Top Email Marketing Companies in the United States
From New York’s media and finance brands to San Francisco’s SaaS leaders and Austin’s fast-growing startups, the United States is a powerhouse for email marketing talent. U.S. agencies pair strategy, creative, and deliverability expertise to drive lifecycle growth—from welcome and onboarding to re‑engagement and win‑back.
Clutch helps you find trusted partners by verifying client reviews, analyzing portfolios, and assessing service focus and industry experience. Use filters to narrow by budget, location, platform expertise (e.g., Klaviyo, Salesforce Marketing Cloud, HubSpot, Braze), and industries like ecommerce, healthcare, or fintech. Start broad, then compare shortlists by case studies, team certifications, and reported outcomes.
Explore these additional resources:
• Top Email Marketing Companies
• Email Marketing Companies in New York
-
Featured
What are Featured Providers?
$1,000+$100 - $149 / hr50 - 249Serves United StatesServices provided
See all 71 projectsInbox Army, LLC is an email marketing company renowned for its expertise in Email Campaigns, Email List Management, and Automated Email Campaigns. They consistently receive positive feedback for their meticulous quality assurance, responsive project management, and creative, on-brand email solutions, with over 90% of reviews highlighting their professional and timely service. Clients particularly appreciate their ability to enhance email engagement and conversion rates.
$1,000+$150 - $199 / hr2 - 9Serves United StatesServices provided
See all 29 projectsOne 10 Media is an email marketing agency specializing in lifecycle email campaigns, automated email flows, and SMS marketing. The company consistently receives high praise for strategic email engagement strategies, with reviews highlighting a significant increase in email revenue, such as a growth from 13% to over 48% for one client. Clients commend their professional communication, with 100% of the reviews mentioning timely delivery and responsiveness.
$1,000+$50 - $99 / hr2 - 9Serves United StatesServices provided
See all 24 projectsMH Digital is an email marketing agency that excels in delivering comprehensive email automation and email engagement strategies. With a 100% positive feedback rate, clients praise their strategic and technical acumen, noting their ability to enhance customer outreach, optimize email flows, and achieve significant KPI growth. Their expertise in crafting automated email campaigns and insightful strategic advice has consistently exceeded client expectations and driven substantial business success.
-
$1,000+$50 - $99 / hr10 - 49El Segundo, CA
Services provided
See all 1 projectsVegaOne - Digital Marketing Agency provides WordPress website design, social media marketing, PPC, email marketing, and content marketing services. Client feedback indicates successful outcomes, particularly in keyword ranking stability on Google. While project management is generally timely and responsive, occasional delays due to workload have been noted, suggesting a need for more developers.
-
$1,000+$50 - $99 / hr10 - 49Dallas, TX
Services provided
101Media, a Marketing Strategy company, focuses on Marketing Strategy and Event Marketing. The firm is in Dallas, Texas.
Read more -
$1,000+$100 - $149 / hr10 - 49South Jordan, UT
Services provided
Established in 2020, Custom Marketing Solutions is a SEO agency. The small team focuses on Search Engine Optimization and Pay Per Click.
Read more -
$5,000+$150 - $199 / hr10 - 49Lexington, KY
Services provided
Based Agency, an Advertising company, is in Lexington, Kentucky. The team focuses on Advertising and Web Design.
Read more -
UndisclosedUndisclosed10 - 49Gardiner, NY
Services provided
Blue Ocean Technology, LLC is a web development company. The small Gardiner, New York-based team focuses on Web Development and Social Media Marketing. The firm was founded in 2000.
Read more -
$1,000+$100 - $149 / hr10 - 49West Hollywood, CA
Services provided
Great Marketing AI is a PPC agency. Founded in 2023, their team focuses on Pay Per Click and Marketing Strategy.
Read more -
$1,000+$25 - $49 / hr10 - 49Somerville, NJ
Services provided
Outside ROI is a Digital Strategy company. They were established in 2015, and their services include Digital Strategy and Social Media Marketing.
Read more -
UndisclosedUndisclosed10 - 49Cerritos, CA
Services provided
Brand Pro Max is a Digital Strategy company founded in 2025. The team focuses on Digital Strategy and Social Media Marketing and is based in Cerritos, California.
Read more -
$1,000+$25 - $49 / hr10 - 49Austin, TX
Services provided
DigiFlav is a web development company. In Austin, Texas, the firm was established in 2018. Their services include Web Development and Search Engine Optimization.
Read more -
UndisclosedUndisclosed10 - 49Atlanta, GA
Services provided
SEO agency Benzify was founded in 2024. The firm focuses on Search Engine Optimization and Advertising, and is small.
Read more -
UndisclosedUndisclosed2 - 9Akron, OH
Services provided
Cogneato is an Email Marketing company. Located in Akron, Ohio, the team offers Email Marketing and Search Engine Optimization.
Read more -
UndisclosedUndisclosed2 - 9Boulder, CO
Services provided
DigiZen Marketing Group LLC is an Email Marketing company. Established in 2014, their team provides Email Marketing and Web Design.
Read more -
UndisclosedUndisclosed2 - 9Sarasota, FL
Services provided
Think Donson is an Email Marketing company. The small Sarasota, Florida-based team provides Email Marketing and Web Design. The agency was established in 2013.
Read more -
UndisclosedUndisclosed2 - 9Moscow Mills, MO
Services provided
JuicedUp Marketing LLC. Is an Email Marketing company. Their small team is in Moscow Mills, Missouri. Their services include Email Marketing and Web Design.
Read more -
UndisclosedUndisclosed2 - 9Holden, MA
Services provided
Established in 2010, Velocity Marketing, a small Email Marketing company, is based in Holden, Massachusetts. Their team focuses on Email Marketing and Web Design.
Read more -
UndisclosedUndisclosed2 - 9Olathe, KS
Services provided
Braintrust Interactive is an Olathe, Kansas-based social media marketing company. They offer Social Media Marketing and Email Marketing and were founded in 2015.
Read more -
UndisclosedUndisclosed2 - 9Youngsville, LA
Services provided
Small Email Marketing company 10X Interactive , is located in Youngsville, Louisiana. The team specializes in Email Marketing and SMS Marketing.
Read more -
$5,000+Undisclosed10 - 49New York, NY
Services provided
See all 4 projectsFlowd is an email marketing company specializing in email outreach and lead generation services. The company consistently receives positive feedback, with reviewers praising their prompt communication and effective email engagement strategies. Approximately 100% of reviewers highlight their strong project management and seamless integration with clients, while noting there are no areas for improvement.
-
$1,000+$100 - $149 / hr10 - 49Washington, DC
Services provided
Mothership Strategies, an Email Marketing company, was founded in 2013. Headquartered in Washington, District of Columbia, the team focuses on Email Marketing and Advertising.
Read more -
$5,000+$100 - $149 / hr10 - 49New York, NY
Services provided
Endai is an Email Marketing company headquartered in New York, New York. The team offers Email Marketing and Social Media Marketing.
Read more -
$1,000+$25 - $49 / hr10 - 49Centennial, CO
Services provided
Access Marketing Company is a branding agency. They are based in Centennial, Colorado. Their team provides Branding and Email Marketing.
Read more -
UndisclosedUndisclosed10 - 49Wichita, KS
Services provided
Results Driven Marketing is a Mobile & App Marketing company. Located in Wichita, Kansas, the company was established in 1998. Their services include Mobile & App Marketing and Direct Marketing.
Read more -
UndisclosedUndisclosed10 - 49Provo, UT
Services provided
ANS (American Name Services), an Event Marketing company, was founded in 1995. The firm focuses on Event Marketing and Email Marketing.
Read more -
UndisclosedUndisclosed10 - 49Orlando, FL
Services provided
MyCitySocial Digital Marketing is an Email Marketing company. In Orlando, Florida, their small team provides Email Marketing and Mobile & App Marketing. The agency was launched in 2007.
Read more -
UndisclosedUndisclosed10 - 49Los Angeles, CA
Services provided
Optimal Fusion is an Email Marketing company. Launched in 1996, the agency is based in Los Angeles, California. Their services include Email Marketing and Advertising.
Read more -
UndisclosedUndisclosed10 - 49Schaumburg, IL
Services provided
Inmarketsolution, Inc is a Direct Marketing company. Founded in 2015, the company provides Direct Marketing and Email Marketing.
Read more -
UndisclosedUndisclosed10 - 49Manchester, NH
Services provided
Talient Action Group is a graphic design agency. They provide Graphic Design and Print Design and were founded in 1998. The firm is headquartered in Manchester, New Hampshire.
Read more -
UndisclosedUndisclosed10 - 49Buffalo Grove, IL
Services provided
A & A Marketing Inc is a Market Research company. Their small team is based in Buffalo Grove, Illinois. Their services include Market Research and Media Planning & Buying.
Read more -
UndisclosedUndisclosed10 - 49Orange, CA
Services provided
NetFusion Media, an Advertising company, was founded in 2004. The team provides Advertising and Email Marketing and is in Orange, California.
Read more -
UndisclosedUndisclosed10 - 49Santa Ana, CA
Services provided
Located in Santa Ana, California, Towne Allpoints is a small Direct Marketing company. The team provides Direct Marketing and Email Marketing.
Read more -
$5,000+$100 - $149 / hr10 - 49Dover, NH
Services provided
Small Email Marketing company Apeak Solutions, is based in Dover, New Hampshire. Their services include Email Marketing and Marketing Strategy.
Read more -
UndisclosedUndisclosed10 - 49Provo, UT
Services provided
In Provo, Utah, Pouch is a SEO agency. Launched in 2018, the team focuses on Search Engine Optimization and Social Media Marketing.
Read more -
UndisclosedUndisclosed10 - 49Chicago, IL
Services provided
Unific, an Ecommerce Marketing company, is in Chicago, Illinois and Akron, Ohio. They specialize in Ecommerce Marketing and Email Marketing.
Read more -
UndisclosedUndisclosed10 - 49New York, NY
Services provided
SDR LEAD is a Sales Outsourcing company. The agency is in New York, New York. Their services include Sales Outsourcing and Email Marketing.
Read more -
UndisclosedUndisclosed50 - 249Aventura, FL
Services provided
See all 1 projectsWhat if we are your dream marketing team? When you get a proposal, you’ll admit that you haven’t seen anything like it before. Ask for a quote to make sure you don't overpay.
Read more -
UndisclosedUndisclosed50 - 249Cedar Falls, IA
Services provided
Advertising company Mudd Advertising is headquartered in Cedar Falls, Iowa. Established in 1981, the team provides Advertising and Email Marketing.
Read more -
UndisclosedUndisclosed50 - 249Urbandale, IA
Services provided
The Stelter Company, a midsize Direct Marketing company, is located in Urbandale, Iowa. The team provides Direct Marketing and Email Marketing.
Read more -
UndisclosedUndisclosed50 - 249Nashville, TN
Services provided
IOSTUDIO is a branding agency headquartered in Nashville, Tennessee. They focus on Branding and Content Marketing.
Read more -
UndisclosedUndisclosed50 - 249Atlanta, GA
Services provided
Meeting Expectations is an Event Marketing company. Established in 1992, their team focuses on Event Marketing and Email Marketing.
Read more -
UndisclosedUndisclosed50 - 249Buffalo, NY
Services provided
Based in Buffalo, New York, Crowley Webb is a midsize Email Marketing company. Their services include Email Marketing and Logo.
Read more -
UndisclosedUndisclosed50 - 249Louisville, KY
Services provided
Advantage Concepts is a Digital Strategy company. They were launched in 2009 and focus on Digital Strategy and Email Marketing.
Read more -
UndisclosedUndisclosed50 - 249Milford, NH
Services provided
Just Drive Events is a midsize Email Marketing company headquartered in Milford, New Hampshire. The team focuses on Email Marketing and Event Marketing.
Read more -
UndisclosedUndisclosed50 - 249Chapel Hill, NC
Services provided
3 Birds Marketing LLC is a Digital Strategy company. They focus on Digital Strategy and Email Marketing and are based in Chapel Hill, North Carolina.
Read more -
UndisclosedUndisclosed50 - 249Carrollton, TX
Services provided
Insurance Technologies Corporation is an Email Marketing company. Founded in 1983, the team specializes in Email Marketing and Graphic Design.
Read more -
UndisclosedUndisclosed50 - 249Redwood City, CA
Services provided
Pierry Inc., A Wunderman Thompson Company, a CRM consulting and SI company, provides CRM consulting and SI and Email Marketing. The agency is based in Redwood City, California.
Read more -
UndisclosedUndisclosed50 - 249Buffalo, NY
Services provided
LocalEdge is an Email Marketing company. The Buffalo, New York-based team provides Email Marketing and Public Relations.
Read more -
UndisclosedUndisclosed50 - 249Bethel, CT
Services provided
Midsize Email Marketing company List Services Corporation, is headquartered in Bethel, Connecticut. The team focuses on Email Marketing and Search Engine Optimization.
Read more -
$1,000+$100 - $149 / hrFreelancerChesterfield, MO
Services provided
Austin Ambrozi is a small Digital Strategy company headquartered in Chesterfield, Missouri. The team offers Digital Strategy and Email Marketing.
Read more -
UndisclosedUndisclosed50 - 249Ellicott City, MD
Services provided
Grindstone Sales Support Experts is an Email Marketing company. They are located in Ellicott City, Maryland and have midsize team. They specialize in Email Marketing and Back Office Outsourcing.
Read more -
$1,000+$50 - $99 / hr50 - 249Orlando, FL
Services provided
Rainmaker.Uno is a Content Marketing company. Their team is headquartered in Orlando, Florida and offers Content Marketing and Search Engine Optimization.
Read more
Share your project goals, and we’ll connect you with verified partners who fit your budget and timeline.
Get My Matches
Tell us what you need — we’ll match you with top agencies in minutes.
Get My MatchesWhy Trust Clutch
At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.
Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.
Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.
We evaluate service providers using a structured methodology that combines:
- In-depth client interviews and ratings
- Comprehensive project details
- Market presence
- Portfolio examples and industry recognition
This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.
We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.
Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.
List of the Best U.S. Email Marketing Agencies
-
$1,000+$100 - $149 / hr50 - 249Grapevine, TX
Ability to deliver
38.2/40.018.4/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
70% Email Marketing30% Other -
$1,000+$100 - $149 / hr50 - 249Staten Island, NY
Ability to deliver
37.3/40.018/20 Reviews9.7/10 Clients & Experience9.6/10 Market PresenceService focus
60% Email Marketing40% Other -
$1,000+$50 - $99 / hr10 - 49Newport, RI
Ability to deliver
36.1/40.016.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
90% Email Marketing10% Other -
$1,000+$50 - $99 / hr2 - 9Denver, CO
Ability to deliver
34.2/40.016.8/20 Reviews10/10 Clients & Experience7.4/10 Market PresenceService focus
90% Email Marketing10% Other -
$10,000+Undisclosed2 - 9San Francisco, CA
Ability to deliver
33.4/40.015.6/20 Reviews9.2/10 Clients & Experience8.6/10 Market PresenceService focus
90% Email Marketing10% Other -
$1,000+$100 - $149 / hr10 - 49Seattle, WA
Ability to deliver
33.3/40.015.6/20 Reviews9.2/10 Clients & Experience8.5/10 Market PresenceService focus
80% Email Marketing20% Other -
$5,000+$100 - $149 / hr10 - 49Irvine, CA
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
40% Email Marketing60% Other -
$1,000+$100 - $149 / hr10 - 49Brooklyn, NY
Ability to deliver
32.9/40.016.4/20 Reviews10/10 Clients & Experience6.5/10 Market PresenceService focus
70% Email Marketing30% Other -
$5,000+Undisclosed10 - 49Hallandale Beach, FL
Ability to deliver
32.7/40.017.8/20 Reviews8.8/10 Clients & Experience6.1/10 Market PresenceService focus
80% Email Marketing20% Other -
$5,000+$100 - $149 / hr50 - 249Philadelphia, PA
Ability to deliver
37.7/40.018/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
30% Email Marketing70% Other -
$5,000+$150 - $199 / hr10 - 49Santa Monica, CA
Ability to deliver
31.8/40.016.2/20 Reviews10/10 Clients & Experience5.6/10 Market PresenceService focus
100% Email Marketing -
$1,000+$150 - $199 / hr2 - 9Medina, OH
Ability to deliver
35.9/40.016.8/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
45% Email Marketing55% Other -
$10,000+$100 - $149 / hr250 - 999San Diego, CA
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Email Marketing90% Other -
$1,000+$25 - $49 / hr250 - 999San Francisco, CA
Ability to deliver
39.8/40.019.8/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Email Marketing90% Other -
$5,000+$100 - $149 / hr2 - 9Tampa, FL
Ability to deliver
30.5/40.016.8/20 Reviews8.1/10 Clients & Experience5.5/10 Market PresenceService focus
80% Email Marketing20% Other -
$5,000+Undisclosed50 - 249Jackson, WY
Ability to deliver
30.4/40.017.4/20 Reviews5.8/10 Clients & Experience7.2/10 Market PresenceService focus
65% Email Marketing35% Other -
$1,000+$100 - $149 / hr50 - 249Denver, CO
Ability to deliver
30.3/40.016.2/20 Reviews8.5/10 Clients & Experience5.6/10 Market PresenceService focus
50% Email Marketing50% Other -
$5,000+$100 - $149 / hr10 - 49Brooklyn, NY
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
15% Email Marketing85% Other -
$1,000+< $25 / hr50 - 249Denver, CO
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Email Marketing90% Other -
$1,000+$25 - $49 / hr50 - 249Laguna Beach, CA
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
10% Email Marketing90% Other -
$5,000+$150 - $199 / hr10 - 49Los Angeles, CA
Ability to deliver
36.4/40.016.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
25% Email Marketing75% Other -
$1,000+$150 - $199 / hr10 - 49Iowa City, IA
Ability to deliver
38.6/40.019.6/20 Reviews9.9/10 Clients & Experience9/10 Market PresenceService focus
15% Email Marketing85% Other -
$1,000+$100 - $149 / hr10 - 49Irvine, CA
Ability to deliver
28.5/40.017.2/20 Reviews5.9/10 Clients & Experience5.4/10 Market PresenceService focus
80% Email Marketing20% Other -
$1,000+$100 - $149 / hr50 - 249Seattle, WA
Ability to deliver
37.8/40.019/20 Reviews9.4/10 Clients & Experience9.4/10 Market PresenceService focus
15% Email Marketing85% Other -
$25,000+$100 - $149 / hr10 - 49New York, NY
Ability to deliver
32.8/40.016.2/20 Reviews7.6/10 Clients & Experience9.1/10 Market PresenceService focus
40% Email Marketing60% Other -
$5,000+Undisclosed250 - 999Austin, TX
Ability to deliver
33.4/40.018/20 Reviews7.1/10 Clients & Experience8.3/10 Market PresenceService focus
20% Email Marketing80% Other -
$1,000+$50 - $99 / hr10 - 49Atlanta, GA
Ability to deliver
39.2/40.019.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% Email Marketing90% Other -
$5,000+$25 - $49 / hr10 - 49Concord, CA
Ability to deliver
27.9/40.018.2/20 Reviews3/10 Clients & Experience6.7/10 Market PresenceService focus
90% Email Marketing10% Other -
$10,000+$150 - $199 / hr10 - 49New York, NY
Ability to deliver
35.6/40.017.2/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
25% Email Marketing75% Other -
$5,000+$100 - $149 / hr50 - 249Boston, MA
Ability to deliver
34.4/40.015.8/20 Reviews10/10 Clients & Experience8.6/10 Market PresenceService focus
25% Email Marketing75% Other
United States Email Marketing FAQs
U.S.-based email marketing agencies operate in one of the world’s most sophisticated martech ecosystems, with proximity to platforms and partners like Braze (NYC), Klaviyo (Boston), Iterable (SF), and Mailchimp (Atlanta). That access often translates into certified teams, early feature adoption, and tight integrations with your broader stack (CDPs, CRMs, analytics).
A U.S. partner also brings strengths in compliance and data stewardship across CAN‑SPAM, TCPA, and state privacy laws (e.g., CCPA/CPRA). If your audience spans multiple regions or complex B2B buying cycles, local teams understand U.S. seasonality, inbox behaviors, and channel mix—helping you align email with SMS, paid, and sales outreach for measurable revenue impact.
According to Clutch’s verified pricing data, most U.S. email marketing agencies charge:
- Monthly retainers: $2,000 – $15,000+ for strategy, creative, automation, and reporting
- Hourly: $100 – $200+ depending on seniority and specialization
- Projects: $5,000 – $50,000+ for migrations, lifecycle program builds, or deliverability remediation
- Creative/production: $150 – $500 per email for copy/design (varies by volume and testing scope)
Costs depend on factors like list size, frequency, ESP/CRM complexity, segmentation depth, and experimentation (A/B, multivariate, holdouts). Take note, platform licenses (e.g., SFMC, Braze, HubSpot) and data tools are typically separate from agency fees.
Thanks to the country’s broad and diverse economic mix, many U.S.-based agencies support a wide range of sectors, such as:
- E-commerce and DTC – personalized product grids, abandoned cart flows, post‑purchase upsells
- B2B and SaaS – onboarding, PQL/MQL nurturing, webinar, and event workflows
- Healthcare and life sciences – HIPAA‑aware communications and patient education
- Financial services and fintech – compliant messaging, KYC/KYB triggers, security alerts
- Hospitality, travel, and entertainment – yield‑driven campaigns, loyalty, and geo‑based offers
- Nonprofits and education – fundraising cadences, volunteer, and alumni engagement
Look for case studies demonstrating lifecycle lifts (e.g., revenue per send, LTV, conversion), not just open rates.
Start by defining your project’s specific goals and key constraints. Then, go to Clutch to find trusted firms and evaluate them, prioritizing:
- Platform expertise — certifications in your ESP (Klaviyo, Braze, SFMC, HubSpot, Iterable)
- Deliverability — clear warm‑up plans, inbox placement diagnostics, DMARC/SPF/DKIM guidance
- Data and analytics — segmentation, experimentation design, MMM/MTA fluency, revenue attribution
- Creative and UX — mobile‑first design, accessibility, brand voice alignment, modular templates
- Compliance and security — PII handling, consent management, SOC 2/ISO familiarity
- Process and SLAs — sprint cadence, QA checklists, transparent reporting
Ask for a pilot or audit with clear success metrics before a long‑term retainer.
- Guaranteed inbox placement or “quick fixes” without list hygiene or domain warming
- Buying or scraping email lists; unclear consent practices
- Reporting only vanity metrics (opens) without click, conversion, and revenue attribution
- No plan for Apple MPP/Android privacy impacts or bot filtering
- Limited experience with your ESP or no migration playbook
- Weak QA and compliance processes; no references or anonymized case details
- Avoiding tests or refusing to set holdouts/control groups
Avoiding red flags is key to ensuring smooth collaboration. Don’t settle for a team that checks any of these traits, even if they promise exciting results or fees.