Most marketing does not happen in a single moment. People sign up, get busy, forget, come back, compare options and then — maybe — buy. A drip campaign is built for exactly that messy, drawn-out reality: instead of one big message, you send a planned trickle of smaller ones at the right moments. Here is how drip campaigns work and how to run them well in the UK.
What it is
A drip campaign is an automated series of marketing messages sent to a person over time, either on a fixed schedule or in response to something they do. The name comes from drip irrigation: a steady, controlled flow rather than a single flood. Each message is written in advance, and software releases them step by step as a contact moves through the sequence.
The defining feature is that the timing is relative to the individual, not the calendar. Someone who joins your list today gets email one today and email two three days later; someone who joins next month follows the same path on their own clock. That is what separates a drip from a one-off broadcast such as a newsletter.
How a drip campaign works
Every drip has three moving parts:
- A trigger — the event that starts the sequence. Common triggers include signing up to a list, downloading a guide, creating an account, abandoning a basket, or simply going quiet for 60 days.
- A schedule or logic — the spacing between messages and any branching. A simple drip sends email one immediately, email two after two days, email three after a week. A smarter one branches: if the reader clicks, they get the "interested" path; if not, they get a gentle nudge.
- The content — the pre-written messages themselves, each with a single clear purpose and one obvious next step.
Because the whole thing runs automatically, the work is mostly upfront. You design the flow once, connect it to your sign-up form or shop, and it then runs for every new contact without manual sending. This is a core part of broader email marketing and marketing automation.
Common types of drip campaign
Drips map neatly onto stages of the customer relationship:
- Welcome series. The first few messages after someone subscribes — introducing your brand, setting expectations, and pointing to your best content.
- Onboarding. For new customers or app users, a sequence that helps them get value quickly (set up, first action, useful tips), which reduces early drop-off.
- Lead nurturing. A slower educational drip that keeps a prospect warm while they decide, often paired with lead scoring so sales can step in when interest peaks.
- Abandoned basket. Triggered when a shopper adds items but does not check out — a reminder, sometimes with a help offer or incentive.
- Re-engagement (win-back). Aimed at contacts who have gone quiet, asking whether they still want to hear from you.
- Post-purchase. Thank-yous, how-to-use guidance, review requests and related recommendations after a sale.
Each type sits at a different point of the marketing funnel, which is why a business often runs several drips at once for different audiences.
Drip vs broadcast
It helps to be clear about when a drip is the right tool:
| Drip campaign | Broadcast / newsletter | |
|---|---|---|
| Timing | Relative to each contact | Same moment for everyone |
| Setup | Designed once, runs automatically | Created and sent each time |
| Best for | Onboarding, nurturing, lifecycle | News, offers, one-off updates |
| Personalisation | High (based on behaviour) | Lower (segmented at best) |
Neither is "better" — most teams use both. Broadcasts handle timely news; drips handle the repeatable journeys every contact takes.
Staying compliant in the UK
Automation makes it easy to send a lot of messages, which is exactly why the rules matter. In the UK, marketing emails and texts to individuals are governed by the Privacy and Electronic Communications Regulations (PECR) alongside UK GDPR. In practice that means:
- Consent. You generally need clear, opt-in consent to email or text individuals. There is a narrow soft opt-in allowing you to market similar products to people who bought from you and were given a chance to opt out — but it is limited, so do not over-rely on it.
- Easy unsubscribe. Every message must include a simple, working way to opt out, and you must action requests promptly.
- Honesty. Identify yourself, do not disguise that a message is marketing, and keep your data accurate and secure.
Connecting your drip to a well-kept contact list — often in a CRM — makes it far easier to respect opt-outs and avoid messaging people who have left. The ICO's direct marketing guidance is the authoritative reference and worth reading before you launch.
This is general information, not legal advice; check the ICO's current guidance or take professional advice for your specific situation.
How to measure success
Judge a drip on outcomes, not activity. The headline metrics are:
- Open rate — a rough signal of subject lines and timing (less reliable than it once was, but still useful as a trend).
- Click-through rate — whether the content earned action.
- Conversion rate — the share who did the thing the drip was built for (bought, booked, activated). This is the one that matters most.
- Unsubscribe and spam-complaint rates — your early-warning system. A rising opt-out rate usually means too many messages, poor targeting, or weak relevance.
Review the sequence step by step. If email four is where people drop off or unsubscribe, rewrite or remove it. Good drips get shorter and sharper over time, not longer.
The bottom line
A drip campaign turns a single sign-up into an ongoing, automated conversation — welcoming, teaching or winning back, one well-timed message at a time. The craft is in mapping each sequence to a clear goal, spacing messages so they feel helpful rather than pushy, and respecting UK consent and unsubscribe rules. Build it once, measure honestly, and prune what does not work, and a drip quietly does relationship-building that no one has time to do by hand.