traceable to issue #4308 and managed through disciplined version control practices.