可自托管的开源邮件投递平台，SendGrid、Mailgun 的替代。
Replaces SendGrid
Open-source alternatives to SendGrid
Transactional email delivery service
SendGrid website ↗2 open-source alternatives
Open-source alternatives to similar software
Google's backend-as-a-service (auth, database, storage)
Monitoring and observability platform
Frontend and full-stack app hosting
PaaS for app hosting
Managed vector database
Hosted search service
Static site and Jamstack hosting
NAT traversal and exposing local services