How to Create an Email Blast: Step-by-Step Guide

How to Create and Send an Email Blast (Step by Step)

An email blast is a single message sent to a large segment of your list at once — a launch announcement, a sale, a newsletter. Done well, it pays for a month of writing time. Done badly, it tanks your sender reputation and kills future opens.

This guide walks through creating an email blast in AuthorMailingLists.com from a blank canvas to a sent campaign, with the deliverability and design checks that separate a 45% open rate from a 12% one.

Before you start: three things to confirm

Your domain is authenticated. DKIM and SPF records need to be live. Without them, Gmail and Yahoo route you to spam by default as of February 2024.
Your list is clean. If you imported a CSV more than 90 days ago and haven't mailed it, expect 5–15% bounces. Run a re-engagement campaign first or segment to recent subscribers.
You have one clear goal. "Sell the new book," "drive 200 preorders," "get 50 ARC signups." Not three goals. One.

If any of those three are shaky, fix them before drafting. A beautiful blast to a dirty list still hurts you.

Step 1: Open the campaign composer

From the dashboard, click Campaigns in the left nav, then New Campaign. Pick Email Blast as the campaign type (versus Always-On newsletter or automated sequence).

Starting a new email blast from the Campaigns tab

Step 2: Choose your audience

Select the list you want to send to. If you have more than 2,000 subscribers, segment by engagement — opened in the last 90 days is a safe default. New senders often blast their full list and get flagged for low engagement; sending to your active 60% first warms the campaign before you hit cold subscribers.

Choosing a list and engagement segment for the send

If you're still building your list, see How to Grow Your Email List before you spend time on design.

Step 3: Write the subject line and preheader

The subject line decides whether anyone reads the rest. Two rules:

Keep it under 50 characters so mobile doesn't truncate it.
Make a specific promise. "New book out" loses to "Ridgeline #4 is live — first chapter inside."

The preheader is the gray text after the subject in the inbox. Don't waste it repeating the subject. Use it to extend the hook.

Step 4: Design the email

For authors, plain-text-style emails outperform heavy HTML templates by a wide margin. Readers signed up because they like your voice. Show it.

A reliable structure:

One-line opener that sounds like you
The news (book launch, sale, event) in two short paragraphs
A single primary call to action — one button, one link
A P.S. with a secondary link or a personal note

If you want a branded header image, keep it under 600px wide and under 200KB. Always include alt text — many subscribers read with images off.

The email designer with a simple author-style layout

Step 5: Set up an email blast template you can reuse

Once a layout works, save it. In the composer, click Save as Template and name it something you'll recognize six months from now ("Launch — single image + CTA" beats "Template 4"). Next time, you start from the working version instead of a blank page.

Step 6: Run an A/B subject test

If your list is over 1,000 subscribers, A/B test two subject lines on 20% of the list, then send the winner to the remaining 80%. The composer handles the split and the timing automatically — you just write two subjects.

Don't test design and subject in the same campaign. You won't know which variable moved the number.

Step 7: Send yourself a test

Send a test to at least three inboxes: Gmail, Outlook, and your phone. Check:

Does the from-name look right? ("Jane Doe" not "jane@")
Do links work and point to the right URL with tracking parameters?
Does the email render in dark mode without disappearing text?
Does the unsubscribe link work?

This takes four minutes and catches embarrassing mistakes 90% of the time.

Step 8: Schedule or send

For most author audiences, Tuesday through Thursday between 9am and 11am in your readers' primary timezone performs best. Saturday morning is a strong second for fiction. Avoid sending right before a major holiday — your message gets buried.

Scheduling the campaign for a specific date and time

Click Send (or Schedule) and resist the urge to refresh the dashboard for the next hour. Bounces and unsubscribes happen on every send — they're normal up to about 2% bounce and 0.5% unsubscribe. Above that, look at list hygiene.

After the send: read the report

Give it 48 hours, then check open rate, click rate, and unsubscribes. Compare against your last three blasts, not against industry averages — your list is yours. If opens dropped meaningfully, the subject line is the first suspect. If clicks dropped, the call to action is.

Need to keep the momentum going between launches? The Always-On weekly newsletter drafts itself from your book catalog so you stay in inboxes without writing from scratch every week. And if you're still building the list itself, start with how to make an email list.

Frequently asked

How do I create an email blast for the first time?

Start with a clean list and an authenticated sending domain (DKIM and SPF set up). Open the campaign composer, pick the list or segment, write a specific subject line under 50 characters, draft a short body with one clear call to action, and send a test to Gmail, Outlook, and your phone before scheduling. First-time senders should keep it simple — plain text with one link beats a heavy template. Aim for Tuesday–Thursday morning in your readers' timezone.

How do I make an email blast that doesn't land in spam?

Three things matter most. First, authenticate your sending domain with DKIM and SPF — Gmail requires this for bulk senders. Second, send to engaged subscribers first; blasting cold contacts kills your reputation. Third, avoid spam triggers in the subject (all caps, excessive punctuation, words like FREE!!!). AuthorMailingLists.com handles the technical deliverability through AWS SES with bounce and complaint auto-handling, but list quality and content are still your job.

How do I create an email blast template I can reuse?

Build the layout once in the campaign composer — header, body structure, footer, fonts, and colors — then click Save as Template. Name it descriptively so future-you can find it: "Launch announcement" beats "Template 1". Reusable templates cut campaign setup from 40 minutes to about 10 and keep your branding consistent. Keep at least three on hand: a launch template, a sale template, and a plain newsletter template.

How do I design an email blast that gets opened and clicked?

Design follows function. For author audiences, keep emails close to plain text with a single primary call to action — one button, one link. Use a header image only if it adds something the words can't. Keep total width under 600 pixels, total weight under 200KB, and always include alt text for images. Most importantly, write like you talk to readers, not like a marketing department. Voice is the whole reason they subscribed.

How do I design an email campaign that fits a longer launch plan?

Treat the blast as one beat in a sequence, not a standalone event. A typical book launch runs four emails: announcement two weeks out, excerpt or behind-the-scenes one week out, launch day, and a follow-up three days later with reviews or bonus content. Each email should reference the others lightly so subscribers feel a thread, not a burst. Save each as a template so you can run the same playbook on the next book.

How do I set up an email blast to only part of my list?

In the composer's audience step, choose your list, then add a segment filter. Common useful segments: opened in last 90 days (your active readers), never opened (re-engagement candidates), tagged by which book they signed up from, or imported before a certain date. Segmenting a 5,000-person list down to the 2,800 who actually read your emails usually improves open rate by 15–25 points and protects your sender reputation on the next send.