Twilio–Salesforce Integration & SFMC Email

I need my Salesforce org fully connected to Twilio so that customer outreach can happen directly from standard objects. The end-to-end integration should let me trigger and track communications—primarily SMS, with the option to expand to voice or other Twilio messaging services later—without leaving Salesforce. Please handle the Twilio Console setup, API keys, named credentials, Apex or Flow logic, and whatever package configuration is required so everything is authenticated, tested, and ready for production.

Alongside the integration, I want SalesForce Marketing Cloud prepared for immediate use. The initial priority is email campaign creation: building reusable templates, setting up sender authentication, configuring send classifications, and making sure campaigns can be launched from Journey Builder the moment we’re ready. If additional groundwork such as data extensions or journey automation is needed to support the email work, include it in your plan.

Deliverables
• Working Twilio–Salesforce connection (SMS enabled, call-outs logged on related records)
• Step-by-step documentation of the integration settings and any custom code
• SFMC email campaign framework: at least one responsive template, sender profile, test send, and clear instructions for creating future campaigns
• Short hand-off call or walkthrough video confirming everything functions as expected

Everything must be deployable via Change Set or unlocked package so I can move it from sandbox to production with minimal friction.