Your email lands in Promotions because of reputation, not design
The Promotions tab became the scapegoat of email marketing. The uncomfortable truth is that filtering depends on signals almost nobody measures.
The plain-text myth
Every six months the same advice comes back: strip the images, strip the buttons, send plain text and you will land in Primary instead of Promotions. It is false, and we have been testing it for years with retail and services clients across the region. A plain-text email sent from a domain with mediocre reputation to a cold list still lands in Promotions, or straight in spam.
Gmail does not classify on aesthetics. It classifies on aggregate behaviour: who opens, who replies, who archives unread, who marks as spam and how often. Design influences whether you get read, not where you land.
The signals that actually move the needle
- Complete authentication. SPF, DKIM and DMARC aligned. Without DMARC at a quarantine policy or stricter, you start at a structural disadvantage. This is infrastructure, not marketing.
- Complaint rate. Above 0.3% spam reports, deliverability degrades quickly and takes weeks to recover.
- Recent engagement. Providers weight the last 30 days far more than lifetime history. A list of 80,000 with 6,000 active performs worse than a fully active list of 8,000.
- Volume consistency. Going from zero to one monthly blast is the classic signature of a low-quality sender.
Why the problem is worse in LATAM
Two local factors. First, heavy reliance on purchased lists or addresses inherited from events and trade fairs, which carry spam traps and dead accounts. Second, the habit of sending everything to the whole base because marginal cost looks like zero. It is not. Every send to an inactive contact is a negative vote accumulating against your reputation.
The clean-up plan
Start by segmenting on 90-day activity and stop mailing everyone else. Run a single reactivation campaign to the inactive group, with one question and a highly visible unsubscribe link. Suppress anyone who does not respond. It hurts the list-size report and improves everything else.
Then stabilise weekly volume, audit authentication and monitor complaints by segment rather than in aggregate. If one specific campaign spikes reports, the problem is the promise in the subject line, not the sender.
And accept the obvious: landing in Promotions is not a sentence. In many consumer categories the tab works as a shop window, and users open it with purchase intent. Chasing the Primary inbox with commercial content is optimising the wrong metric.