Best AI cold email tools in 2026
Eight AI cold email tools (software that finds prospects, writes and sends cold email and handles replies), compared by public price, contract and sending setup. Competitor facts are from each vendor's own site, read 2026-09-24; Explee read 2026-10-01.
The list
- Krabat (krabat.ai). $0.05 per email sent, no subscription. Builds the lead list from your website URL for free, writes the emails, sends from its own pre-warmed inboxes, answers replies and books meetings.
- Explee (explee.com). Pay-as-you-go AI outbound at $0.04 per email; $30 card credit covers 750 emails.
- AiSDR (aisdr.com). Monthly plans priced by researched contacts, from $250/month for 200 contacts; email plus LinkedIn.
- Artisan (artisan.co). Ava, an AI BDR; pricing is scoped on a sales call (Team plan around 2,500 leads contacted per month).
- 11x (11x.ai). Alice, an outbound digital worker; no public pricing, sold through a live demo.
- Salesforge (Agent Frank) (salesforge.ai). Agent Frank runs on Salesforge; billed annually, with email infrastructure bought separately.
- Reply.io (reply.io). A sales engagement platform with an AI SDR plan starting at $500/month.
- Amplemarket (amplemarket.com). Sales platform with Duo AI copilots; Startup plan is $600/month on an annual term.
Price, contract and sending
| Tool | Price | Contract | Sending inboxes |
|---|---|---|---|
| Krabat | $0.05 per email sent | No subscription; daily budget cap; pause anytime | Pool of pre-warmed, SPF/DKIM/DMARC-authenticated inboxes |
| Explee | $0.04 per email sent | Pay as you go, no subscription | Not published |
| AiSDR | From $250/month (Solo, 200 AI-researched contacts/month); $900/month (Explore, 800 contacts/month) | Solo month-to-month; Explore and Scale plans have quarterly contracts | Turnkey email setup and warmup (Solo: 1 domain, 3 mailboxes) |
| Artisan | Not published | Plans scoped with sales (Team, Scale, Enterprise) | Sending infrastructure included in plan |
| 11x | Not published | Not published | Not published |
| Salesforge (Agent Frank) | Agent Frank $417/month billed annually for up to 1,000 active contacts; $499/month billed annually for 2,000+ | Billed annually | Email infrastructure extra (own mailboxes or Infraforge) |
| Reply.io | AI SDR plan from $500/month | Not published | Not published |
| Amplemarket | Startup plan $600/month on an annual term, 2 users | Annual term | Not published |
Comparisons
AI SDR prices: How much does an AI SDR cost? · Best AI SDR tools in 2026
Krabat is our product. "Not published" means the vendor's site does not state it.