Cold email software that writes, sends and books meetings

Short answer

Cold email software sends personalised email sequences from managed mailboxes and stops when people reply. Outbound Labs goes further: its agents also build the target list, verify every address, write each email from public signals and book the meetings, and you approve every campaign before it sends.

Mailboxes: 5 warmed on Growth, 25 on Scale
Daily limit: Up to 40 emails per inbox by default
Safety: Auto-pause above 2% bounce
Price: From $149 a month; 750 emails free

What should cold email software do?

Protect deliverability. SPF, DKIM and DMARC set correctly, mailbox warm-up, inbox rotation and daily limits.
Personalise at scale. A first line that refers to something real about the recipient, not just their first name.
Run multi-step sequences. Follow-ups that stop the moment someone replies, on any channel.
Handle replies. Sort interested, not now and unsubscribe, and act on each.
Report what works. Replies and meetings by campaign, not just open rates.

How Outbound Labs handles each step

Step	What happens
List	The Prospector finds matching companies and decision makers through B2B data provider APIs and verifies every email.
Writing	The Writer drafts a different first line for each person from a public signal, in your tone.
Approval	Campaigns arrive as cards in the app, by email or in Slack. Nothing sends until you approve.
Sending	The Sender uses warmed mailboxes, rotates inboxes, sends in the recipient’s working hours and pauses a campaign if bounces pass 2%.
Replies	The Closer sorts replies, answers simple questions and books meetings on your calendar.

Cold email software prices

Senders that leave the list and the writing to you cost less per month. Prices below were checked on 16 October 2026; sources are listed at the end of the page.

Tool	Entry price	Billing
Instantly	$37 / month (annual) or about $47 monthly	Per workspace
Smartlead	$39 / month	Per workspace
lemlist	$55–69 per seat / month	Per seat
Apollo	Free plan; paid from $49 per user / month	Per seat plus credits
Woodpecker	From $7 / month per 100 prospects	Usage-based
Outbound Labs	$149 / month for 5,000 emails	Monthly plan, list building and writing included; contact data billed by your data provider

When is a plain sender the better choice?

If you already have a good list, enjoy writing your own emails and have time to handle replies, a sender such as Instantly or Smartlead costs less. Choose an AI SDR when the list building, writing and follow-up are the work you do not have time for.

Frequently asked questions

What is cold email software?

Software that sends personalised email sequences to people who have not contacted you before, from mailboxes it manages for deliverability. Most tools also track replies and stop the sequence when someone answers.

What is the best cold email software for a small team?

If you already have a list and like writing your own emails, a sender such as Instantly or Smartlead is the cheapest option. If you want the list building, writing and reply handling done too, an AI SDR such as Outbound Labs does that work and asks you to approve each campaign.

Will cold email hurt my domain?

It can if you send from your main domain or send too much too soon. Send from separate domains, set up SPF, DKIM and DMARC, warm each mailbox up slowly and keep bounce rates low.

How many cold emails can I send per day?

A common safe limit is 30 to 50 emails per mailbox per day after warm-up. Teams send more by adding mailboxes, not by pushing one mailbox harder. Outbound Labs sends up to 40 per inbox per day by default.

Cold email software that does the whole job

What should cold email software do?

How Outbound Labs handles each step

Cold email software prices

When is a plain sender the better choice?

Frequently asked questions

Sources

Related

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