New

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

Check your domains

How to Improve Outlook Deliverability and Reach the Inbox

Verified email flying up to the inbox while flagged emails pile up below

This blog breaks down the current state of Outlook email deliverability, providing advanced strategies, crucial test results, and essential workflows to ensure your cold emails bypass the spam folder and consistently land in the target inbox. The core philosophy is clear: deliverability today is a matter of consistency, sophisticated testing, and the implementation of robust […]

How Alchemail Improved Deliverability and Reply Rates with Aerosend

Desktop monitor with a dashboard of rising charts and the Alchemail logo

Overview Alchemail is a cold email agency that helps businesses drive qualified meetings through scalable outreach. Arthur, Founder of Alchemail, has been running cold outreach since 2015, long before AI and automation became mainstream. Over the years, he has experimented with dozens of tools and private SMTP vendors, searching for a platform that could provide […]

List Building Secrets That Actually Matter in 2026

Contact folders and a growing bar chart of data lists

The brutal truth of cold email isn’t about the perfect subject line or the most persuasive copy; it is about the list. Without a high-quality list, your perfectly crafted message lands on dead ears, turning your outreach into nothing more than digital noise. It is the ultimate make-or-break factor in scaling revenue with cold email. […]

How ZalesMachine Boosted Reply Rates and Deliverability with Aerosend

Sales funnel with an email going in and coins dropping out, plus the ZalesMachine logo

Overview Founded by Nicolas Kwiatkowski, ZalesMachine is a sales automation agency based in Argentina that helps companies across the world implement AI, automation, and technology into their sales processes. The team runs high-performing outbound campaigns that combine personalization with scale, helping clients book more meetings and close more deals. In just a year and a […]

How Timelines AI Fixed Deliverability Issues Using Aerosend

Friendly teal robot with a satchel bag holding up an envelope

Overview Timelines AI is a B2B productivity platform that helps businesses connect WhatsApp with their CRM systems such as HubSpot, Zoho, and Monday. The platform enables teams to manage conversations, book demos, and automate workflows through WhatsApp, all from within their CRM. Like many SaaS companies that rely on outbound campaigns to drive growth, Timelines […]

Zoho Alternative for Cold Email Deliverability | Aerosend vs Zoho

Zoho Mail and Aerosend logos on a balanced scale

Zoho Mail is a trusted business email platform. It works well for everyday communication, managing support inboxes, or coordinating within teams. But when you try to use it for cold outreach, things start to break. That’s because Zoho was made for collaboration. Aerosend was made for campaigns. Aerosend gives you private cold email infrastructure with […]

How Kai Footprint Gets Hundreds of Cold Email Replies

Emails next to a rising "Kai" growth chart with dollar coins scattered below

Overview Kai Footprint helps businesses appear as recommended options inside ChatGPT, essentially providing SEO for AI. As the company grew, cold email became a core channel for driving awareness and customer acquisition. The team, led by founder Grayson Faircloth, sends thousands of emails every week and manages a large-scale outreach infrastructure with more than 2,000 […]

Best Google Inbox Alternative for Cold Email Deliverability

Google Inbox and Aerosend logos on opposite sides of a balance scale

Google Inboxes is great for daily communication, collaboration, and running business email. It integrates smoothly across tools, making it the default choice for many teams. But when you use Google for cold outreach, performance drops sharply. That’s because Google Inboxes was designed for productivity, not prospecting. Aerosend was designed for cold outreach and deliverability. Aerosend […]

Why Email Outreach Company Switched from MailDoso to Aerosend

Email on a Maildoso pedestal with an arrow pointing to an Aerosend pedestal

Overview Email Outreach Company (EOC) is an agency that helps businesses of all sizes, from Fortune 500s to early-stage startups, generate leads through cold email. With more than four years of experience running outbound campaigns, the team has tested nearly every major inbox provider in the market, including MailDoso (see our in-depth Maildoso review) and […]

How CallPad Improved Inbox Placement and 4x’d Reply Rates with Aerosend

Laptop with an analytics chart, a gear icon, and an email

Overview CallPad helps salons and small businesses capture missed calls, manage bookings, and answer customer questions so that every potential customer gets a response. Before using cold email, their outreach relied on phone calls, making up to 100 calls a day. It was time-consuming and inefficient, often resulting in just one or two conversions. To […]

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.