Which US email marketing companies can show real results?

They have a US office and at least 10 reviews, but no published email project and fewer than 3 reviews describing email work – several are book publishers or development shops. Their rating tells you little about their email skills.

These 10 agencies appear on the US listing with at least 10 reviews but have no US office, so they are not ranked here. Several have strong email portfolios – useful if time-zone overlap is not critical.

1. The sample

Sortlist lists 1,158 email marketing providers on this page. We evaluated the 220 agencies on the first three pages of the listing, in its relevance order. 27 of them have at least 10 verified client reviews – our threshold for a rating to be meaningful. None of them pays for a sponsored placement. Of these, 12 agencies with a US office and at least one published email marketing project on Sortlist or 3 client reviews describing email work were ranked, with 447 verified reviews between them and an average rating of 4.87; the 15 others are listed separately.

2. The score

3. Independence

• Sortlist is a marketplace, not an agency: it does not appear in its own ranking.
• Agencies cannot pay to enter the ranking or to move up. Agencies with a sponsored placement on this listing are excluded from scoring and shown separately.
• The order of the listing page, subscriptions and badges play no part in the score – only the three criteria above.

4. Limits

Reviews reflect each agency’s work across all its services, and agencies with few reviews may be excellent but are not yet scored. That is why every entry says what it is best for – and when another agency would suit you better. The ranking is updated regularly.

An email marketing company should be able to show you each of these – and the revenue or pipeline each one brings:

Tip: since 2024, Gmail and Yahoo require bulk senders to authenticate their domain and offer one-click unsubscribe. Ask any agency to check yours in the first week – it is the cheapest win in email.

Writing to a business is different from writing to a consumer: the reader is busy, judged on results, and often not the only decision-maker. A structure that works:

1. 1

   Subject line: the topic, not a teaser

   Six to eight words that say what it is about, e.g. “Cutting your invoice processing time in half”.

2. 2

   First line: about them

   A specific observation about their company, sector or a recent event – not about you.

3. 3

   One problem, one result

   The problem you solve for companies like theirs and one concrete result, ideally from a named or similar client.

4. 4

   One clear call to action

   A single, low-effort next step: a 15-minute call, a short guide, a reply with one word.

5. 5

   Signature that builds trust

   Name, role, company, phone – no banners or long legal blocks above the fold.

A template you can adapt

Subject: [Topic that matters to them, in 6–8 words] Hi [First name], I noticed [specific fact about their company: an event, a hire, a launch]. Companies like [their segment] often struggle with [one problem]. For [similar client or type of client], we [what you did] and [one measurable result]. Worth a 15-minute call next week to see if it fits? [Name] · [Role] · [Company] · [Phone]

Before sending to people who have not opted in, check the rules: in the US, commercial emails must follow CAN-SPAM (clear sender, honest subject, physical address, working opt-out); other countries are stricter.

Among the 12 ranked agencies, 6 start at €1,000, 3 accept smaller projects and 1 start at €3,000 or more. Your email platform is billed separately, usually by number of contacts.

Tip: before migrating or signing, suppress contacts who have not opened or clicked for a long time. You stop paying for them on your platform and your deliverability improves.