The IGSendMail Blog

    Practical, no-fluff email marketing writing for operators who care about open rates, click-through, deliverability, and real revenue. Every post is written by people who actually run programs at scale, not freelancers chasing keywords.

    Whether you're sending your first welcome series or migrating a million-subscriber list off legacy ESPs, you'll find guidance grounded in shipped campaigns, A/B test results, and conversations with deliverability engineers at the major mailbox providers. We update older posts when standards change so you never end up implementing advice that became obsolete two years ago.

    What you'll find here

    Deliverability deep dives

    SPF, DKIM, DMARC, BIMI, postmaster tools, sender reputation, warming new IPs, recovering from blacklists, and decoding bounce codes. The technical layer most marketers ignore until it breaks.

    Automation playbooks

    Welcome series, abandoned cart sequences, browse abandonment, post-purchase, win-back, and lifecycle journeys. Each playbook ships with timing recommendations, copy frameworks, and benchmark conversion rates.

    Growth and list building

    Lead magnets, popup conversion strategy, double opt-in mechanics, list hygiene, segmentation models, and how to grow a list ethically without buying contacts that will torch your reputation.

    Strategy and product updates

    Industry analysis, regulatory changes (GDPR, CAN-SPAM, Apple MPP, Yahoo and Gmail bulk sender requirements), and what's shipping inside IGSendMail. The why behind the what.

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    Showing 56 posts

    35 Re-Engagement Email Subject Lines
    Email Copywriting

    35 Re-Engagement Email Subject Lines

    35 re-engagement email subject lines organized by the five angles that actually convert dormant subscribers: the breakup, the permission ask, the catch-up, the incentive, and the curiosity gap. Includes the three-email sequence structure, segmentation rules, and realistic benchmarks for win-back open and reactivation rates.

    Erin Moore
    Erin Moore
    Aug 11, 20268 min read
    Reverse DNS for Email: Why PTR Records Matter
    Deliverability

    Reverse DNS for Email: Why PTR Records Matter

    Reverse DNS maps your sending IP back to a hostname via a PTR record, and receiving servers check it before they decide whether to trust you. Here is how PTR records work, what forward-confirmed reverse DNS proves, who controls the record, how to verify it in two minutes, and the mistakes that quietly cost you inbox placement.

    Erin Moore
    Erin Moore
    Aug 10, 20268 min read
    40 Welcome Email Subject Lines That Get Opened
    Email Copywriting

    40 Welcome Email Subject Lines That Get Opened

    Welcome emails earn the highest open rates of any campaign type - and the subject line decides whether that advantage survives. Here are 40 welcome email subject lines across five proven patterns, the rules that separate the good ones from filler, and how to build them into a five-email sequence that converts new subscribers instead of just greeting them.

    Erin Moore
    Erin Moore
    Aug 10, 20268 min read
    BIMI Records: Setup, Requirements, and Value
    Deliverability

    BIMI Records: Setup, Requirements, and Value

    BIMI puts your brand logo next to your emails in supporting inboxes, but only after DMARC enforcement and a verified mark certificate. Here is what BIMI requires, how to publish the record, how to prepare an SVG Tiny PS logo, where it actually renders, and how to decide whether the annual certificate cost is worth it for your sending program.

    Erin Moore
    Erin Moore
    Aug 9, 20268 min read
    Clever Email Subject Lines (and Why They Work)
    Email Copywriting

    Clever Email Subject Lines (and Why They Work)

    Clever email subject lines work because they combine curiosity, specificity, and relevance — then pay off the promise inside the email. Here are the five mechanics behind lines that get opened, twelve annotated examples you can adapt, formatting rules that quietly change performance, and a testing workflow that replaces guessing with evidence.

    Erin Moore
    Erin Moore
    Aug 9, 20268 min read
    Spam Complaint Rate: Benchmarks and Fixes
    Deliverability

    Spam Complaint Rate: Benchmarks and Fixes

    Spam complaint rate is the share of delivered emails marked as spam. Gmail and Yahoo cap bulk senders at 0.3%. Here are realistic benchmark bands, the real causes of complaints, seven fixes that work fast, and a 30-day plan to bring the number down.

    Erin Moore
    Erin Moore
    Aug 8, 20268 min read
    30 Email Newsletter Content Ideas
    Email Copywriting

    30 Email Newsletter Content Ideas

    Thirty specific email newsletter ideas organized into five repeatable buckets — teach, show, ask, share, and sell — plus a twelve-week rotation calendar and a method for turning one idea into three issues. Stop staring at a blank editor and start shipping on a cadence you can actually sustain.

    Erin Moore
    Erin Moore
    Aug 8, 20268 min read
    Google Postmaster Tools: A Practical Guide
    Deliverability

    Google Postmaster Tools: A Practical Guide

    Google Postmaster Tools is the only first-party view of how Gmail sees your sending domain. Here is how to set it up, read every dashboard, interpret your spam rate honestly, and build a ten-minute weekly monitoring routine that catches placement problems before revenue drops.

    Erin Moore
    Erin Moore
    Aug 7, 20268 min read

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