Klaviyo vs Mailchimp

70% of Newsletter Subscribers Purchase After Clicking Offer

A new study by Omnicom and United Internet Media reveals that 70% of current or former newsletter subscribers in the DACH region have made a purchase or booking within six months of clicking an offer in a newsletter. The survey, conducted by Bilendi in October and November 2025, included 6,014 internet users aged 18-69 across Germany, Austria, and German-speaking Switzerland. The study also found that 71% of subscribers subscribe to newsletters from online shops, and 55% cite discounts as a reason for subscribing. Additionally, 78% want to control the topics they receive, and 59% are interested in dynamic newsletters. The findings highlight the significant role of email marketing in the purchase journey, though the study does not measure conversion rates.

• 70% of newsletter subscribers in the DACH region purchased or booked within six months after clicking a newsletter offer.
• Study surveyed 6,014 internet users aged 18-69 in Germany, Austria, and Switzerland.
• 71% of subscribers receive newsletters from online shops, 49% from internet services, 40% from events, and 39% from editorial newsletters.

Klaviyo goes Headless, Opening its Platform to Agents and Marketers Wherever They Work

Klaviyo announced a major platform expansion with a headless architecture, new EMEA headquarters in Dublin, Asia HQ in Singapore, and strategic acquisition of an AI agency team.

Klaviyo Unveils Personalization, Smarter AI Agents, and Klaviyo Headless at K:BOS 2026

Klaviyo unveiled the Personalization, smarter AI agents, and Klaviyo Headless. See the autonomous B2C CRM in action at K:BOS 2026.

Intuit Faces Securities Fraud Lawsuit

Rosen Law Firm reminds Intuit Inc. investors of the September 8, 2026 deadline to become lead plaintiff in a securities class action lawsuit. The lawsuit alleges that Intuit made misleading statements about its growth prospects and the performance of Mailchimp, its email marketing platform. Specifically, the complaint claims that Intuit concealed competitive pressures from generative AI and that Mailchimp was not achieving the turnaround to double-digit growth as touted. The class period spans February 25, 2025 to June 1, 2026. Investors who purchased Intuit securities during this period may be eligible for compensation. The deadline to move the court to serve as lead plaintiff is September 8, 2026. The lawsuit is ongoing and no class has been certified yet.

• Rosen Law Firm filed a securities fraud class action against Intuit Inc.
• The class period is between February 25, 2025, and June 1, 2026.
• The deadline to apply for lead plaintiff is September 8, 2026.

Fixing 550 SPF Check Failed Error

This technical guide explains the 550 SPF Check Failed error — a rejection by a receiving mail server when a sender's domain fails SPF (Sender Policy Framework) validation as defined by RFC 7208. It lists common causes (missing or malformed SPF TXT records, incomplete sender lists, exceeding the 10-DNS-lookup limit, or strict DMARC policies) and provides a five-step troubleshooting workflow: verify SPF existence and syntax, include all sending sources, check DNS lookup limits, review DMARC policy, and test/monitor after changes. The article includes example SPF records, best practices (start with ~all, combine SPF with DKIM and DMARC, maintain DNS hygiene), and recommends using SPF/DMARC reporting and external checkers to validate changes and monitor deliverability.

• The 550 SPF Check Failed error occurs when a receiving mail server rejects an incoming email because the sender's domain failed SPF validation.
• SPF is defined in RFC 7208 and requires a domain TXT record that starts with 'v=spf1' to list authorized sending mechanisms.
• Common causes of SPF failures include missing SPF records, incorrect SPF syntax, incomplete sending sources, and exceeding the SPF 10 DNS lookup limit.

Tone-of-voice guides unfit for the AI era

Dan Ramirez argues that traditional tone-of-voice guides — static documentation built for human-paced marketing — are inadequate as AI accelerates content production across channels. He proposes 'Brand Language Architecture': a governable, structured system that encodes brand meaning, rules and accountability so AI and tools can reliably produce on-brand language. Ramirez warns that tooling vendors (he cites Adobe's Brand Intelligence and Brivvy) are racing to enforce brand voice but often assume a formally defined source of brand language; without that, brands risk drift or vendor lock-in. He offers five diagnostic tests (departure, five-people, catch-after, prompt, accountability) to assess readiness and urges organisations to build owned language systems before tools do it for them. Ramirez is founder of Rule of Three, a practice that builds governed language systems for large organisations.

• Dan Ramirez says existing tone-of-voice guides are documentation built for human-speed marketing and are inadequate for AI-scale content production.
• He proposes 'Brand Language Architecture' to turn brand language into governable infrastructure with defined knowledge, meaning and rules.
• Adobe launched Brand Intelligence in April, positioned as a move beyond static brand guidelines.