# What an email marketing company sells
> Software, agency hours, and lists all show up under 'email marketing company.' Those are different products. Here is how to tell them apart.
- HTML: https://omentir.com/email-marketing-company
- Markdown: https://omentir.com/email-marketing-company.md

## The search results mix three businesses

Type 'email marketing company' and you get ESPs, agencies, and data brokers. An ESP sells you software to send and store the list. An agency sells people who write, design, and report. A data company sells addresses, intent files, or enrichment. Paying one does not replace the other two. A lot of bad RFPs assume it does.

Ask what the invoice is for: seats and contacts, retainers and production hours, or records. If the answer is 'all of it, bundled,' get the line items anyway. Bundles hide which part you could buy cheaper alone.

*Those firms sell production. Ask who owns the ESP login.*

## Software companies

These are the brands people mean when they say 'we use Mailchimp' or 'we live in HubSpot.' [Mailchimp](https://mailchimp.com), [Klaviyo](https://www.klaviyo.com), [HubSpot](https://www.hubspot.com), [ActiveCampaign](https://www.activecampaign.com), [Brevo](https://www.brevo.com): they host templates, segments, and the send pipe. You still need a list, a point of view, and someone who hits send. The company is not your marketing department unless you also bought services, which some of them resell.

Read the data-processing agreement. The software company is a processor of your list. If they go down, or you leave, you need an export. That is a company-selection criterion, not an IT afterthought.

## Agencies and production shops

These firms sell campaigns, retainers, and sometimes 'we'll run Klaviyo for you.' The deliverable is work, not a login. A good one will tell you which ESP they prefer and why. A weak one will insist you move platforms because their templates live there. The list should stay in an account you admin. If the agency is the only admin, you hired a hostage situation.

## List and data shops

They sell contacts, technographics, or 'verified emails.' Some of that is enrichment on people who already know you. Some of it is cold files. The second kind is not email marketing in the permission sense. It is outbound list supply. Treat it as a different aisle, closer to a sales-intel vendor than to an ESP.

If the company's case study is 'we added 12,000 emails last quarter' and never mentions opt-in source, walk. Volume without provenance is how domains get burned. Domain and IP warmup after a bad file is still email-aisle repair, not a creative problem.

## Related

- [Email marketing templates](https://omentir.com/email-marketing-templates.md)
- [Email marketing news](https://omentir.com/email-marketing-news.md)
- [Email marketing system](https://omentir.com/email-marketing-system.md)

## Common questions

**Can one company be all three?**

Some agencies resell an ESP and a data tool. You can still insist on separate contracts and on owning the ESP account. When the relationship ends, you want the list and the templates, not a PDF of last month's opens.

**Is a 'full-service email marketing company' better?**

Full-service means they will take more of the work. It does not mean they are better at deliverability, design, or copy. Ask for a named strategist, a named ESP admin, and a sample of emails they shipped for a business that looks like yours, not a mood board.

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