Email Marketing Services: What's Included, What It Costs, What to Demand
Email is consistently the highest-ROI digital marketing channel. Here's what full email marketing services actually cover, and how to evaluate a provider.

Email marketing services run your campaigns for you. They run your automated emails too. The work covers strategy, making the emails, and day to day care. Email is your best digital channel for return. Industry research puts the average return at $36 to $42 per dollar spent. But you need a clear plan. You also need careful work to get there.
Through The Glass Creatives builds email programs that fit you. They match your brand voice. They match your CRM data. They match the whole customer journey. This is not batch and blast email. Here is what good email work looks like. Here is what to ask of any provider.
Want to know what it costs? email marketing pricing breaks down agency rates by tier. Stuck between email and paid social? social media management services gives you a useful comparison.
What Email Marketing Services Include
Strategy and List Architecture
Good work starts before any email goes out. First you plan how to split your list. Then you set the rules for each automation. Next you build the campaign calendar. You also name the lifecycle stages that matter. Those stages are awareness, nurture, conversion, retention, and reactivation. Then you map an email to each stage.
Campaign Creation and Copywriting
Campaign creation has many parts. One part is the writing. Another part is the design. That may be an HTML template or a custom build. You test subject lines. You tune send times. You split the list for each send. Good email copy fits your brand. It sounds like you, not like a template.
Automation and Flow Management
Automation is the most valuable email work. It includes welcome sequences and abandoned cart flows. It also includes post purchase nurture and win back campaigns. Some sequences fire when a person acts. These run all the time. Their value grows over time. Setup takes real work up front. Keeping them tuned is ongoing.
Deliverability and List Health
Deliverability matters most of all. It is the share of emails that reach the inbox. The rest land in spam. The work is technical, so people often skip it. Good providers watch your sender reputation. They watch bounce rates and opt out patterns. They watch how people engage. They act fast when those numbers slip. A damaged sender domain can take months to recover.
"Email that doesn't reach the inbox is just infrastructure cost. Deliverability hygiene is the unglamorous work that makes everything else possible."
Metrics That Should Appear in Every Report
Delivered rate and inbox placement rate, not just how many you send
Open rate and click through rate by segment and campaign type
Email brings in money. So look at session and conversion data. You can find this in your analytics. Put it in every report.
Unsubscribe rate and list health trend
Flow results: money per email and per flow, above all for automation sequences
Sources
- Litmus - "State of Email 2025." Litmus, 2025.
- Klaviyo - "Email Marketing Benchmarks 2026." Klaviyo, 2026.
- Campaign Monitor - "Email Marketing ROI Data." Campaign Monitor, 2025.
- Mailchimp - "Email Marketing Statistics and Benchmarks." Mailchimp, 2025.
Build an email program that works. Talk to TTGC about strategy, automation, and copy.
Book a free Brand and Growth Assessment and see exactly how Through The Glass Creatives would approach it.









