Release Notes v1.2.0: Multi-Gateway Redundancy & Cascading Failover

With Solidrix Send v1.2.0, we are introducing multi-gateway redundancy to ensure your emails are always delivered, even if a provider goes down. ### What is New: - **Cascading Gateway Router**: Create a sequence of fallbacks. If AWS SES returns a 500 error or throttles your account, Solidrix Send instantly shifts the mail to Resend or Postmark. - **Round-Robin Routing**: Distribute your daily outbound volume across multiple connected gateways to maintain uniform sending metrics. - **Outbox Provider Tags**: Easily inspect which gateway routed each specific email from your history logs.