| Mailshake | Outlook Calendar | |
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Book meetings quickly and easily with HubSpot and Outlook Calendar.
| Metric | Mailshake | Outlook Calendar |
|---|---|---|
| Rating | ★ 3.5 ★ | 3.4 ★ |
| Total reviews | 13 | ★ 1.5k |
| Active installs | 827+ | 139,727+ |
| Free plan | — | — |
| Pricing | Email Outreach | From $5/mo |
| Pricing tiers | 2 tiers | ★ 3 tiers |
| Listed since | Oct 2019 | Jan 2019 |
Mailshake edges out Outlook Calendar on rating (3.5★ vs 3.4★), but the gap is small enough that pricing fit and feature differentiation should drive the decision more than the headline number.
Pricing entry tiers: Mailshake at Email Outreach, Outlook Calendar at From $5/mo. 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 Calendar has the larger user base (1,545 reviews vs 13), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Mailshake's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat.
Recommended by size: small/early-stage teams who need fast install and low risk should default to Mailshake; mid-market and enterprise teams with specific feature requirements should evaluate both — Outlook Calendar's 1,545-review base may include the workflow context that matches your specific use case better than Mailshake'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 HubSpot App Marketplace 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: Mailshake audit • Outlook Calendar audit
Both Mailshake and Outlook Calendar offer paid plans only. Mailshake starts at Email Outreach; Outlook Calendar starts at From $5/mo. Compare the per-tier features in the Pricing section above before committing.
Mailshake has the higher average rating (3.5★ from 13 reviews) compared to Outlook Calendar (3.4★ from 1,545 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
Mailshake holds the higher average rating (3.5★ vs 3.4★). 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 HubSpot App Marketplace. Outlook Calendar has the deeper published review base (1,545 vs 13), 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.
Mailshake typically suits early-stage and growth-mode teams based on its published review base (13 reviews). Outlook Calendar typically suits early-stage and growth-mode teams based on its published review base (1,545 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. Mailshake and Outlook Calendar 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 Mailshake" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.