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Cold Email Tool Reviews

Honest, hands-on reviews of the inbox providers and tools we actually test.

Hypertide Review (2026): Features, Pricing, Pros and Cons

Hypertide Review (2026): Features, Pricing, Pros and Cons

Hypertide offers Azure inboxes, which, compared to Google Inboxes, have low deliverability success. Tenant isolation per order of 100 inboxes…
Cheapinboxes Review (2026): Features, Pricing, Pros and Cons

Cheapinboxes Review (2026): Features, Pricing, Pros and Cons

Cheapinboxes resells Google and Microsoft inboxes sourced from India. With admin access, an isolated workspace per domain, and inboxes billed…
Mailscale Review (2026): Infra, Features, Pros and Cons

Mailscale Review (2026): Infra, Features, Pros and Cons

I’ve deep dived into understanding Mailscale’s Agentic outreach methodology, and here’s my honest unbiased Mailscale review.
Infraforge Review (2026): Features, Pricing, Pros and Cons

Infraforge Review (2026): Features, Pricing, Pros and Cons

Infraforge is an infrastructure provider. It helps you to set up domains and inboxes based on your campaign requirement. It…
Premium Inboxes Review (2026): Features, Pricing, Pros and Cons

Premium Inboxes Review (2026): Features, Pricing, Pros and Cons

Premium Inboxes is a done-for-you Google and Microsoft inbox reseller with complete setup, sequencer integration, and founder-in-Slack support, priced from…
InboxImpacts Review (2026): Features, Pricing, Pros and Cons

InboxImpacts Review (2026): Features, Pricing, Pros and Cons

Most inbox providers only deliver you the inboxes. But InboxImpacts offers a complete cold-emailing infrastructure. It can set up your…
HyperInboxes Review (2026): Features, Pricing, Pros and Cons

HyperInboxes Review (2026): Features, Pricing, Pros and Cons

You must be going through a lot of HyperInbox reviews after the inbox provider paused all new signups. Given their…
GoBoxMate Review (2026): Features, Pricing, Pros and Cons

GoBoxMate Review (2026): Features, Pricing, Pros and Cons

GoBoxMate is a cold-email inbox service provider. They offer Indian-origin Google inboxes and handle DNS. It is suitable for agencies…
PuzzleInbox Review (2026): Features, Pricing, Pros and Cons

PuzzleInbox Review (2026): Features, Pricing, Pros and Cons

“Which one is better? PuzzleInbox or Aerosend?” In this PuzzleInbox review, I’ve gone through endless reviews + feedback on PuzzleInbox’s…
ScaledMail Review (2026): Features, Pricing, Pros and Cons

ScaledMail Review (2026): Features, Pricing, Pros and Cons

You’re here because you want to know whether ScaledMail is the right fit for your campaign. Most agencies search for…
InboxKit Review (2026): Features, Pricing, Pros and Cons

InboxKit Review (2026): Features, Pricing, Pros and Cons

Very few inbox providers offer all the different types of inboxes. InboxKit is special. It provides Google, Microsoft, and Azure…
Mailpool Review (2026): Features, Pricing, Pros and Cons

Mailpool Review (2026): Features, Pricing, Pros and Cons

If you want to run big cold email campaigns, and target 5,000 leads, you need 100+ inboxes. By diversifying across…
Zapmail Review (2026): Features, Pricing, Pros and Cons

Zapmail Review (2026): Features, Pricing, Pros and Cons

Two things that make this Zapmail review special – support quality and transparency. Their support service is actually legit –…
Maildoso Review: Features, Pros and Cons, Pricing Breakdown in 2026

Maildoso Review: Features, Pros and Cons, Pricing Breakdown in 2026

An unbiased Maildoso review: cheap shared-pool inboxes with fast setup, but mixed deliverability, a 2025 blacklist incident, and unpredictable support.

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How to Get Your Instantly API Key
Step 1 : Log in to Your Instantly Account
Go to https://app.instantly.ai/auth/login and log in to your account
Step 2 : Navigate to Settings

Click on your profile icon in the bottom-left corner, then select “Settings” from the dropdown menu.

Step 3 : Select Integration

In the Integrations page, click on the “API Keys” tab in the left sidebar.

Step 4 : Get Your API Key with all:read Scope

If you already have an API key with the all:read scope, you can use that key.


If not, click the “Create API Key” button, select the all:read scope, and make sure to save your new API key somewhere safe.

How to Get Your Smart Lead API Key
Step 1 : Log in to Your Smart Lead Account
Go to https://app.smartlead.ai/login account and log in to your account
Step 2 : Navigate to Settings

Click on the “Settings” option in the top right corner profile icon.

Step 3 : Select API Integration

In the Settings page, under your profile picture, you can see the SmartLead API Key.

Step 4 : Generate Your API Key

If you already have an API key displayed, you can use that key. If not, click the “Generate API Key” button to create a new one.