What Happened
HubSpot published an article on 15 September 2026 arguing that most email marketing teams already have the fundamentals covered, and that the fundamentals are no longer where the problem sits. The piece opens by listing what teams reliably do well: authenticate the sending domain, clean the list, write a subject line and test before sending.
The argument is that those tasks have become table stakes rather than differentiators, and that the harder challenges appear once a programme moves upmarket in complexity, volume and audience segmentation. HubSpot frames the answer as more advanced platform features rather than better execution of the basics.
That framing sits on top of a well established sequence in email marketing. Domain authentication moved from optional to mandatory when Google and Yahoo tightened bulk sender requirements in 2024, forcing SPF, DKIM and DMARC records on anyone sending at volume. Once an entire market complies with the same baseline, the baseline stops producing an advantage. Email marketing has followed the same arc as mobile-friendly web design and HTTPS: first an edge, then a requirement, then invisible.
For UK senders there is a second layer the source does not address. Compliance here runs through PECR and UK GDPR, not CAN-SPAM, which means consent for most B2C marketing email must be affirmative rather than assumed, and soft opt-in for existing customers carries conditions on how the address was collected. A UK list that passes technical hygiene checks can still be built on a weak legal footing.
Where UK email programmes actually break down
Start by auditing what you can already measure before you buy anything more sophisticated. Pull 12 months of send data and split performance by segment, lifecycle stage and device. If open and click rates are flat across every segment, your problem is targeting, not tooling. Buying a more advanced platform to send the same message to the same undifferentiated list changes your cost base and nothing else.
The second failure point is ownership. Email often sits with whoever has time rather than with a named owner, which is why send calendars drift and automated flows go unreviewed for months. Check your welcome sequence, abandoned basket flow and re-engagement series right now: in many UK SMEs at least one of them is still referencing a product, price or offer that no longer exists. That check costs an afternoon and is usually the highest-return hour in the quarter.
Then set expectations honestly. Segmentation and lifecycle automation take one to two quarters to show reliable movement, because you need enough sends per segment to read the results with any confidence. Where email gets treated as one channel inside a wider programme rather than a standalone tactic, it tends to compound faster, which is how we approach it across our digital marketing work.
The takeaway for smaller senders
If your list is under roughly 10,000 addresses, enterprise features are rarely the constraint. Consistent sending, a clear segment structure and honest list pruning will outperform a platform upgrade almost every time.
How we assess an email programme before recommending a platform change
We start with the data you already have rather than the feature list a vendor sent you. That means reviewing deliverability records, segment-level engagement, the health of existing automated flows and whether consent records stand up under PECR. Only after that do we look at whether your current platform is genuinely the limiting factor.
Most of the email programmes we review in London do not need more features. They need a defined owner, a realistic send cadence and one or two automated flows that actually work. We would rather tell you that than sell you a migration, and we are upfront that meaningful movement in email metrics usually takes 3 to 6 months of consistent sending.
Questions about scaling your email programme
Do I need an enterprise email platform if I am sending to 5,000 contacts?
Almost certainly not. At that size the returns come from segmentation and consistency, and most mid-tier platforms already support both.
How long before segmentation shows results?
Expect one to two quarters. You need enough sends per segment before the differences in open and click rates mean anything statistically.
Does UK law treat marketing email differently from the US?
Yes. PECR and UK GDPR generally require affirmative consent for B2C marketing email, with narrower soft opt-in rules for existing customers, so a US-built compliance process does not transfer directly.
Reviewing your email setup with us
If you are weighing a platform upgrade against fixing what you already run, a conversation is usually cheaper than a migration. Get in touch and we will look at your current send data, deliverability position and automated flows, then tell you honestly which of the three is holding you back.
Written by the London Marketing Company team.
Source: https://blog.hubspot.com/marketing/advanced-email-marketing-challenges
