We have identified an issue with an upstream provider for specific email queues. We have escalated the issue and are working with the upstream provider to resolve.
Jomablue emails are split between Transitional and Broadcast/Marketing emails automatically ensuring high delivery rates across all your email communications. In this particular case, the Broadcast/Marketing emails are affected but transactional emails - such as for invoices, OTP's etc remain unaffected.
We will continue to update here as we learn more and work towards a resolution with our upstream provider.