New

Domain Burn Alerts: free detection for SmartLead and Instantly. Domain Burn Alerts: free for SmartLead & Instantly

Check your domains

Cold Email Automation for Teams Who Don’t Want to Get Marked as Spam

Laptop showing a verified email next to smaller flagged spam messages

If you want any significant ROI from sending emails, cold email automation is the only way to do it. Instead of manually sending one-off messages, operators now use structured workflows that handle timing, personalization, and follow-ups so reps can focus on conversations and not admin work. Founders, SDR teams, solo consultants, and agency operators all […]

Is Aerosend the Best Mailgun Alternative for Email Deliverability?

Mailgun and Aerosend logos on a balanced scale

It’s not news that Mailgun can be unreliable for cold email. Mailgun relies heavily on shared IP pools by default, which means your deliverability is influenced by other senders. Mailgun is excellent for transactional email, but for cold outreach, shared IPs introduce serious risks. Even if you do everything right, like warm up safely, follow […]

Aerosend vs Infraforge: Which Cold Email Infrastructure Actually Scales?

Infraforge and Aerosend logos on a balanced scale

Infraforge is often marketed as a low-cost way to spin up mailboxes for cold outreach. On the surface, it looks appealing: simple pricing, quick access, and basic mailbox provisioning. But when teams try to scale cold email, Infraforge’s limitations surface quickly. Cold outreach requires isolated infrastructure, predictable deliverability, and real-time monitoring. Aerosend was built specifically […]

Coming Soon
SPF/DKIM/DMARC Checker Soon

Validate your email authentication

Blacklist Checker Soon

Check if your domain or IP is blacklisted

Email Spam Checker Soon

Test if your email lands in spam

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.