Email Marketing Agency

An agency can start without buying enterprise software if clients provide access to their existing email platforms.

The agency should generally work inside client-owned accounts rather than making the client's subscriber database dependent on an account controlled only by the agency.

The client normally pays these expenses.

1. Audit the client's existing email platform, list, automations, and tracking.

2. Confirm who owns the sending domain and subscriber database.

3. Verify SPF, DKIM, and DMARC configuration where required.

4. Identify the highest-value missing campaigns or lifecycle flows.

5. Define which conversions and revenue should count toward reporting.

6. Build or revise templates, segments, and automations.

7. Test links, events, tracking, and unsubscribe behavior.

8. Launch campaigns or flows.

9. Monitor revenue, conversions, spam complaints, unsubscribes, and deliverability.

10. Remove weak campaigns and expand flows that produce measurable value.

Email agencies working with ecommerce clients commonly manage:

• welcome flows;

• abandoned-cart emails;

• abandoned-browse emails;

• post-purchase flows;

• product recommendations;

• replenishment reminders;

• win-back campaigns;

• promotional newsletters.

Klaviyo is commonly used for this type of work because it combines customer profiles, ecommerce events, segmentation, campaigns, and automation.

Klaviyo operates an Agency Partner Program specifically for agencies, consultants, systems integrators, freelancers, and other service providers that work with Klaviyo customers.

For SaaS, email work can include:

• trial onboarding;

• activation sequences;

• feature education;

• upgrade prompts;

• renewal reminders;

• churn prevention;

• inactive-user reactivation.

A SaaS email agency should distinguish transactional messages from marketing messages because sender rules and unsubscribe requirements can differ.

For creators and Newsletter Business, agency work can include:

• broadcast production;

• sponsorship placement;

• paid subscription promotion;

• referral campaigns;

• audience segmentation;

• launch sequences.

Email Marketing covers the broader economics and platform mechanics behind these campaigns.

Deliverability is one of the most important technical responsibilities in email work.

Google requires all senders to Gmail accounts to use SPF or DKIM authentication.

Senders that send around 5,000 or more messages to personal Gmail accounts within 24 hours are treated as bulk senders.

Bulk senders must additionally:

• use SPF and DKIM;

• publish a DMARC record;

• maintain valid DNS records;

• use TLS;

• support one-click unsubscribe for promotional messages;

• include a visible unsubscribe link;

• keep user-reported spam rates below 0.3%.

Google recommends staying below 0.1% spam rate and avoiding 0.3% or higher.

Once Gmail classifies a domain as a bulk sender, that status does not expire.

Google Postmaster Tools can be used to monitor sending quality for messages sent to personal Gmail accounts.

Its dashboards include information related to:

• spam rates;

• domain reputation;

• IP reputation;

• authentication;

• delivery errors;

• compliance status.

Google states that Postmaster Tools data is not real-time and typically updates within about 24 hours, although updates can take longer.

For an agency handling high-volume clients, access to Postmaster Tools can help separate deliverability problems from copy or campaign-performance problems.

Email platforms often report revenue attributed to campaigns and automations.

That number should not automatically be treated as incremental revenue created by the agency.

For example:

A repeat customer may already intend to buy, click an email, and complete the purchase.

The platform may attribute the sale to email even though some or all of the sale might have happened anyway.

Useful reporting can therefore separate:

• platform-attributed revenue;

• gross profit;

• new-customer revenue;

• repeat-customer revenue;

• recovered-cart revenue;

• controlled test results where available.

The client should generally retain ownership of:

• subscriber data;

• sending domain;

• email platform account;

• ecommerce integrations;

• analytics accounts.

The agency should receive the access level required to perform its work.

This reduces migration problems when the client changes agencies or brings email operations in-house.

Commercial email rules differ by country.

In the United States, the CAN-SPAM Act requires commercial email to include accurate sender information, non-deceptive subject lines, a valid postal address, and a functioning opt-out method.

Businesses must honor opt-out requests within 10 business days.

An agency can perform email work on behalf of a client, but outsourcing the campaign does not remove the underlying compliance obligations.

International clients can also be subject to privacy and direct-marketing rules such as GDPR and regional electronic-communications laws.

• Attribution can exaggerate performance. Platform-attributed revenue is not automatically incremental profit.

• One technical mistake can affect an entire domain. Authentication, spam complaints, and poor list practices can damage deliverability across campaigns.

• Client-owned infrastructure matters. Subscriber lists and sending domains should not become hostage to an agency-controlled account.

• Low-quality subscriber acquisition can undermine agency results. Better campaigns cannot fully compensate for irrelevant or purchased lists.

• Performance fees require precise definitions. Revenue-share contracts become difficult when attribution windows or customer journeys are ambiguous.

• Klaviyo — Agency Partner Program Agreement

• Kit — Pricing

• beehiiv — Pricing

• Google Gmail Help — Email Sender Guidelines

• Google Gmail Help — Email Sender Guidelines FAQ

• Google Gmail Help — Postmaster Tools Dashboards

• FTC — CAN-SPAM Act: A Compliance Guide for Business

• FTC — Online Advertising and Marketing