What are the best AI SDR tools?

What does an AI SDR tool do

An AI SDR tool takes on some of a sales development rep's work: finding prospects, researching them, writing the first message, following up and handling replies. Tools differ in how many of those steps they cover and in whether the last step, sending, happens without a person.

At one end sit autonomous agents that prospect and send on your behalf. At the other sit assistants that research and draft while a person decides what goes out. Most teams know which end they want once they picture a wrong message reaching their best account.

How much does each AI SDR platform send without a human

AI SDR platforms range from agents that send outbound themselves to tools that leave every send to you. The notes below come from each product's own public pages; check their sites for how approval is set up today.

• 11x: Alice runs outbound across email and social, and Julian handles inbound voice and chat; channels named include SMS, WhatsApp and a human dialler.
• Artisan: its agent Ava finds and enriches B2B leads, then writes and sends personalised outreach.
• Amplemarket: multichannel sequences, an outbound dialler and deliverability tools, with an AI assistant called Duo and AI intent signals.
• Unify: signal-based outbound with multichannel sequencing and agentic chat, and HubSpot and Salesforce sync that is read-only on Pro and read-write on Business.
• Regie.ai: research, drafting and agents with a parallel dialler, connected to HubSpot or Salesforce, one CRM per workspace.
• Lindy: an AI agent that drafts, schedules and replies to email in your inbox and takes on lead generation and outreach tasks.

How should approval work in AI sales development tools

Approval in AI sales development tools should sit where a mistake is costly: before the first message to a new account, before a change to a shared CRM record and before anything that speaks for your brand in public. Drafting and research rarely need a gate; sending usually does, at least while you learn how the tool writes.

Take an illustrative team selling compliance software to banks. It lets AI research accounts and draft openers freely, but a rep reads every first email before it goes, because one wrong claim to a regulated buyer costs more than the time saved. After a month of reviewing, the team relaxes approval only for follow-ups in threads a rep already started.

• Can approval be set per action, such as sending, posting or editing records?
• Who in the team can change those settings?
• Is there a record of what the AI sent and who approved it?

Is the best AI BDR different from the best AI SDR

The best AI BDR and the best AI SDR are usually the same tool, because the products do not split along those job titles. Many companies use the titles interchangeably; where they differ, BDRs tend to focus on outbound to new accounts and SDRs also work inbound leads.

So the useful split is outbound against inbound. For outbound, look at prospect finding, research and writing. For inbound, look at reply handling and routing, such as the inbound voice and chat agent 11x lists.

Where does Pebbles Ai fit among AI SDR software

Pebbles Ai sits at the assistant end of AI SDR software: its assistants find leads, research accounts and draft outreach, and the execution mode you choose decides whether a send waits for you. Leads come from Pebbles Ai's own growing B2B contact database, GDPR compliant, at 1 to 10 named companies per run, with work emails where found and a confidence score.

Sending follows the execution mode. In Manual, the mode the web app starts in, an email send waits for your approval; in Plan it is queued; in Auto it runs without asking. Template send to a CRM segment always asks, in every mode. There are no automated multi-step sequences, no dialler and no phone numbers.