The 8 best cold email software options in 2026

As a serial email deleter, I know how hard it is to get people to open a cold email. But I've also had the unique privilege (yes, I'm calling it a privilege) of being a sender of cold emails. 

I know that personalizing hundreds of emails, scheduling sequences, and replying to leads that bite takes time—so much time that doing it manually is impossible once you have a sizable prospect list. 

Cold email software speeds up and optimizes your outreach. If you're looking to try out a cold email app and you don't know where to start, you're in the right place. I spent time researching and testing some of the most highly regarded cold email tools available. Here's what I learned.

The best cold email tools

• Hunter for freelancers and cold email beginners

• lemlist for deliverability optimization

• Instantly for easy scaling

• Woodpecker for condition-based campaigns

• Apollo for combining prospecting and outreach in one platform

• GMass for managing email campaigns via Chrome extension

• Mailshake for multichannel cold outreach

• Saleshandy for getting started with outreach

What makes the best cold email tool?

If you haven't gotten your hands dirty actually testing cold email tools, it might seem like they all do pretty much the same thing—sending emails to strangers and then sending more when they don't respond. And yes, they do that. But there are differences, both major and subtle, and the apps I selected distinguished themselves in these four core areas:

• Automation and scheduling: How much of the workflow can you automate?  And if you schedule an email sequence, do you have to babysit it to make sure it goes smoothly? A good cold email app needs to make your job easier. 

• AI features: Are there AI features to speak of, and how helpful are they? Does the software just include a basic writing assistant, or does it do something innovative with AI to enhance discovery or automation?

• Deliverability: Will emails sent using the app land in your lead's main inbox? At a basic level, cold email software is useless if it can't make it past the average spam filter. Email warm-up is a must.

• Analytics: What kind of data can you access for your email campaigns? Does it show more than just bounce and open rate? Without detailed analytics, you won't be able to measure how well your cold email outreach is performing.

• Integrations: Can the app sync with major CRMs and other tools in your marketing and sales stack? Integration capabilities determine how well a cold email tool fits into your existing workflows.

The best cold email software at a glance

Best cold email software for freelancers and cold email beginners

Hunter (Web)

Hunter pros:

• Extensive free plan

• User-friendly interface

• Domain search feature

Hunter cons:

• Limited email account connections, even on higher-tier plans

If you're new to the cold email game, free trials and free plans will be your best friend. While some apps offer heavily restricted free plans, Hunter lets you test out campaigns with 500 recipients per sequence and gives you access to analytics, browser extensions, and CRM integrations—all without spending a dime.

When I signed up, I was greeted with a crisp, easily digestible interface and a basic suite of email and lead generation tools: a lead searcher, campaign creator, lead verifier, campaign manager, and a few others. If you're a cold email novice, these basics are likely all you'll need. And even if you never upgrade to a paid plan, you'll have permanent access to Hunter's integrations with Zapier, HubSpot, Salesforce, Pipedrive, and more.

While lighter on AI than other software in this list, Hunter has a couple of cool AI features to help you along the way, especially if you're struggling to build prospect lists. Within Hunter's B2B database, you can use the AI assistant to help you discover new prospects by describing your ICP. There's also an MCP server, so you can query Hunter directly from your AI assistant.

But for freelancers with limited email campaign needs, Hunter's free plan might be all you need. If not, it's still an excellent app to learn the ropes of cold email, as it's been designed with beginners and startups in mind. For users with more extensive outreach needs, Hunter's scaling options leave something to be desired—even the pricey Scale plan ($209/month) is limited to 20 email accounts.

By connecting Hunter to Zapier, you can automate all your cold email workflows. For example, you can automatically validate new leads from any source and send them to your other sales and marketing apps—without any manual effort.

Hunter pricing: Free plan is free forever and lets you run one 500-recipient campaign at a time; paid plans start at $34/month, paid annually and include unlimited team members

Best cold email app for deliverability optimization

lemlist (Web)

lemlist pros:

• Built-in deliverability hub with domain health monitoring and proactive alerts

• 650M+ lead database with waterfall enrichment from 25+ data providers

• True multichannel outreach (email, LinkedIn, calls, WhatsApp, SMS) in one workflow

lemlist cons:

• Higher entry price vs. some of the tools, especially for multichannel features

lemlist focuses on deliverability, with tools like automated warm-up processes and spam alerts, which makes it attractive if you're running high-volume outreach across multiple domains. 

lemlist has an internal agent to help you build automations, but I'd argue that the best AI feature are the AI agents that can take external actions. They'll research leads by pulling data from LinkedIn profiles, websites, and sales call recordings; track intent signals from real-time events like job changes or fundraising rounds; then, crucially, turn that information into structured data you can use in automated personalization.

And all this is backed by lemlist's database of 650+ million leads. The all-in-one pitch here is pretty darn good: Start with the verified lead database, use AI agents to prospect beyond it, and run personalized sequences with high deliverability.

My main complaints are the interface and the pricing. The layout feels like it was built by two dueling dev teams with their own creative ideas about UX. Example: there are two tabs in two different menus for the same AI agent, but each opens a different interface. And while the Email plan ($31/month, paid annually), which includes unlimited users, feels reasonable, to unlock LinkedIn automation, calling, SMS, and the full multichannel stack, you'll need the Multichannel plan at $87/user/month. Per-seat pricing can add up fast. 

lemlist is easy to integrate with the rest of your stack. You can use the lemlist MCP to work straight from your favorite AI assistant, and you can integrate it with Zapier, so you can do the same thing across your entire tech stack. So you could, for example,  pull from the lemlist database, add those newly enriched leads to your CRM, and create new email lists—all from your chat window. 

lemlist pricing: Offers 14-day free trial; paid plans start at $31/month, paid annually, Multichannel at $87/user/month for a full channel stack

Best cold email tool for scalability

Instantly (Web)

Instantly pros:

• Unlimited email accounts and warm-ups

• Clean, legible interface

• AI-powered automations for lead management

Instantly cons:

• Database and AI agent features are gated behind an additional fee

As your business grows, your outreach needs will likely grow with it. To scale your campaigns, you'll have to send more emails to more people (and use more accounts to do it). While this may sound simple, it's important to ensure your cold email software of choice can keep up with you.

Instantly is all about scalability. Even on the basic Growth plan ($37.60/month), you'll be able to connect and warm up unlimited email accounts from any provider. And however many accounts you use, they can all be accessed from one convenient "Unibox." Now, you won't be able to send unlimited emails—there's a 5,000 monthly email limit for the Growth membership—but no app lets you do that without shelling out some serious dough.

If and when you're ready to upgrade, Instantly's Hypergrowth plan ($77.60/month) will net you a whopping 100,000 monthly emails, plus advanced warm-up capabilities to ensure they all make it past the dreaded spam filter. Fortunately, the app doesn't get any harder to use when you're dealing with big numbers. You'll use the same basic campaign tools whether you're targeting 50 opens or 50,000.

The interface is incredibly easy to use, and I was able to set up a test campaign in a matter of minutes. But while you can automate your sequences and follow-ups, you'll quickly encounter a block if you're looking for advanced automation across prospecting, research, and sequencing.

There are a ton of AI features here: a sales agent that independently discovers, researches, and outreaches prospects, an inbound reply agent that responds to prospects 24/7, and a deliverability agent that monitors and fixes your sending health. But keep in mind that the credits are bundled with the lead database, separately from the outreach plans.

Instantly has a standard range of integrations, although it really wants people to try out its new, proprietary CRM. And it connects to a few popular platforms like Slack, HubSpot, and Pipedrive, but you can use Zapier to connect Instantly to thousands of other apps too. Learn more about how to automate Instantly.

Instantly pricing: Offers a 14-day free trial; paid plans start at $37.60/month  on the Growth plan with unlimited email accounts

Best cold email software for condition-based email campaigns

Woodpecker (Web)

Woodpecker pros:

• AI interest level analysis

• Lots of native integrations

• Personalized email sequences

Woodpecker cons:

• Barebones analytics

• Limited number of warm-up email accounts

Woodpecker is a very straightforward cold email app. It doesn't try to break the mold or masquerade as a fully-fledged CRM—it helps you craft email sequences and delivers them to the right place (not the spam folder). 

Woodpecker's AI email writing tool makes this process faster and easier. As I was writing my first test email, I saw a prompt to generate it with AI. This opens a window where you can enter a prompt (write me an email with XYZ), select a tone of voice (like formal or informal), and a text length (from short to "super long"). Other apps have AI generators and assistants, but they don't run as smoothly as Woodpecker's. If email outreach was my day job, I'd be using this tool all the time. 

There are a few other AI features to like here, such as interest level detection. The AI flags key indicators of interest in responses, and then you can sort and prioritize replies by that interest level.

The rest of the app's features are a bit more standard. You can automate and personalize follow-ups, verify the addresses on your prospect list, and see your campaign stats using a somewhat meager analytics suite.

It's also worth noting that Woodpecker limits users to two free warm-up email accounts. If you want more, you'll have to pay an extra $5/month per inbox. 

Overall, Woodpecker is a solid tool for businesses with modest cold email needs, especially if AI email generation is important to you. Plus, it integrates natively with a range of CRMs and tools, and you can use Zapier to connect Woodpecker with thousands of other apps.

Woodpecker pricing: Offers a 14-day free trial; paid plans start at $24/month, paid annually, for 500 prospects per month, and include unlimited team members

Best cold email app for using a B2B database to find leads

Apollo (Web)

Apollo pros:

• AI assistant for writing, research, filtering, and building multichannel campaigns

• Large B2B database

• Extensive free plan

Apollo cons:

• Analytics are exclusive to premium memberships

• Has a learning curve

Apollo advertises itself as a complete, end-to-end sales platform. That's because, in addition to cold email, it helps you find and vet prospects, make calls and social media requests, and automate workflows from start to deal close. 

Apollo has an excellent free plan that lets you test most of the app's functionality without ever signing up for a subscription. I used this plan to try out its cold email tool and found it fast and user-friendly. 

As soon as you start building your first email sequence, you're greeted with a helpful (optional) tutorial video and a button to generate the sequence using AI. If going full AI doesn't appeal to you, the software offers pre-built templates, so you never have to start from scratch. All of this works on the free plan, but you'll be limited to two active email sequences at a time.

Another key selling point is the B2B database, which Apollo refreshes monthly. With it, you'll get access to 128 million business and personal emails, with 144 million phone numbers. The verification and refreshing is big here, because lead databases can get stale fast: good upkeep can make a smaller database more valuable than a larger one. So, if you want an app that rolls cold email and lead prospecting into one comprehensive package, Apollo may be your best bet.

The one catch here is the warm-up. While Apollo's paid plans have a warm-up tool, it's offered through third-party providers and is less comprehensive than other tools with native email warm-up features.

Apollo offers a standard range of integrations, plus a proprietary Chrome extension that pulls lead information from platforms like LinkedIn and Gmail. You can also use Apollo's Zapier integration to connect Apollo with all the other apps in your workflow. Learn more about automating Apollo.

Apollo pricing: Free plan is free forever and lets you run two active sequences; paid plans start at $49/user/month, paid annually, for the Basic plan

Best cold email tool for managing email campaigns via Chrome extension

GMass (Web)

GMass pros:

• Works inside Gmail

• Syncs with Google Sheets

• Refreshingly simple

GMass cons:

• Less functionality than other apps 

• Requires a separate subscription for each email account

GMass runs entirely in Gmail using a Chrome extension. If learning a new platform scares you like it scares me, GMass might be just what you need.

While GMass used to offer a free plan (for sending up to 50 emails a day), now you'll need to start a free trial to test it out. It's as simple as adding the GMass extension to Chrome on the same account you use for Gmail. Then, whenever you compose an email, you'll see a new GMass button next to the send button.

Although this is a simpler tool than other apps on this list, it has a broad range of features, including A/B testing, automatic follow-ups, email testing, and campaign metrics. But you won't be creating full sequences in seconds using AI, scheduling meetings, or automating lead engagement like you might on other platforms. This one is strictly about email.

If you want to use GMass efficiently, it's best to sync it with Google Sheets. This way, if you have spreadsheets containing lead contact information, GMass can use them to create email contact lists. 

GMass is by far the easiest way to send mass emails directly from Gmail, and it practically dominates its niche. Despite its relative simplicity, the tool is a bit costly at $20/month per email account (paid annually), but if you want to avoid opening a can of new software worms, it's worth a close look.

And you can do even more with GMass by integrating it with Zapier, so you can connect GMass to all the other apps you use and create automated cold outreach workflows. You'll need the GMass Premium plan ($29/month) for native functionality with Zapier. 

GMass pricing: Offers a 7-day free trial; paid plans start at $20/user/month, paid annually, for the Standard plan for individuals.

Best cold email software for multichannel cold outreach

Mailshake (Web)

Mailshake pros:

• Handles cold email, cold calling, and cold connecting on social media

• Great for lead management

• Easily add existing email templates

Mailshake cons:

• Limited prospect data

• Tricky to learn

If you want your cold email software to pull double (or triple) duty, consider giving Mailshake a shot. 

It's a very solid platform for email outreach—complete with an aptly-named AI email writer called SHAKEspeare, but quite a few features are locked behind higher tiers. You need the $45/month plan to get a unified inbox and integrations with common CRMs like Salesforce and HubSpot.  

If you want to expand into multichannel sequences, the Sales Engagement plan ($85/month, paid annually) gives you access to unlimited dialer minutes across five phone numbers. 

Even if you stick to the cheaper, email-specific plans, you'll be getting a lot of value out of Mailshake thanks to unlimited warm-up and automated sequences. Its Lead Catcher stores all your leads in one place, letting you reply to their messages with one click and mark prospects as won, lost, or ignored. 

Mailshake also offers a lead database, but it's much more limited than the ones offered by competitors. You might also have some trouble with its strict spam compliance filter, which sometimes marks emails as "risky" without giving context. 

As far as integrations go, Mailshake does what you'd expect: it connects to Salesforce, Pipedrive, and HubSpot, but also Calendly (for scheduling) and Twilio (if you want to do SMS on top of email). Zapier's Mailshake integration has you covered for integrating with the other apps you use on a daily basis and letting you work with Mailshake directly from your AI assistant. Learn more about how to automate Mailshake.

Mailshake pricing: No free trial available; paid plans start at $25/user/month, paid annually on the Starter plan

Best cold email outreach software for getting started

Saleshandy (Web)

Saleshandy pros:

• Unlimited email accounts on all plans

• Sequence Score pre-send deliverability rating

• 852M+ verified B2B contact database

Saleshandy cons:

• Busy, overcomplicated interfaces

• Active prospect limits feel restrictive at the base tier

Saleshandy's pitch is simple: pay less for more. It lets you send from as many email addresses as you need, and at $25/month (paid annually), it includes many features that other tools charge significantly more for or gate behind higher tiers. 

As for those features: you'll get automated warm-up sequences, a Copilot-based AI email sequence builder, and MCP access. There's even a built-in CRM. If you need to scale sending volume, this is a great bang for your email buck. 

The standout deliverability feature is Sequence Score, a pre-send rating that evaluates your campaign before it goes out and flags potential inbox placement issues. To help keep that score where you want it, when you're writing emails, there's a handy meter that detects spammy-sounding language as you write emails.

The tradeoff is scope. The Starter plan caps you at 2,000 active prospects and 6,000 emails per month, which works fine for early-stage outreach but gets cramped quickly as your list grows. 

Connecting Saleshandy to Zapier lets you get even more bang for your very-little-buck. You can automatically add new prospects to Saleshandy or make sure your CRM is updated with the latest data. Start workflows automatically based on triggers, or use Zapier MCP to kick things off directly from your AI assistant.

Saleshandy pricing: Plans start at $25/month, paid annually.

Other cold email apps

There are dozens of cold email tools on the market, and it's worth shouting out some great apps that didn't quite top the ones I selected.

• Klenty is an AI sales engagement platform with advanced features like AI call coaching.

• Salesforge has unlimited email warm-up and an extensive AI toolset.

• Autoklose offers a built-in prospect database and sales tracking functionality.

• Reply includes AI sales development representative (SDR) agents. 

• Snov.io benefits from strong multichannel outreach capabilities and a wide range of email campaign templates.

• SmartReach has an AI assistant that can generate subject lines and bodies and tweak existing copy.

• MailRush.io generates templates for a wide variety of email outreach campaigns.

• Overloop can facilitate multichannel outreach with a slick user interface.

Other tools you might need for cold email

While some cold email apps include CRM and lead enrichment features, they don't typically exist in a vacuum. This means you'll need to pair your email platform of choice with other tools to get the best results for your outreach efforts.

• Lead enrichment: Certain cold email apps (like Apollo) can handle lead data enrichment for you, but you may need to consider a separate service that specializes in it, like Clay or Cognism.

• Chatbots: Many cold email tools incorporate some form of AI assistance, but you can also use AI chatbots like ChatGPT and Gemini to help you create your campaigns. Try these ChatGPT prompts that generate usable sales emails. 

• CRMs: This might seem like an obvious one since virtually every cold email app integrates with one or more CRMs, but it's worth reiterating. Check out Zapier's roundup of the best CRMs to see which one aligns best with your company.

You can then connect your cold email app to all these other tools using Zapier, so your cold outreach workflows can run automatically.

Related reading:

• The best productivity apps

• A guide to putting your email to work, automatically

• The best marketing automation software

• The best email drip campaign software

• Popular ways to automate Recruit CRM

This article was originally published in July 2024. The most recent update was in July 2026.