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Cold Email Bounce Rate: What It Is, Benchmarks, and How to Reduce It

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A bounced email is a cold emailer’s worst nightmare. It is an email wasted, a credit gone, a sending limit used, and most importantly, it can damage your domain reputation. Unlike low reply rates or poor open rates, a bounce is a direct signal to email providers that something is wrong. If it happens too […]

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 to Monitor Email Deliverability?

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Most cold emailers think “delivered” means “in the inbox.” It doesn’t. Real-time email deliverability monitoring is one of the strongest metrics that will lead to conversions. The way it works is simple: When you monitor email deliverability, you get a clear picture of how your campaign is performing and any potential deliverability holdups. In here, […]

Why Positive Cold Email Replies Don’t Equal Meetings

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On paper, your cold email campaign has been a success. You get great replies. But what happens after you start getting replies? Silence. No more interest in your service or product, no follow-up, no meeting booked. Most follow-up email cold email strategies fail to convert. No worries, though. This post is about tightening the gap: […]

13 Cold Email Mistakes To Avoid in 2026

Open email with a warning triangle and paper planes scattering away

Introduction Everyone makes cold email mistakes. That’s not the problem. The problem is making the same ones twice. Especially when the cold email landscape in 2026 is less forgiving than ever. Google and Yahoo’s bulk sender requirements have raised the floor. Inboxes are smarter, prospects are colder, and yet, cold email is still one of […]

Email Warmup Made Easy for Cold Email Success

Paper airplanes in formation with a red email leading the way

You’ve got your lead list, verified it, ensured your copy is perfect, and everything is in order. But your cold email still gets no replies. This is probably because it ended up in the spam folder. Now, there is no way for you to know, but there are a few reasons this could happen. One […]

What Is a Good Reply Rate for Cold Email? (2025 Industry Benchmarks)

Donut chart and bar chart with a benchmark line and reply bubbles

You’ve done your technical set-up, cleaned up, verified your lead list, and ensured your copy is perfect. You hit send…and then nothing. Sounds familiar? It’s the sad reality of most cold emailers. So, if you find yourself asking, “What is a good reply rate for cold emails?”, you’re at the right place. We’ll break down […]

What is Aerosend?

Server stack with interlocking gears, a shield, and a trend chart

We’re an inbox provider built for cold emails.  To make cold email successful, you need to send very few emails from 1 domain (60-75 emails/day/domain). To scale automated outreach, you need multiple domains and inboxes working together. This helps providers think you are not doing mass outreach, and your emails will land in the inbox. […]

What are Gmail’s Daily Email Sending Limits per day in 2026?

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Gmail is the most popular provider. But should you use it for cold email? If you’ve found yourself in the midst of the “you have reached a limit for sending mail Gmail” notification, you’ve likely reached the Gmail sending limit. Gmail sending limits are 2000 on paper. For cold emailers, it’s 25 per inbox. A […]

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Step 1 : Log in to Your Instantly Account
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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.

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Step 1 : Log in to Your Smart Lead Account
Go to https://app.smartlead.ai/login account and log in to your account
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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.