List Management
Lists segmented by criteria or manual curation. Active and inactive subscribers are tracked separately; suppression lists for unsubscribes and bounces apply globally across the org so you cannot accidentally re-mail someone who opted out of a different list. The CRM-synced list is the most common pattern — define a CRM view (e.g. “Customers in EMEA, MQL stage”) and mirror it to Campaigns. Two-way sync flags unsubscribes back to a CRM custom field. Hard-bounced addresses move to suppression after a single bounce; soft bounces tolerate three before suppression.
Campaign Types
Regular sends, A/B tests, automated journeys (drip workflows), RSS-triggered, and transactional via API. Journeys are the high-value pattern for nurture: trigger from a CRM field change, branch on email opens or link clicks, and exit on a goal conversion. The visual journey builder supports up to 200 nodes per workflow, but practical readability tops out around 25. Transactional sends through the Zoho ZeptoMail API (separate product, paid per email) are the right tool for receipts and password resets — Campaigns is for marketing volume.
Segmentation
Dynamic segments update in real time based on behavior (opens, clicks, web visits via Zoho PageSense) or CRM data (industry, deal stage, last activity date). Combine criteria with AND/OR logic up to five conditions deep. The segment recompute fires on every send, so a “Last 30 days openers” segment is always current. Static segments snapshot membership at creation — useful when you want to A/B test on a frozen audience.
A/B Testing
Subject line, from name, and content are the testable variables. Auto-selects winner after a test window (default 4 hours, configurable up to 48). Winning criterion is open rate, click rate, or revenue (if tied to a Commerce or Books goal). Sample size matters — split tests on lists under 2000 recipients rarely produce statistically significant results. The test split is configurable from 10/10/80 (10% to A, 10% to B, 80% to winner) up to 50/50.
Deliverability
Warm the domain by ramping send volume gradually — start at 500/day for a new domain, double weekly until you hit steady state. Authenticate with SPF (include:zcsend.net), DKIM (signed by Zoho per domain), and DMARC. Monitor bounce rate (target under 2%), complaint rate (target under 0.1%), and unsubscribe rate (target under 0.5%). Zoho provides per-campaign deliverability reports including ISP-level open rates, which is how you spot a Gmail-specific deliverability issue early.
Common Failure Modes
Sending to a stale list (12+ months no activity) tanks deliverability across all subsequent campaigns — re-engage or suppress before sending. Image-only emails trip spam filters; maintain at least 60% text content. Sender reputation collapse from a single bad send can take 4-6 weeks to recover, so the cost of a poorly targeted blast is not just the unsubscribes — it’s the next quarter’s open rates.
What to do this week
Run a deliverability audit (SPF, DKIM, DMARC, bounce rate, complaint rate), suppress contacts with zero opens in the last 12 months, and convert your highest-volume regular send into a journey with a behavior-based exit condition.
