Filling B2B webinar seats consistently requires a repeatable outreach system, not one-off email blasts. The most effective approach combines Google Calendar invites sent at scale, automated RSVP tracking, Zoom registration, and occurrence-scoped follow-up flows — all running without manual intervention between occurrences.
This playbook walks through each step of a CinnaReach-powered webinar outreach campaign: from building your contact pool to post-webinar follow-up segmentation. Use it as the operational blueprint for any recurring B2B webinar program.
The 6-Step Webinar Outreach Playbook
Build and segment your contact pool
Upload a CSV of target prospects into your tenant contact pool. Include first name, last name, company, title, and email as a minimum. The more enrichment data you carry, the better you can filter and prioritise your invite queue.
Apply ICP (Ideal Customer Profile) filters before the campaign launches. CinnaReach allows optional exclusion of free email domains (gmail.com, yahoo.com), role accounts (info@, support@), and configured competitor domains — all enforced automatically at the eligibility check stage.
For recurring series, choose your contact pool mode: campaign_local (each occurrence works through its own pool from position 1) or tenant_global_series (the next occurrence continues through the pool where the last one left off, preventing any contact from being skipped or double-processed across the series).
Create your Zoom webinar and set the occurrence
In CinnaReach, each webinar campaign contains one or more occurrences. An occurrence is one event date — Tuesday 4 June at 16:00, for example. Weekly programs have four occurrences per month. Monthly programs have one.
Connect your Zoom webinar in one of two ways: enter an existing Zoom webinar ID, or create a new webinar from a saved Zoom template (overriding title, date, time, duration, and description per occurrence). The resulting Zoom webinar ID is stored against the occurrence record and used for all registrations.
Configure your invite window
The invite window controls when your campaign starts and stops sending. The default is 18 days before the webinar to 3 days before — but this is fully configurable per campaign.
For monthly webinars: extend the invite window to 28 days to eliminate dead zones between occurrences. With a 28-day window and a 28-day gap between events, invites flow continuously every day — your daily invite capacity is never wasted.
⚠️ Critical rule: Never send invites inside the final 72 hours before a webinar. Late invites hurt attendance — recipients cannot plan, and Zoom's own reminders (1 week, 1 day, 1 hour) are already active. CinnaReach enforces this cutoff automatically.
Configure your sending accounts and launch
Connect your Google Workspace sending accounts — the real inboxes that send Calendar invites. CinnaReach defaults to 20 inboxes across 4 domains, each capped at 50 invites/day. Every active account participates via round-robin rotation — no single inbox carries disproportionate load.
Invites are distributed across two send windows — morning (09:30–12:00) and afternoon (14:00–16:30) in the tenant's timezone — with 2–5 minute randomised spacing. This mirrors human sending behaviour and protects deliverability.
If two or more campaigns are active simultaneously, CinnaReach switches to Priority Mode and allocates capacity proportionally using the priority score formula. The campaign closest to its webinar date receives the largest share.
Monitor RSVPs and Zoom registrations in real time
The CinnaReach dashboard updates every 15 minutes with current RSVP counts per occurrence: Yes, Maybe, No, and Awaiting. Yes and Maybe contacts are automatically registered in the linked Zoom webinar — deduplicated by email + webinar ID before every API call.
Declined (No) contacts are suppressed from further outreach for that campaign. Awaiting contacts remain eligible and continue receiving invites until the send window closes. The dashboard sender panel shows all configured senders including those with zero sends today — so you can spot inactive accounts immediately.
Run occurrence-scoped post-webinar follow-up
Within minutes of the webinar ending, CinnaReach syncs Zoom attendance data for that specific occurrence. Contacts are segmented into attendees (attended = true) and no-shows (registered but did not attend).
Each group is synced to a webinar-scoped MailerLite group or tagged segment — never a shared global group. This ensures the right follow-up email goes to the right audience, scoped exactly to the occurrence that just ended.
No-shows optionally enter no-show recycling: eligible contacts are automatically added to the next occurrence's invite queue with a recycled flag. For recurring weekly programs, this compounding effect meaningfully increases total attendance over time.
Webinar Invite Timing: What the Data Shows
Timing has an outsized impact on RSVP and attendance rates. The following defaults in CinnaReach are based on B2B send-time benchmarks:
| Parameter | Default | Rationale |
|---|---|---|
| Invite window open | 18 days before | Far enough ahead for recipients to plan, close enough to feel relevant |
| Invite window close | 3 days before | 72-hour cutoff — inside this window, attendance quality drops sharply |
| Best event days | Tue / Wed / Thu | B2B attendance peaks mid-week; Mon/Fri see lower show rates |
| Best event time | 16:00 tenant timezone | Late afternoon clears calendar conflicts; enough buffer for late finishes |
| Send blocks | 09:30–12:00, 14:00–16:30 | Invites land in active inbox windows, not overnight queues |
| Spacing per invite | 2–5 min randomised | Mimics human sending; prevents spam pattern detection |
Frequently Asked Questions
How far in advance should I send webinar invites? +
The recommended window is 18 days before the webinar, stopping 3 days before. Invites sent inside the final 72 hours see dramatically lower attendance — recipients cannot plan, and Zoom reminders already handle late-stage engagement.
What days get the best webinar RSVP rates? +
Tuesday, Wednesday, and Thursday consistently outperform Monday and Friday for B2B webinars. CinnaReach defaults to sending Mon–Thu, with Friday optional and weekends off by default.
How do I re-engage no-shows from a previous webinar? +
No-show recycling automatically identifies contacts who registered but did not attend, checks cooldown eligibility, and adds them to the next occurrence's invite pool. This is enabled by default in CinnaReach for recurring programs.
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