Buyer's guide · updated October 2026

The best cold email software in 2026

Eight tools compared on what actually matters: price, how many inboxes you can send from, warm-up, whether AI handles your replies, and whether lead data is included.

Quick comparison

ToolEntry priceInboxesAI handles repliesLead dataBest for
Asendify Outbound£29/month + 45% fee (£42.05)UnlimitedYes, includedUpload or done-for-youReplies handled for you
Instantly$47/monthUnlimitedPaid creditsYes, via creditsBig built-in database
Smartlead$39/monthUnlimitedSee plansSeparate productHigh-volume senders
Lemlist$69/monthUnlimited (Email plan)Yes650M+ databaseEmail + LinkedIn
Saleshandy$41/monthUnlimitedNot listedCredits includedBundled lead credits
Woodpecker$7 per 100 prospectsUnlimitedInterest detection100 free creditsSmall, irregular campaigns
Reply.io$59/user/monthUnlimited (fair use)AI SDR from $800/month50 credits/monthMultichannel sales teams
Mailshake$49/user/month2 per userNot listedSeparate planSmall teams

Disclosure: we make Asendify Outbound. Every price above is the entry list price on each company's pricing page in October 2026, monthly billing unless stated.

How to choose

1. Asendify Outbound

Unlimited inboxes, warm-up, multi-step sequences with A/B variants, one shared inbox, and an AI reply agent included on every plan. Base £29 (6,000 emails), Pro £79 (100,000 emails), Scale £179 (300,000 emails), each + 45% service fee. Done-for-you setup is available. No built-in lead database: upload your list or have us build it.

2. Instantly

A popular all-rounder with a large lead database sold through credits and an AI Reply Agent paid with credits. Growth outreach starts at $47/month.

3. Smartlead

Built for agencies and heavy senders, with add-ons such as inbox placement tests and dedicated servers. Base is $39/month for 6,000 emails.

4. Lemlist

The pick for email plus LinkedIn. The Email plan is $69/month for 50,000 emails and includes a 650M+ contact database; Multichannel is $109 per user per month.

5. Saleshandy

Similar limits to ours with lead finder credits bundled: Starter $41/month monthly ($34 yearly) for 6,000 emails.

6. Woodpecker

Pay per contacted prospect ($7 per 100), unlimited accounts, 4 warm-ups included. Good for small or irregular campaigns.

7. Reply.io

A multichannel sales engagement suite priced per user ($59/user/month to start) with AI SDR plans from $800/month.

8. Mailshake

Easy to use for small teams; $49 per user per month with 2 sending addresses per user.

Try Asendify Outbound free for 14 days

Unlimited inboxes, warm-up and the AI reply agent on every plan, from £29 a month + 45% service fee (£42.05 total). No card needed for the trial. Or let us set up inboxes, domains, copy and lists for you.

Questions

What is the best cold email software in 2026?

It depends on your needs. For an AI agent that answers replies included on every plan, Asendify Outbound (£29/month + 45% service fee). For a built-in lead database, Instantly or Lemlist. For email plus LinkedIn, Lemlist. For heavy agency volume with add-ons, Smartlead.

What is the cheapest cold email software with unlimited inboxes?

Among the tools here, Smartlead starts lowest at $39/month and Instantly is $47/month (2026 list prices). Asendify Outbound is priced in GBP at £42.05/month all-in (£29 + 45% service fee) with the AI reply agent included.

Which cold email tools answer replies with AI?

Asendify Outbound includes an AI reply agent on every plan. Instantly sells an AI Reply Agent paid with credits, Lemlist includes AI-generated replies, and Reply.io offers AI SDR plans from $800/month.

Asendify Outbound prices are in GBP; competitor prices are their USD list prices from each company's own pricing page, checked in October 2026. Prices change; check their site before you buy. Asendify Outbound is made by Asendify.