— David Bustos
david@sendgoodemails.com
David Bustos
Inbox (3) — career highlights
Metricool
Email Marketing, Templates & Studies Team Lead — 4M contacts, 50% open rate
Apr 2023
Send Good Emails
Founder (Side Project) — 400+ real sequences, 300+ users
Dec 2022
Subject Line Checker
Subject Line Checker — preview your subject line before you send
Apr 2026
Starter Story
Head of Email — Starter Story — HubSpot-acquired · 55% open rate · 6-fig revenue
Feb 2019
Mallorca Tech Newsletter
Founder, 5 years — 60% open rate, 18% CTR, weekly for 5 years
Feb 2018
← Back to Inbox
New Message — Re: the person behind the emails ×
david@sendgoodemails.com
you@wherever.com

Hey,

I help brands show up in inboxes without being that email people regret opening. It all started with a scrappy little niche newsletter that grew to 2,000 subscribers. Fast forward a few years, and now I’m sending millions of emails every month.

I obsess over subject lines, timing, and all the little levers that make an email impossible to ignore. When I run into a problem often enough, I build something — like the Subject Line Checker, a free tool and Chrome extension to preview how your subject line looks before you send.

Outside the inbox, you’ll usually catch me quoting sitcoms and loudly insisting that Last.fm is, still today, the best thing ever.

Email strategy Copywriting Segmentation Mautic Beefree Newsletter growth EN / ES Subject line nerd

Sent — 3 delivered · 0 bounced
sendgoodemails.com — the email marketer’s swipe file
from: david@sendgoodemails.com
● Live

A curated database of 400+ real email marketing sequences used by 300+ professionals from Automattic, Change.org, Userlist, and Planned Parenthood. Built as a reference tool for email marketers and solo founders who want to study what actually works before hitting Send.

→ sendgoodemails.com

400+ sequences
300+ users
$0/month
Mallorca Tech Newsletter — 5 years, weekly, no skipped issues
from: david@mallorcatech.es
Archived

Weekly digest of tech news and jobs for Mallorca’s startup scene. 60% open rate, 18% CTR throughout its run. Sponsored by eDreams and Doist. Built and ran it solo for 5+ years.

60% open rate
18% CTR
5 yrs solo
Subject Line Checker — preview before you send
from: david@sendgoodemails.com
● Live

Free tool and Chrome extension to preview how subject lines render across Gmail, Apple Mail, Outlook, and Yahoo Mail. Built out of personal frustration — most ESPs don’t show truncation by default, and the only way to check was to send a test to someone’s mum’s Huawei.

→ Subject Line Checker  ·  → Chrome Extension

100% free
0 accounts
4 email clients
Drafts — 2 unsent
[Draft]
Chrome Visual Tab Switcher — keyboard tab switcher, publishing to Web Store soon
Jun 2026
[Draft]
Newsletter (no name yet) — email marketing for people who send the good ones
Jun 2026
Compose — Spam folder ×
david@sendgoodemails.com
We should talk about your inbox...

Open to freelance, consulting, and full-time roles in email marketing and content strategy. I work bilingually in English and Spanish and I’ve sent enough emails to know the difference between “it went to spam” and “nobody wanted to open it.”

If you need someone who genuinely cares about email — not just as a channel, but as a craft — let’s talk.

✉️ david@sendgoodemails.com 💼 linkedin.com/in/davidbf 💻 sendgoodemails.com

david@sendgoodemails.com · Emails sent this month: many_ · Open rate: obsessing over it · ? keyboard shortcuts

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David Bustos

Hello, I’m David! 👋

✉️ david@sendgoodemails.com
💼 linkedin.com/in/davidbf
🎧
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