Comparison
Best Cold Email Software & Outreach Tools (2026)
The best cold email software for most teams is Instantly or Smartlead for volume, lemlist or Reply.io for multichannel, and Apollo if you also need data. Here's how eight outreach tools compare on price, mailboxes and warmup.
- 1InstantlyUnlimited inboxes
- 2SmartleadUnlimited inboxes
- 3lemlistEmail + LinkedIn
- 4GMassInside Gmail
Compared
The best cold email software, side by side
Entry prices from each vendor's pricing page, checked October 2026. Monthly billing unless noted; most are cheaper billed annually.
| Tool | Entry price | Mailboxes | Warmup | Best for |
|---|---|---|---|---|
| Instantly | $47/mo (Growth) | Unlimited | Unlimited, every plan | High-volume sending across many inboxes |
| Smartlead | $39/mo (Base) | Unlimited | Included; pool tier by plan | Agencies and high-volume senders |
| lemlist | $69/mo (Email) | Unlimited senders | lemwarm included | Personalized email, plus LinkedIn and calls on Multichannel |
| Apollo | Free plan; Basic $65/seat/mo ($49 billed annually) | 1 per user on Free and Basic | From Basic | Contact data and sequences in one tool |
| Reply.io | $59/user/mo (Email Volume) | Unlimited (fair use) | Included (fair use) | Sales teams adding LinkedIn, calls or an AI SDR |
| Woodpecker | $35/mo (500 prospects) | Unlimited | 2 included; $5/mo each extra | Small teams paying per prospect contacted |
| Saleshandy | $41/mo (Starter) | Unlimited | Unlimited | Budget all-in-one outreach |
| GMass | $29.95/mo (Standard) | One Google account; rotation from Premium | Not included | Campaigns and mail merge from Gmail |
Entry price per month, monthly billing
October 2026. Apollo is priced per seat ($49 a seat billed annually) and also has a free plan.
| GMass | $29.95 |
|---|---|
| Woodpecker | $35 |
| Smartlead | $39 |
| Saleshandy | $41 |
| Instantly | $47 |
| Reply.io | $59 |
| Apollo | $65 |
| lemlist | $69 |
Cold outreach automation
What a cold email tool automates
Every email outreach platform on this list runs the same loop. What differs is price, how many mailboxes you can rotate and which extra channels come with it.
Step 1
Import a list
From a CSV, CRM or the tool's own database.
Step 2
Verify
Remove bad addresses before they bounce.
Step 3
Rotate inboxes
Spread sends at about 30 a day per mailbox.
Step 4
Follow up
Multi-step sequences that stop on reply.
Step 5
Handle replies
One inbox for every mailbox's replies.
How to choose a cold email tool
- Count mailboxes first: tools with unlimited mailboxes cost the same at 10 inboxes or 200.
- Check what the plan caps instead: monthly emails, active contacts or contacted prospects.
- Prefer warmup that's included, so you aren't paying per inbox for it.
- Make sure your mailboxes connect by OAuth to Google and Microsoft, not only by password.
- If you buy mailboxes or domains inside the tool, check who owns them if you leave.
Head to head
Instantly vs Smartlead
The two most common choices for high-volume cold email. Published terms, October 2026, monthly billing.
| Instantly | Smartlead | |
|---|---|---|
| Entry plan | Growth: $47/mo, 5,000 emails, 1,000 contacts | Base: $39/mo, 6,000 sends, 2,000 contacts |
| Second plan | Hypergrowth: $97/mo, 125,000 emails, 25,000 contacts | Pro: $94/mo, 90,000 sends, 30,000 contacts |
| Top self-serve plan | Light Speed: $358/mo, 500,000 emails | Prime: $379/mo, 500,000 sends |
| Email accounts | Unlimited | Unlimited |
| Warmup | Unlimited, every plan | Included; warmup pool tier rises with plan |
| Connect Google & Microsoft | OAuth or app password; Microsoft by OAuth | Google OAuth, Outlook or SMTP |
| Buy mailboxes in the app | DFY Google $5/mo, pre-warmed $10/mo; Instantly keeps the domains | SmartSenders marketplace (Google, Outlook, SMTP) |
| Free trial | 14 days, 1,000 emails, 250 contacts | Free trial, no card needed |
Smartlead vs Instantly mostly comes down to volume. Up to 6,000 emails a month, Smartlead's Base plan is the cheaper start. Between 90,000 and 125,000 a month, Instantly's $97 plan covers it while Smartlead's next step up is $174. Smartlead also lets Smart and Prime customers connect mailboxes through their own OAuth app. Both work with the same Google and Microsoft mailboxes, so you can test one and switch. Setup guides: Instantly mailboxes · Smartlead mailboxes. Full breakdown: Instantly vs Smartlead.
Mailboxes
Every outreach tool still needs mailboxes
A plan's send allowance is only useful if you have the inboxes to send it safely. At about 30 cold emails per mailbox per day over 22 sending days:
| Plan | Emails / month | Mailboxes needed | Jetmail / month* |
|---|---|---|---|
| Instantly Growth | 5,000 | 8 | $39 |
| Smartlead Base | 6,000 | 10 | $39 |
| Smartlead Pro | 90,000 | 137 | $410 |
| Instantly Hypergrowth | 125,000 | 190 | $569 |
*Standard Jetmail mailboxes, cheapest plan for that count, billed monthly. Domains billed separately.
Mailboxes that work with every tool on this list
By use case
Which email outreach platform fits you
- Sending at volume from many inboxes: Instantly or Smartlead.
- Email plus LinkedIn and calls: lemlist Multichannel or Reply.io. Weighing lemlist? See lemlist alternatives.
- Need contact data in the same tool: Apollo. Compared with a sending tool in Instantly vs Apollo.
- Small list, tight budget: Woodpecker or Saleshandy.
- Working from Gmail: GMass.
Picking infrastructure too? Compare providers in best cold email infrastructure.
Sources: Instantly pricing · Smartlead pricing · Smartlead: connect a mailbox · lemlist pricing · Apollo pricing · Reply.io pricing · Woodpecker pricing · Saleshandy pricing · GMass pricing · GMass: warmup shutting down · Instantly: DFY email setup
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Or see pricing →Frequently asked questions
What is the best cold email software?
It depends on how you sell. For high-volume email across many inboxes, Instantly and Smartlead are the usual picks. lemlist and Reply.io suit teams that also use LinkedIn and calls, Apollo bundles a contact database, and GMass works inside Gmail.
Instantly vs Smartlead: which is better?
Both include unlimited email accounts and warmup. As of October 2026, Smartlead starts cheaper ($39 vs $47 a month), while Instantly's second plan allows more monthly emails (125,000 at $97 vs 90,000 at $94). Smartlead adds private OAuth on its top two plans, and both sell mailboxes in the app.
What is a cold email tool?
Software that sends personalized email sequences from your own mailboxes, spreads volume across them, follows up automatically, stops when someone replies and reports results. It doesn't usually include the mailboxes or domains themselves.
Do cold email tools include mailboxes?
Most connect to mailboxes you bring. Several sell them as an add-on, but terms vary: Instantly, for example, keeps ownership of domains bought through it. Owning your domains lets you switch tools without rebuilding.
Is there free cold email software?
Apollo has a free plan (Gmail accounts only, 2 sequences), and most others offer a trial: Instantly gives 14 days with 1,000 emails, Saleshandy 7 days. Warmup is usually included in the paid plan rather than sold separately.
What is cold outreach automation?
Automating the repeatable parts of outbound: importing and verifying a list, sending a multi-step sequence from several mailboxes, pausing on replies and routing interested replies to a person. The research and the reply itself still need a human.