Email marketing platform: Dynamic content blocks based on agent and market segments

Hey r/Emailmarketing (and any r/marketing or r/CRM folks lurking), We’re a mid-sized, multi-agent team in a major U.S. market evaluating a move off a legacy real-estate email tool. It’s cheap and familiar, but feature-light and the reporting is… questionable. Recent brand-wide deliverability issues (big parent brand flagged; long story) pushed us to rethink our stack. **What we need the new platform to solve (must-haves):** * **Deliverability & reputation control:** custom sending domain, DKIM/DMARC/BIMI support, list hygiene, warmup guidance. * **Segmentation at scale:** by **agent**, **neighborhood/market**, **listing/campaign**, and engagement (opens/clicks/site activity). * **Dynamic content blocks:** swap modules by segment (agent/market) in a single send. * **Real analytics:** GA4 + UTM auto-tagging, attribution that holds up, funnel-ish views (click → site → action). * **Integrations:** Meta/Google ads audiences, webhooks/Zapier/API to connect with our site + CRM. * **Governance:** role-based access, approvals, brand-lock templates so individual users don’t go rogue. **Nice-to-haves:** * Lightweight CRM or clean sync to our CRM. * Landing pages/forms for lead capture (not mission-critical, but helpful). * SMS optional. * Simple but beautiful templates (we’re brand-conscious). **Sending pattern:** * Two **story-led monthly sends** (Client Briefing + Listings, both with dynamic content). * Occasional **highly targeted one-offs** (e.g., district-specific, event-driven). * No “spray & pray.” Purposeful lists only. **Questions for the community:** 1. If you’ve moved a real-estate (or multi-advisor/professional services) program off a legacy tool, **what did you pick and why**? 2. **Deliverability rehab:** would you split to a new subdomain for marketing vs. keep the root and harden DNS? Any warmup playbooks that worked for you? 3. **Segmentation governance:** how do you prevent users from blasting “all contacts”? (Template locks, approval flows, audience caps?) 4. For **GA4 + paid media**, which platforms give you clean audience syncs and reporting without duct-tape? 5. Any **pricing “gotchas”** at \~mid-market contact counts we should know before we commit? 6. If you chose **HubSpot/ActiveCampaign/Campaign Monitor/Klaviyo/Customer.io**, what’s the **one thing you wish you knew before migrating**? **Constraints:** * Budget: not enterprise, but we can step up from bare-bones if it materially improves control + reporting. * Team: marketing ops is comfortable with APIs/Zapier, but we don’t want to babysit a brittle system. * Goal: a **tight loop** between email ↔ site ↔ ads so we can target precisely and measure honestly. **TL;DR:** Need a modern email platform with strong deliverability, dynamic segmentation (agent/market/listing), GA4 + ad platform integrations, and role-based governance. What’s working for you, what’s overrated, and what migration tips would you share?