6 Best Cold Email Tools to Boost Your Reply Rates in 2025

Ever spent hours crafting what felt like the perfect cold email? But long after you hit send, you've got nothing. No replies; just dead silence. 

You see, most of the time, your cold email tool may be exacerbating the issue. The wrong tool will send your emails straight to spam. But the right one will get them opened, read, and replied to.

That’s why more people are switching to Instantly. This tool stands out as one of the top cold email options in 2025 and has quietly become a favorite for B2B teams. In this guide, we’ll provide you with a comprehensive overview of tools that actually increase your reply rates.

Comparison of the 6 Best Cold Email Tools for Boosting Replies

Tools	Top Features	Starting Price
Instantly	B2B lead database, All-in-one outreach, and Unlimited email warm-up	$37.9/month
Saleshandy	B2B lead finder	$36/month
Reply	Multichannel outreach	$59/month
Snov.io	Bulk email and contact verification	$39/month
Smartreach	15% email deliverability	$29/month
Apollo	Built-in B2B database	$49/month
Mailshake	LinkedIn automation	$45/month

1. Instantly

If you’re sending cold emails and getting no replies, Instantly could be the tool you’ve been missing. It’s an AI-powered cold email platform focused on speed, scale, and deliverability. With features like automated warm-up, A/B testing, and smart inbox rotation, it instantly helps your emails land where they’re supposed to.

Instantly also includes email and contact verification, so you’re not wasting time sending to dead or outdated leads. Its pricing starts at $37.9/month when billed annually, and it has a 4.9/5 rating on G2.

Key Features of Instantly

• List Integrity Protection: Provides email and contact verification features that keep your outreach list up to date, minimizing the chances of sending to a bounceable address.
• Verified B2B Contact Database: Instantly offers access to over 450 million verified B2B contacts, with built-in email verification to help you target the right leads and increase reply rates.
• Unlimited Sending Accounts: You get unlimited email sending accounts with smart inbox rotation across campaigns.
• Unified Inbox (Unibox): Instantly lets you manage all your email responses from a single centralized dashboard. 
• AI-Powered Personalization: You can use AI to send personalized responses at scale. 

2. Saleshandy

Saleshandy is a sales engagement tool that enables companies to smoothly scale cold email outreach efforts more effectively by offering verified lead data and personalized follow-up sequences. Pricing starts at $39/month.

Pros of Saleshandy

• Saleshandy automates follow-ups to keep the campaign running 24/7.
• It offers verified leads to improve outreach quality.

Cons of Saleshandy:

• Lead verification requires extra credit after a certain limit.
• Many of its features are locked behind high-tier plans.

3. Reply

Reply is a multichannel cold email outreach software that allows businesses to reach out to their possible business prospects through various channels like email, LinkedIn, SMS, and phone calls, all from a single platform. Pricing starts at $99/monthly.

Pros of Reply

• It integrates various tools like HubSpot to streamline workflow.
• It has an easy-to-navigate interface, making follow-ups easy for even less technical users.

Cons of Reply

• The pricing may be a concern for some users, depending on their budget.
• Some users report that LinkedIn integration can be inconsistent at times.

4. Snov.io

Snov.io is an all-in-one sales automation platform that provides users with services, including identifying and confirming leads at scale from various internet sources, such as LinkedIn and company websites. 

Pros of Snov.io 

• Snov.io is a budget-friendly option for startups seeking to scale their cold email outreach.
• It helps you improve response rates with built-in automation tools. 

Cons of Snov.io

• Its credit-based system limits usage for high-volume campaigns.
• Users may need frequent upgrades as their outreach needs grow.

5. Apollo

Apollo is a cloud-based sales platform that specializes in email marketing and lead creation for B2B organizations looking to expand their reach to targeted leads. It boasts a vast database of over 275 million contacts. Pricing starts at $49/month.

Pros of Apollo

• Its search tool enables users to find leads based on certain criteria, such as job title, location, and industry.
• It has a Chrome extension that lets users access Apollo features directly from their browser. 

Cons of Apollo

• Some users report that information can be outdated or incorrect, which may cause higher bounce rates. 
• It integrates with niche popular tools, but lacks support for less common platforms.

6. Mailshake

Mailshake is a sales engagement tool focused on cold email and LinkedIn automation. It helps you send personalized outreach in bulk, all from one central dashboard. Pricing starts at $29/month.

Pros of Mailshake

• Mailshake's user-friendly UI makes cold email campaign setup simple.
• Includes list cleaning features to remove high-risk emails, ensuring your emails land in valid inboxes.

Cons of Mailshake

• Mailshake limits the number of emails and LinkedIn messages you can send daily, which may be inconvenient for larger sales teams.
• It lacks advanced personalization features.

Turn Your Cold Email Outreach Into Real Conversations

Cold emailing hasn’t exactly gotten harder; it's just more competitive. And with that shift, many SMBs and sales professionals are noticing that response rates are dropping fast. That’s why you need Instantly to help you stay ahead and actually improve your chances of getting a reply.

Among these tools, Instantly stands out as the best because it keeps your emails out of spam folders, has no sending limits, can personalise emails at scale, and provides powerful analytics to optimize what’s working. So, if you're tired of your cold emails getting ignored, perhaps it's time to try something different.