Side-by-side comparison · 24 data points
✓ Salesforce for Your Inbox Email Integration ✓ Sync Email, Calendar, & Tasks ✓ Calendar Scheduling & Lead Routing ✓ Email Tracking for Opens & Clicks ✓ AI Pre-Meeting Prep & Transcription ✓ Supports All Salesforce Editions & Clouds ✓ 14 Day Free Trial
| Outlook, Gmail & Office 365-Sidebar- | ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation | |
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Power Your Sales Team with Real-Time B2B Intelligence—Without Ever Leaving Salesforce
| Metric | Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling | ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation |
|---|---|---|
| Rating | ★ 4.8 ★ | 4.6 ★ |
| Total reviews | ★ 443 | 348 |
| Free plan | — | — |
| Pricing | paid | paid |
| Pricing tiers | ★ 4 tiers | 1 tier |
| Listed features | 4 | ★ 6 |
| Languages | 1 supported | 1 supported |
| Listed since | Apr 2015 | Dec 2019 |
Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling edges out ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation on rating (4.8★ vs 4.6★), but the gap is small enough that pricing fit and feature differentiation should drive the decision more than the headline number.
Pricing entry tiers: Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling at paid, ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation at paid. Check each app's tier structure for the capacity limits you actually need before deciding — the headline number is the same shape, but the gating shape per tier (seats, usage volume, integrations) varies.
Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling has the larger user base (443 reviews vs 348), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat.
Recommended by size: small/early-stage admins who need fast install and low risk should default to Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling; mid-market and enterprise admins with specific feature requirements should evaluate both — ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation's 348-review base may include the workflow context that matches your specific use case better than Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling's broader-but-shallower coverage.
This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical Salesforce AppExchange listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling audit • ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation audit
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| Keyword | Outlook, Gmail & Office 365-Sidebar- | ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation |
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| signals | #12 | #3 |
| contact | #66 | #15 |
| lead capture | #62 | #27 |
| esign | #117 | #96 |
No tracked changes.
Both Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling and ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation offer paid plans only. Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling starts at paid; ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation starts at paid. Compare the per-tier features in the Pricing section above before committing.
Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling has the higher average rating (4.8★ from 443 reviews) compared to ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation (4.6★ from 348 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling holds the higher average rating (4.8★ vs 4.6★). That is the one dimension AppRanks can separate them on here — read both apps' detail pages for the feature breakdown and recent listing changes.
Both apps are one-click installs from the Salesforce AppExchange. Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling has the deeper published review base (443 vs 348), which often — though not always — accompanies better-tested setup docs. AppRanks doesn't measure setup time directly: read the recent reviews on each app's detail page for user-reported install experience.
Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling typically suits early-stage and growth-mode teams based on its published review base (443 reviews). ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation typically suits early-stage and growth-mode teams based on its published review base (348 reviews). A larger review base generally means the app has been exercised at scale — relevant if you are processing high volume or handling enterprise compliance requirements.
Migration support varies by app and category. Outlook, Gmail & Office 365-Sidebar- Email Tracking- Calendar Sync- Scheduling and ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from ZoomInfo SalesOS - Global Data, Sales Intelligence & Automation" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.