---
title: "Email Marketing"
description: "11 posts about Email Marketing, summarised, each linking to the original."
---

# Email Marketing
> 11 posts about Email Marketing, summarised, each linking to the original.

## Articles

### [How ProfitBooks used Intercom to increase renewal rates by 40% - The Intercom Blog](https://yomu.fyi/post/how-profitbooks-used-intercom-to-increase-renewal-rates-by-40-the-inte.md)
- Company: [Intercom](https://yomu.fyi/company/intercom.md)
- Published: Oct 13, 2026
- Type: Problem & solution

ProfitBooks, an Indian cloud accounting startup, faced a fragmented toolchain as it rapidly grew to over 1,000 customers. They previously used separate solutions for customer support (Zendesk), email marketing (Mailchimp), feature tracking (Asana), and a self-built CRM, resulting in low customer engagement. After adopting Intercom as a unified platform for support, email marketing, and sales, their customer message volume increased 15 times, revealing previously hidden user feedback. Intercom’s automated messaging and user segmentation enabled targeted emails, boosting open rates from 7% to 45% and driving measurable business impact. By sending a payment reminder one day before account expiration, ProfitBooks achieved a 40% increase in renewal rates, and a follow-up promo converted 18% of churned trial users.


### [How to send good email – opens, clicks, conversions - The Intercom Blog](https://yomu.fyi/post/how-to-send-good-email-opens-clicks-conversions-the-intercom-blog.md)
- Company: [Intercom](https://yomu.fyi/company/intercom.md)
- Published: Oct 13, 2026
- Type: Explainer

Email open rate, which relies on a tracking pixel being loaded, is an unreliable metric because modern clients let users read without opening. Reader fatigue is inevitable as a list grows, and the only cure is staying relevant. Subject lines and sender fields have the strongest effect on opens; simple, personal lines like “Dinner?” performed well for a political campaign. Click-through rates are more accurate, and the first two links get most of the clicks, so the call to action must be prominent. Links should be visually obvious and placed predictably, as weak styling halves their click-through rate. The core advice is to write about what the reader wants to know, not about the product, and to test the email on a stranger before sending.


### [Learn How To Nurture New Signups Beyond The Free Trial](https://yomu.fyi/post/learn-how-to-nurture-new-signups-beyond-the-free-trial.md)
- Company: [Intercom](https://yomu.fyi/company/intercom.md)
- Published: Oct 9, 2026
- Type: Announcement

The SaaS law of averages suggests 40-60% of free trial signups use the product once and never return, often due to lack of perceived value or mismatched expectations. The Nurture Starter Kit is a guide for designing messaging campaigns to convert these signups into paying customers through improved communication. It advocates behavior-based triggered messages over timed drips, tailored to each customer’s definition of success, and includes half a dozen example messages. The kit also provides advice on measuring campaign effectiveness through actions that lead to conversions, not just macro-level rates. The goal is to make becoming a paying customer the obvious choice, avoiding radio silence followed by a last-minute expiration email.


### [Peak Season Deliverability: Why Quality Beats Quantity This Holiday Season](https://yomu.fyi/post/peak-season-deliverability-why-quality-beats-quantity-this-holiday-sea.md)
- Company: [Twilio](https://yomu.fyi/company/twilio.md)
- Author: Adam Morales
- Published: Oct 7, 2026
- Type: Problem & solution

During Black Friday and Cyber Monday, email volume spikes, tempting senders to blast all contacts. However, sending to unengaged recipients leads to throttling, blocklists, and spam placement, which can delay time-sensitive holiday offers. Inbox providers use dynamic throughput based on real-time sender reputation; high engagement unlocks maximum sending velocity, while low engagement causes rate-limiting with 4xx deferrals, potentially delivering a 9 AM campaign at 2 AM. Senders with excellent engagement experience up to 100 times faster delivery than those ignoring best practices. Implementing strict sunset policies for contacts inactive 90-180 days, permission-based opt-ins, and automated verification via the SendGrid Email Validation API protects sender reputation and preserves control over campaign timing, avoiding blocklist events that take 24-72 hours to mitigate.


### [Warmup Services Harm Your Deliverability](https://yomu.fyi/post/warmup-services-harm-your-deliverability.md)
- Company: [Resend](https://yomu.fyi/company/resend.md)
- Author: Phil Nash
- Published: Sep 30, 2026
- Type: Explainer

Warmup services that simulate email engagement harm deliverability because inbox providers detect the pattern and tighten filtering, causing reputation decline that makes recovery harder. Validity’s new Heatwave blocklist identifies domains warmed through synthetic engagement, using signals from its Intelligence Network to automatically list domains crossing a threshold, and over 1.2 million domains have already been listed. The signal is shared with providers including Comcast, Proofpoint, Spamhaus, and SURBL, potentially damaging domain reputation with these providers. A domain on Heatwave receives a permanent record, and even if the domain stops cold outreach, the warming listing stays, making recovery difficult or impossible. Legitimate senders should verify their domain at lookup.validity.tools, obtain proper consent, and increase volume gradually through real engagement, as the domain warms itself through real engagement and there is no shortcut to trust; warmup activity may also run through agencies without the sender’s knowledge.


### [Welcoming Roberto Braga, our new Growth Marketer](https://yomu.fyi/post/welcoming-roberto-braga-our-new-growth-marketer.md)
- Company: [Resend](https://yomu.fyi/company/resend.md)
- Published: Sep 16, 2026
- Type: Announcement

Resend welcomes Roberto Braga as its new Growth Marketer, adding a leader with more than 10 years of experience building and scaling technology businesses. He previously co-founded and served as CMO of YC-backed BX Blue, led growth through its acquisition by PicPay, ran organic growth at PicPay with SEO and ASO, and most recently was Reddit’s Country Growth Lead in Brazil. At Reddit, he helped double the platform’s DAU through content and partnership-led growth strategies; at Resend, he plans to create the Growth discipline and systematize the factors driving user acquisition and retention. Braga describes experimentation, channel mixing, email, and user conversations as central to his work, and advises growth marketers to focus on user pains rather than the newest tools or frameworks.


### [Italy's email open tracking pixels rules are changing](https://yomu.fyi/post/italy-s-email-open-tracking-pixels-rules-are-changing.md)
- Company: [Twilio](https://yomu.fyi/company/twilio.md)
- Author: Denis O'Sullivan
- Published: Sep 14, 2026
- Type: Explainer

Italy’s data protection authority, the Garante per la protezione dei dati personali, has issued guidelines governing tracking pixels in email communications. The guidance says recipients must be told about tracking pixels regardless of the email’s purpose or sender, and that prior consent is required for many uses. Senders must comply by October 28, 2026; existing subscribers who signed up before April 29, 2026 need an opt-out opportunity, while subscribers from April 29 onward require prior, explicit consent for open tracking pixels. The guidance also includes complexities, including exemptions for some email types and different rules for opaque pixels, so senders are advised to review opt-in processes with legal or privacy teams. The change follows France’s earlier rules and may foreshadow similar action elsewhere in Europe.


### [121+ Cyber Monday email subject line examples in 2026](https://yomu.fyi/post/121-cyber-monday-email-subject-line-examples-in-2026.md)
- Company: [Twilio](https://yomu.fyi/company/twilio.md)
- Author: Jesse Sumrak
- Published: Sep 10, 2026
- Type: Tutorial

Cyber Monday email marketing depends on subject lines to help messages stand out in a crowded inbox, even when designs and discounts are strong. The guide recommends pairing subject lines with preview text, emphasizing exclusivity and urgency, stating discount amounts, using emojis selectively, and keeping copy concise. It also covers personalization, segmentation, pre-event notices, abandoned-cart messages, and reminders. More than 121 examples and templates are organized into Cyber Monday, pre-event, FOMO, abandoned-cart, and emoji-heavy categories, with additional seasonal resources. The post positions Twilio SendGrid for campaign execution and reports 75.1 billion emails processed during Cyber Week in 2025, a 14.6% increase over the previous record-breaking sending, but provides no comparative performance results for the example lines.


### [Holiday email marketing best practices for 2026 (and beyond)](https://yomu.fyi/post/holiday-email-marketing-best-practices-for-2026-and-beyond.md)
- Company: [Twilio](https://yomu.fyi/company/twilio.md)
- Author: Jesse Sumrak
- Published: Sep 8, 2026
- Type: Tutorial

Holiday email marketing carries higher volume and stakes during the seasonal shopping period, making planning, deliverability, personalization, and post-holiday retention central concerns. The guide recommends warming sending volume before Black Friday and Cyber Monday, increasing it by only 25–40% at a time to avoid sudden mailbox-provider signals. It also calls for a calendar with one or two lower-volume days each week, list hygiene, segmentation, testing, and journey-driven campaigns that account for shipping and fulfillment constraints. For holiday-season signups, the post-holiday process uses sign-up date or source cohorts, monitors open and click rates, and can reduce frequency, run re-engagement campaigns, or suppress addresses after 30–60 days without engagement. Examples and templates emphasize concise, value-driven content, specific offers, and personalization such as location or past purchases.


### [Six Steps to Improve Your Sender Reputation](https://yomu.fyi/post/six-steps-to-improve-your-sender-reputation.md)
- Company: [Resend](https://yomu.fyi/company/resend.md)
- Published: May 20, 2026
- Type: Tutorial

Sender reputation is the largely private assessment that inbox service providers such as Gmail, Outlook, and Yahoo make before deciding where to deliver email. It reflects infrastructure compliance, sending history and consistency, list hygiene, mail frequency, and recipient engagement, with providers increasingly emphasizing domain reputation over IP reputation. The guide recommends six recovery steps: audit SPF, DKIM, and DMARC; warm up new domains gradually; identify provider-specific blocks or blocklists; clean and segment lists; make unsubscribing easy; and send valuable, mobile-friendly content. It also advises using double opt-in, monitoring engagement, bounce and spam responses, throttling, and DMARC reports, while tightening policies or requesting provider reviews after fixes. Because providers continually reevaluate senders, reputation management requires repeated observation, testing, and adjustment rather than a one-time repair.


### [Custom Tracking Domains](https://yomu.fyi/post/custom-tracking-domains.md)
- Company: [Resend](https://yomu.fyi/company/resend.md)
- Published: Apr 16, 2026
- Type: Announcement

Resend has launched custom tracking domains, making the feature free for all users. Email tracking typically relies on shared domains, so another sender’s reputation can affect deliverability. Users configure the feature at the domain level by adding a required DNS record, after which Resend routes tracking through the custom domain; both click and open tracking are disabled by default. Click tracking records link clicks through redirects, while open tracking records image downloads from a 1x1 transparent pixel. Custom domains align tracking links with the sending domain, avoid unfamiliar recipient-facing domains, and can improve deliverability; API configuration accepts open and click tracking flags plus a tracking subdomain, while webhooks emit real-time open and click events.