Success.ai vs Lemlist
Choose Success.ai if your priority is finding B2B leads and running email-led outreach; choose Lemlist if you need email, LinkedIn, calling and other channels in one workflow. Both vendors publish lead databases, AI-assisted messaging and email warm-up, so the more useful distinction is the channels you plan to use and the limits of the plan you choose.
Last updated October 24, 2026.
At a glance
| Dimension | Success.ai | Lemlist |
|---|---|---|
| Outreach channels | Email and LinkedIn sequence steps | Email, LinkedIn and calls; SMS and WhatsApp options |
| Published starting price | Not published | Email: $69/month for 50,000 emails |
| Plans | Not published | Email, Multichannel and Enterprise |
| Email sending allowance | Plan amount not published | Email: from 50,000/month; Multichannel: unlimited |
| Users and senders | Plan limits not published | Email: unlimited users and senders |
| Lead database | 700M+ B2B contacts | 650M+ leads |
| Lead-data usage | Plan-based lead balance and export limits | Credits for contact data and enrichment |
| Email warm-up | Configurable mailbox warm-up | Included on all plans |
| AI messaging | AI Writer for email subjects and bodies | AI agents for research and messaging |
| Integrations | In-app integrations and webhooks | CRM integrations, Zapier and API |
| Email providers | Google, Microsoft and IMAP/SMTP | Google, Microsoft and SMTP |
| Support | Help Center and contact support | In-app live support; Enterprise priority support |
Scroll the table sideways to compare each row.
Which should you choose?
Choose Success.ai if
- Teams focused on B2B lead finding and email-led outreach
- Senders using Google, Microsoft or IMAP/SMTP mailboxes
- Teams that want AI help drafting email sequences
Choose Lemlist if
- Teams combining email, LinkedIn and calling
- Email-only teams that want unlimited users and senders on a volume-based plan
- Organizations that need published Enterprise options for SSO and priority support
The verdict
Success.ai is a fit for teams centered on lead finding, AI-written email sequences and mailbox management. Lemlist is a fit for teams that need calling alongside email and LinkedIn, or want a published email plan priced by monthly sending volume rather than seats. Check Success.ai’s current plan price and allowances before deciding: its accessible vendor documentation describes plan-dependent limits but does not state the amounts.
Success.ai vs Lemlist: common questions
- Which should I choose for multichannel outreach?
- Lemlist publishes email, LinkedIn and calling in its Multichannel plan, with SMS automation and a WhatsApp add-on. Success.ai documents email and LinkedIn campaign steps. Choose based on the channels your team will actually use.
- How much do Success.ai and Lemlist cost?
- Lemlist lists its Email plan at $69 per month for 50,000 emails and its Multichannel plan at $109 per user per month, with lower monthly-equivalent prices on annual billing. A current Success.ai price could not be confirmed from its accessible vendor documentation.
- Do both products include a lead database?
- Yes. Success.ai advertises 700M+ B2B contacts, and Lemlist advertises 650M+ leads. Database size does not mean every contact is available to export: Success.ai documents plan-based lead balances and export limits, while Lemlist uses credits for contact data.
- Can I connect unlimited email accounts?
- Lemlist publishes unlimited email senders on its Email plan and five senders per user on Multichannel. Success.ai supports connecting multiple accounts, but an exact current plan allowance was not available in its accessible vendor documentation.
- Is email warm-up available in both products?
- Yes. Success.ai documents configurable warm-up for connected mailboxes. Lemlist says its warm-up and deliverability protections are included in all plans. Neither vendor’s warm-up feature guarantees inbox placement.
- Which has clearer published sending limits?
- Lemlist publishes a 50,000-email monthly starting tier for its Email plan and unlimited emails and messages on Multichannel. Success.ai documents account-level and campaign-level sending limits, but a current plan-wide email allowance was not available in its accessible vendor documentation.
- Can either product connect to my existing tools?
- Success.ai documents in-app integrations and webhooks. Lemlist lists CRM integrations, Zapier and an API. Confirm a specific CRM or workflow before purchasing either product.
- Is there a free trial?
- Lemlist publishes a 14-day free trial that includes Multichannel features except in-app calls. A current Success.ai trial term could not be confirmed from its accessible vendor documentation.