Best email marketing platform for agencies in 2026
GetResponse is the strongest pick for agencies running email on behalf of clients — its pricing model and bundled landing pages make managing several client accounts cost-effective, and its automation depth handles genuinely complex client workflows without extra add-ons.
Running email marketing for clients is a different job from running it for your own business — you're juggling multiple brands, multiple lists, and multiple sets of login access, often with clients who want to peek in and check on things themselves. Here's what to actually look for, and what it costs in practice.
The agency problem most platforms weren't built for
Most email platforms are priced and designed for one business running one list. Agencies need to run several client lists, often with different branding, different automation logic, and different reporting needs — and the pricing needs to work sensibly across all of them at once, not multiply per client the way a lot of tools default to.
Why GetResponse fits the agency shape
GetResponse's per-account pricing stays reasonable even as you add client accounts, and bundling landing pages means you're not paying for a separate tool every time a client needs a simple campaign page built quickly for a promotion or launch.
What to check before committing a client to a platform
Does the platform support the client's existing list size without a painful price jump the moment they grow, does its automation handle the complexity the client actually needs (not more, not less than that), and can you hand over access cleanly and completely if the client relationship ends — sorting this last part out matters more than it seems until you're mid-handover with a departing client.
A worked example: managing 5 client accounts
An agency running email for 5 clients, each with lists between 1,000-4,000 contacts, on GetResponse's per-account structure typically pays £25-45/month per client account — a manageable, predictable cost the agency can bill straight through to each client, often with a management fee added on top for the service itself.
The funnel-first alternative for offer-led clients
If a client's model is offers and funnels rather than ongoing newsletters, ClickFunnels is worth running alongside or instead — see our full ClickFunnels review for when that swap actually makes sense rather than adding unnecessary complexity to a simple client need.
A simple client-onboarding checklist
For each new client: create their account or sub-account, import their existing list (if any) via CSV, build their first welcome sequence using a template rather than from scratch, and agree upfront who owns the login if the relationship ends — sort that last part before day one, not after a difficult conversation when a client is already leaving.
Handling client access without losing control
Most agencies set the client up as the named account owner and add the agency as a team member with editing access — this means access transfers cleanly and immediately if the relationship ends, without an awkward request to "please give us the login" after the fact.
Frequently asked questions
What email platform is best for agencies with multiple clients?
GetResponse, for most agencies — its pricing scales reasonably across multiple accounts and it bundles landing pages, reducing the total tool count per client.
Should an agency use one email platform for all clients?
Usually yes, for consistency and efficiency — but funnel-heavy clients may be better served by a specialist tool like ClickFunnels instead.
How do agencies price email marketing services on top of platform costs?
Most add a management fee on top of the platform subscription, either billed to the client directly for their own account, or absorbed into a broader monthly retainer.
Who should own the client's email platform login — the agency or the client?
Agree this explicitly before starting work. Many agencies set the client up as the account owner and add themselves as a team member, so access transfers cleanly if the relationship ends.
What does it typically cost to run email for 5 client accounts?
Roughly £25-45/month per client account on GetResponse for typical list sizes, which agencies commonly pass through to clients plus a management fee.
Is it better to use separate accounts per client or one shared account?
Separate accounts per client, even if it costs slightly more — it keeps data cleanly separated, simplifies handover if a relationship ends, and avoids one client seeing another's data.
The bottom line: GetResponse for the core of your client roster, ClickFunnels for funnel-heavy exceptions.
The rest of this email marketing series
Part of a full series on email marketing platforms for small businesses and agencies: GetResponse vs Mailchimp, GetResponse review, best email marketing for small business, best email platform for agencies, Kit vs GetResponse, ClickFunnels review, and email marketing for consultants.