Best for agencies

The best AI SDR for agencies running outbound for clients

An agency's problem is not one campaign, it is many clients at once, kept separate, on your brand, at a margin. The right AI SDR isolates every client and scales delivery without another hire.

For an agency, the best AI SDR has separate per-client workspaces, co-branded reporting, volume pricing, and isolated sending so one client's reputation never touches another's. Chronic offers this with deliverability managed per client; Smartlead is the closest infrastructure-only option you run yourself.

What an agency actually needs

Running outbound for ten clients is not running one campaign ten times. Each client needs its own domains, mailboxes, data, and reporting, fully walled off, so a deliverability problem on one account never spreads to another.

And the model only works if it scales your margin: delivery that does not require a new hire per client, plus pricing that rewards volume. Judge the options on isolation, branding, and how delivery scales.

The options for an agency

Chronic: white-label, delivery handled

Separate workspaces per client with isolated data, domains, and sending; co-branded portal and reporting; volume pricing; and an operator that does the delivery work, so you add clients without adding headcount. Deliverability is owned per client.

Smartlead: the agency infrastructure favorite

Strong multi-client cold email infrastructure with whitelabel options and unlimited mailboxes. The closest alternative if you want to run sending in-house and have the team to operate it.

Instantly: multi-workspace sending

Cold email sending with workspaces and a lead finder. Capable and inexpensive, but the campaign operation and monitoring stay with your team.

11x / Artisan: not built for multi-client

Per-seat autonomous AI SDRs aimed at a single company's outbound. Powerful, but the seat-based, single-tenant model fits an in-house team better than an agency running many accounts.

How an agency should choose

  • Demand true per-client isolation: separate domains, mailboxes, and data, so one client's spam complaint never touches another's inbox placement.
  • Get your brand on it. Co-branded portals and reporting are what let you sell the outcome as your service, not a reseller of someone else's tool.
  • Protect margin. Volume pricing plus delivery that does not need a new hire per account is the difference between scaling and just getting busier.
  • Make deliverability someone else's job per client, so your team is not running warmup and DNS across dozens of domains.

Frequently asked

What is the best AI SDR for an agency?
One with per-client workspaces, co-branded reporting, isolated sending, and volume pricing. Chronic provides this with deliverability managed per client; Smartlead is the closest if you want infrastructure you run yourself.
Can I white-label an AI SDR for my clients?
Yes. Chronic offers a co-branded portal and reporting so clients see your brand. Smartlead also offers whitelabel on its infrastructure, though you operate the campaigns.
Does it keep each client's sending separated?
It should, and this is the most important question for an agency. Chronic isolates data, domains, and mailboxes per workspace so a deliverability issue on one client cannot affect another.
How does pricing work for multiple clients?
Agency-oriented tools use volume or per-workspace pricing. Chronic offers volume pricing built for running many clients, so margin improves as you add accounts rather than paying full retail per seat.

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Scale client delivery without scaling headcount.