# Instantly vs Mailshake — which fits your stack in 2026?

> **TL;DR** Instantly vs Mailshake : real-world feature + pricing breakdown for 2026 procurement decisions. Includes Derrick App ($10/mo) as the Sheet-native alternative to both.

*Canonical: https://derrick-app.com/vs/instantly-vs-mailshake-vs-derrick-app*

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## Why choose Derrick against Instantly or Mailshake

### Native Google Sheets enrichment, no CSV exports
Instantly and Mailshake both run as standalone platforms — separate UIs, separate logins, CSV exports + imports to move data into your CRM or spreadsheet. Derrick skips that entire layer : you enrich a Google Sheet with a formula (=DERRICK_EMAIL, =DERRICK_PHONE, =DERRICK_TECH) and the column populates inline. No platform-switching, no CSV round-trip.

### Flat $10/month pricing — no credit walls
Pricing comparison : Instantly from $37/month, Mailshake from $29/user/month, Derrick at $10/mo flat. Note the unit — both Instantly and Mailshake either cap your credits or charge per seat, so a real team's monthly bill is typically 2-5× the headline. Derrick's $10 is the full price regardless of how many rows you enrich.

### Plug Derrick into Claude / ChatGPT via MCP — no glue code
In 2026, AI agents need data tools they can call natively. Derrick speaks MCP out of the box — point Claude at your sheet, ask "enrich these 200 LinkedIn URLs with mobile numbers", done. Instantly and Mailshake need either a custom integration or a Zapier middleman for the same workflow.

## Comparison : Instantly vs Mailshake vs Derrick

|  | [Instantly](/tools/instantly-review) | Derrick App | [Mailshake](/tools/mailshake-review) |
| --- | --- | --- | --- |
| Entry price | $37/month | $10/mo flat | $29/user/month |
| Free plan | Free 14-day trial | 14-day full trial | 30-day money-back guarantee |
| Best for | Agencies + cold-email-at-scale | Sheet-native enrichment | Traditional SDR teams on Salesforce |
| Category positioning | Cold email outreach | Spreadsheet-native B2B data | Sales engagement |
| G2 rating | 4.8/5 | — | 4.4/5 |
| Founded | 2021 | 2022 | 2017 |
| Mailbox model | Unlimited on all paid tiers | N/A — data not sender | Per-user (1-5 mailboxes/seat) |
| Built-in warm-up | 1.5M+ mailbox private network | N/A | Basic, no private network |
| AI personalization | Gates to Hypergrowth ($97) | Via LLM integrations | Added 2024, less mature |
| Bundled B2B database | 160M contacts (Lead Finder) | Derrick search + enrich | Standalone |
| Works natively in Google Sheets | ✕ | ✓ | ✕ |
| Per-row pricing (no credit caps) | ✕ | ✓ | ✕ |
| MCP-ready for AI / LLM agents | ✕ | ✓ | ✕ |

## Instantly vs Mailshake vs Derrick App pricing in a nutshell

### Instantly pricing (Agencies + cold-email-at-scale)
Cold email outreach category : Instantly entry tier is $37/month. Best-for : agencies + cold-email-at-scale. See the complete Instantly pricing page for tier comparison, credit cap behaviour, and annual-vs-monthly delta.
[Visit pricing](/tools/instantly-pricing)

### Derrick App
Results first. Complexity removed. Native Google Sheets workflow, 100+ data points, AI-powered scoring, €9/month entry plan, 100 free credits.
[Discover Derrick](https://derrick-app.com/)

### Mailshake pricing (Traditional SDR teams on Salesforce)
Sales engagement category : Mailshake entry tier is $29/user/month. Best-for : traditional sdr teams on salesforce. See the complete Mailshake pricing page for tier comparison, credit cap behaviour, and annual-vs-monthly delta.
[Visit pricing](/tools/mailshake-pricing)

## Frequently Asked Questions

### Instantly vs Mailshake: when does each fit best?
Instantly is positioned as cold email outreach for agencies + cold-email-at-scale. Mailshake is positioned as sales engagement for traditional sdr teams on salesforce. Both compete in the cold email + sales engagement category, so the choice comes down to which best-for profile your team matches most closely. G2 reviewers rate Instantly at 4.8/5 and Mailshake at 4.4/5 — both products work, the deciding factor is workflow fit, not product quality.

### How do Instantly and Mailshake pricing actually compare in 2026?
Instantly entry-paid tier : Light Speed at $37/month. Next tier up is Growth ($47/month). Instantly's free tier : Free 14-day trial. Mailshake entry-paid tier : Starter at $29/user/month (annual). Next tier up is Email Outreach ($59/user/month (annual)). Mailshake's free tier : 30-day money-back guarantee. If you're looking past tier-based pricing entirely, Derrick App at $10/month covers unlimited rows enriched in Google Sheets — no credit caps, no per-seat math.

### What's the biggest reason to pick Instantly over Mailshake?
Private warm-up network is genuinely differentiated. 1.5M+ mailboxes inboxing each other across the network create real reputation signal that Gmail and Microsoft trust. Reviewers consistently report 5-15% higher inbox-placement rates after migrating to Instantly versus Smartlead, Saleshandy, or Lemlist warm-up alone. (Source : Andrei P., Cold Email Agency Operator, G2 review (Feb 2026).) If this single capability maps to a real pain in your sales motion, Instantly is the right pick over Mailshake.

### What's the biggest reason to pick Mailshake over Instantly?
Salesforce integration that actually works under load. Mailshake's Salesforce sync is bidirectional, real-time, and doesn't break under high-volume scenarios. Newer competitors' integrations are mostly write-only or batch-synced, which causes data inconsistency in CRM-led sales motions. (Source : Mei C., RevOps Director, G2 review (Feb 2026).) If this is the differentiator that matters most for your stack, Mailshake is the right pick over Instantly.

### Can Derrick replace both Instantly and Mailshake?
Both Instantly and Mailshake compete in the cold email + sales engagement category. Derrick is data-and-Sheets-native — it doesn't replace a full cold email + sales engagement platform feature-for-feature, but it eliminates the data + spreadsheet layer that teams typically use alongside Instantly or Mailshake. For teams whose primary need is enrichment + list-building in Sheets, Derrick at $10/mo replaces 60-80% of typical cold email + sales engagement stack workflows. For teams running heavy cold email + sales engagement feature surface (sequencer, dialer, AI agents), Derrick complements rather than replaces.

### Beyond Instantly and Mailshake, what other tools should I evaluate?
Four other tools in the same competitive set worth evaluating : Smartlead, Saleshandy, Lemlist, Apollo. Each has its own positioning trade-off versus Instantly and Mailshake — Smartlead typically appears as a direct competitor on G2 review pages, with Saleshandy, Lemlist, Apollo as adjacent picks for different team sizes or use cases. Each tool's full review on this site has the deep trade-off matrix — start there before shortlisting.