Marketing automation, explained by the work agencies actually deliver

Every automation is a simple rule: when something happens, if the contact matches a condition, then do something. The value comes from running thousands of these rules reliably.

Tip: draw every flow on one page before building it – trigger, delays, exits. If the drawing needs two pages, split the flow.

A marketing automation agency designs, builds and runs the automated journeys between your website, CRM, email or SMS tool and sales team. It sits between a software vendor (which sells the tool) and a creative agency (which writes the messages) – its job is to make data, logic and content work together.

On Sortlist, you can also compare email marketing automation and marketing automation consulting specialists.

Skip at the start: complex lead-scoring models, birthday emails, multi-branch journeys with ten conditions. Build them once the first three flows run cleanly and you know your numbers.

Agencies usually specialise in a few tools. Decide the family of platform first, then pick an agency certified on it:

Tip: ask for a sandbox demo on your own data (a sample export), not on the agency’s demo account. You will see in an hour how well they handle your mess.

They appear on Sortlist’s marketing automation listing with at least 10 reviews, but have no published automation project and fewer than 3 reviews describing automation work. Their ratings may reflect other services – check their automation case studies before shortlisting them.

1. The sample

Sortlist lists 1,294 marketing automation providers on this page. We evaluated the 220 agencies on the first three pages of the listing, in its relevance order. 119 of them have at least 10 verified client reviews – our threshold for a rating to be meaningful. 5 of those also pay for a sponsored placement and were set aside, leaving 114. Of these, 23 agencies with at least one published marketing automation project on Sortlist or at least 3 client reviews describing automation work were ranked, with 485 verified reviews between them and an average rating of 4.91; the 91 others are listed separately.

2. The score

3. Independence

• Sortlist is a marketplace, not an agency: it does not appear in its own ranking.
• Agencies cannot pay to enter the ranking or to move up. Agencies with a sponsored placement on this listing are excluded from scoring and shown separately.
• The order of the listing page, subscriptions and badges play no part in the score – only the three criteria above.

4. Limits

Reviews reflect each agency’s work across all its services, and agencies with few reviews may be excellent but are not yet scored. That is why every entry says what it is best for – and when another agency would suit you better. The ranking is updated regularly.

1. 1

   Bring a data sample to the first call

   Export 200 anonymised contacts from your CRM. Ask each agency what it would fix before building anything – the answer shows whether they think about data or only about emails.

2. 2

   Check the platform match

   Ask for certified people and two live clients on your platform. A HubSpot expert is not automatically a Klaviyo or Salesforce expert.

3. 3

   Ask for one flow, end to end

   Request a real example: the trigger, the logic, the messages and the revenue or pipeline it produced.

4. 4

   Agree on the sales handover

   For B2B, the agency should ask how sales follows up. Automation that sends leads nobody calls is wasted.

5. 5

   Make ownership explicit

   The platform account, templates, data and documentation stay yours.

6. 6

   Start with a 90-day pilot

   Three flows, one report per flow, a decision point at day 90.

Red flags

• A proposal for 20 flows before anyone has looked at your data
• Success measured in opens and clicks only
• No plan for consent, unsubscribe and data-protection rules
• The agency insists on its own platform account
• No documentation of flows at handover

Among the 23 agencies in the selection, 15 start at €1,000, 3 accept smaller projects and 5 start at €3,000 or more.

Remember the platform itself: most tools price by number of contacts or emails sent. Clean out inactive contacts before migrating – you pay for every one you keep.