Best Portland Email Marketing Company Rankings

5 Companies - Rankings updated: April 01, 2026

DesignRush evaluates each agency using expert assessment and client feedback to inform your choices. Some featured agencies have paid placements.

United States × Maine × Portland ×
  • For all of your lead generation, sales outsourcing, and marketing needs.

    We are an outsourced Sales & Marketing team specializing in: Digital Marketing, Content Development & Branding, Lead Generation & Outsourced Sales.  [... view The Endurance Group profile ]
    Location
    Portland, Maine
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr

    The Endurance Group Services

    • AI Development
    • Email Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    The Endurance Group Reviews & Testimonials

    • TJ Doherty
      TJ Doherty Review from Google
      5.0

      TJ Doherty's Review Sourced from Google

      Working with Connor was a 10 out of 10. He was able to fix some glitches on our website and incorporate a personal AI assistant to help answer customers questions. Often times landscape customers have questions that can now get answered in real time using the AI assistant so I can focus on growing and running the business

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    • Sevag Sarkissian
      Sevag Sarkissian Review from Google
      5.0

      Sevag Sarkissian's Review Sourced from Google

      Working with The Endurance Group on our HubSpot implementation was absolutely amazing! They seamlessly transferred all our data from the former CRM and set up super-efficient workflows that have saved us a ton of time. The custom reports and dashboards they created give us such clear insights into our data, it’s really helping us make smarter decisions. They introduced a new LinkedIn outreach solution that has been a fantastic addition to our prospecting strategy. TEG totally exceeded our expectations—seriously, we highly recommend them!

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    • Michael Gazzano
      Michael Gazzano Review from Google
      5.0

      Michael Gazzano's Review Sourced from Google

      The Endurance Group was instrumental in helping me create an AI that knows the US tax code inside and out, providing an invaluable reference tool for tax professionals. They also offered insightful business advice on how to scale our AI solution effectively. Thanks to TEG, we now have a powerful tool that enhances our service offerings and a clear strategy for growth. I highly recommend The Endurance Group for their exceptional technical and business acumen.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Cressent
    • Vivid Cloud
    • Cafeto
    Data sourced from the agency's DesignRush profile
  • Our marketing services help small businesses grow.

    We are a small business working with small businesses. Our focus is on what matters most to small businesses: a return on investment, relationships, and customers.  [... view Fisher Green Creative profile ]
    Location
    Portland, Maine
    Number of Employees
    Under 49
    Average Hourly Rate
    $85/hr
    Minimal Budget
    Under $1,000

    Fisher Green Creative Services

    • Digital Marketing
    • Social Media Marketing
    • SEO
    • Email Marketing
    • Web Development
    • Web Design
    • eCommerce Development
    • Logo Design
    • Branding
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Breakwater Dental
    • EASY A-C SCREEN
    • Frost Farms
    • Singing Pastures
    Data sourced from the agency's DesignRush profile
  • Data-Driven Digital Marketing & Conversion Optimization.

    KPI Convert is a full service digital marketing agency comprised of savvy marketers, innovative creatives and data junkies.  [... view KPI Convert Digital Marketing profile ]
    Location
    Portland, Maine
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr

    KPI Convert Digital Marketing Services

    • Digital Marketing
    • Social Media Marketing
    • PPC
    • Email Marketing
    • Web Development
    • SEO
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • ZipLine
    • DMM
    • Voloom
    Data sourced from the agency's DesignRush profile
  • Navigate with confidence

    Sonar Digital offers clients a new approach to digital marketing, advertising, SEO and analytics.  [... view Sonar Digital profile ]
    Location
    Portland, Maine
    Number of Employees
    Under 49
    Average Hourly Rate
    $75/hr

    Sonar Digital Services

    • SEO
    • Social Media Marketing
    • PPC
    • Advertising
    • Digital Marketing
    • CRM Consulting
    • Email Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Sonar Digital Reviews & Testimonials

    • Taylor Massey
      Taylor Massey Review from Google
      5.0

      Taylor Massey's Review Sourced from Google

      Chris and his team at Sonar Digital offered me fantastic insight for marketing for my small architecture firm. Their breakdown of SEO and webflow management strategies was exactly what I needed. I highly recommend their services to any size company looking to generate more leads!

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    • Derek Bissonnette
      Derek Bissonnette Review from Google
      5.0

      Derek Bissonnette's Review Sourced from Google

      Sonar has been a pleasure to work with. We have started implementing their recommendations and looking forward to reaping the rewards. They have fulfilled all that was agreed upon ahead of deadline and simply great humans! Highly recommend

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    • Paul Durfee
      Paul Durfee Review from Google
      5.0

      Paul Durfee's Review Sourced from Google

      Sonar Digital is an outstanding marketing partner! Their team is knowledgeable, responsive, and invested in our business' success. They took the time to understand my business and create digital strategies that deliver real results. From SEO to digital advertising, their expertise is top-notch. If you're looking for a creative, data-driven agency in Portland, ME, Sonar Digital is the way to go. Highly recommend!

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    Reviews verified by DesignRush and sourced from the agency's profile
    • American Rhino
    • Strimo
    • MaineHealth
    Data sourced from the agency's DesignRush profile
  • Transforming Businesses With Results-Driven Digital Marketing

    We provide local SEO services to help your business stand out and attract more customers in your area. Empowering businesses of all sizes with flexible, month-to-month marketing solutions that deliver measurable results.  [... view Bold Coast Marketing Group profile ]
    Location
    Portland, Maine
    Number of Employees
    Under 49
    Average Hourly Rate
    $80/hr
    Minimal Budget
    Under $1,000

    Bold Coast Marketing Group Services

    • Digital Marketing
    • SEO
    • Web Design
    • Social Media Marketing
    • PPC
    • UI/UX Design
    • Content Marketing
    • Email Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Bold Coast Marketing Group Reviews & Testimonials

    • Cynthia Hill
      Cynthia Hill Review from Google
      5.0

      Cynthia Hill's Review Sourced from Google

      I was struggling to get my business off page 2 of Google. Within a month of matt performing SEO my site was ranking #3 for competitive keywords. Such a useful service that pays for itself.

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    • Phillip Heisser
      Phillip Heisser Review from Google
      5.0

      Phillip Heisser's Review Sourced from Google

      Honestly, I don’t know where to start. These guys are amazing people and the do amazing work! Any questions I had they were there to answer in a timely fashion. Their personality is also great. I couldn’t ask for a better company!

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    • Al Moncada
      Al Moncada Review from Google
      5.0

      Al Moncada's Review Sourced from Google

      I been with Matt since June of 2018, in just this few months, I can see my results. you can call him and get thing done, nothing like dealing with a local and someone that’s will to work for you. I will strongly recommend him and stay with him.

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    Reviews verified by DesignRush and sourced from the agency's profile
    • Legal Industry
    • Construction Industry
    • Home & Garden Industry
    Data sourced from the agency's DesignRush profile

Frequently Asked Questions

What services do email marketing agencies provide?

They offer a suite of services that help businesses engage audiences, drive conversions, and measure email marketing campaign performance.

  • Email marketing strategy and planning: Developing end-to-end email strategies, from audience targeting and segmentation to campaign calendars and lifecycle planning (e.g., welcome series, promotional campaigns, re-engagement flows)
  • Email campaign creation and management: Designing email templates, writing copy and subject lines, and setting up campaigns with proper personalization. According to Litmus, newsletters remain one of the most common email types, used by about 68% of marketing teams in email programs, making it a staple service for many email marketing firms.
  • Marketing automation: Around 50-71% of businesses use drip sequences, triggers, and customer journeys. Email marketing firms help set up and optimize these workflows for better engagement and efficiency.
  • List growth and segmentation: Splitting lists by behavior, purchase history, or demographics is critical for relevance. Segmented campaigns can generate up to 760% more revenue than non-segmented campaigns, according to NPD Group.  
  • Deliverability and inbox optimization: Monitoring sender reputation, spam filters, and domain authentication (e.g., SPF, DKIM) to improve inbox placement, by reducing bounce rates and helping more emails actually reach subscribers.
  • A/B testing: Running A/B tests on subject lines, content blocks, layout, and send timing to boost engagement metrics like open rates, CTR, and conversions. Agencies test multiple email template variations through A/B testing.
  • Analytics and reporting: Providing dashboards and insights on open rates, click-through rates (CTR), conversion rates, and revenue attribution help clients measure ROI and refine future campaigns. 

When should I hire this agency?

Hire an email marketing agency when your internal efforts aren't delivering the results you need, and you need to boost performance, save time, and improve ROI. Many small business owners begin with a free plan and basic campaigns, but hire an agency once email becomes a core revenue channel. 

More specifically, you should hire an email marketing firm when:

  • Your key email metrics, such as open rates, are significantly below 30-40%, or your click rates are under 2%.
  • ROI from email is lower than expected compared with channel standards; the average ROI is around 3600-3800% (about $36-$38 return for every $1 spent).
  • The internal team is stretched thin or inexperienced.
  • You lack advanced capabilities like email marketing automation, segmentation, or personalization.
  • You're currently using a free plan from your email platform, and you've hit subscriber limits, maxed out monthly send caps, and lack advanced automation features.
  • You want measurable revenue growth.

How much do email marketing companies charge for their services?

The cost varies widely, depending on experience level, services included, list size, and campaign complexity. Email marketing firms usually charge $15 to $300 per hour, depending on the agency's expertise and location.

  • Basic to mid-level agency: $1,000-$3,000/month for smaller businesses or limited campaigns.
  • Standard full-service range: $2,500-$10,000+/month for ongoing work, including strategy, email automation, and reporting.
  • Specialized email marketing services: $1,500-$3,000/month for 2-3 campaigns or $5,000- $15,000/month for enterprise-level management.
  • High-end retainers can exceed $10,000/month when they include advanced segmentation, data integrations, or multi-channel automation.

Per Email or Per Project

  • Per email: Roughly $250-$700 per campaign/email created.
  • Per project: Starting around $1,000+ for a defined one-time engagement.

While free plans allow businesses to start email marketing at no cost, they typically limit the number of contacts, automation, and advanced analytics. Agencies, by contrast, focus on revenue optimization, making them a growth investment rather than a cost.

What should I look for when hiring an agency?

When choosing an email marketing firm, focus on measurable performance, strategic capability, and transparency. Here are the key criteria to consider:

  • Demonstrated performance results
    Top email marketing agencies will show measurable outcomes, so look for case studies that include revenue lifts, conversion improvements, or ROI figures. Email marketing typically delivers $36 in revenue for every $1 spent, so agencies should tie results to actual financial impact.
  • Baseline benchmarks and gap analysis
    Email marketing companies should compare your performance to current benchmarks and explain how they plan to improve your metrics.
  • Segmentation and personalization expertise
    Segmented campaigns can see up to 760% more revenue than non-segmented ones, and personalized subject lines can boost open rates significantly. Look for clear segmentation strategies aligned with buyer behavior.
  • Automation and lifecycle strategy
    Automated flows such as welcome series, cart abandonment, and post-purchase messaging are proven winners: automated email campaigns often outperform basic sends with higher opens and conversions. Choose an agency that builds and optimizes automation workflows. 
  • Data-driven measurement and reporting
    A B2B email marketing agency should establish KPIs, including conversion rate, revenue per recipient, and list growth, and report them regularly. Avoid vendors that focus only on vanity metrics like opens without linking to business outcomes. 
  • Testing and optimization process
    Continuous A/B testing should be part of their execution plan, as it's essential for growth over time. 
  • Technical and platform expertise
    Ensure the agency knows your email platform, be it Constant Contact, Klaviyo, Mailchimp, or HubSpot, and fundamentals like deliverability, authentication, compliance, and list hygiene.
  • Transparent scope and pricing
    Know what email marketing services are included and what costs extra before you sign. Clear deliverables, timelines, and reporting expectations avoid surprises later.

What factors affect an email marketing firm’s pricing?

Email marketing company prices are influenced primarily by:

  • List size and email volume
  • Email marketing service and automation complexity
  • Agency experience and reputation
  • Frequency of campaigns
  • Email marketing tools and integrations used
  • Billing model and team composition

If a business is still operating on a free plan, agency costs may initially include email marketing platform migration, list restructuring, or automation setup, which can increase onboarding pricing.

By understanding these factors, businesses can better compare proposals and choose an agency whose pricing matches the value and outcomes they expect.

About The Author and Expert Reviewer

Vanessa Maandal is a digital writer with expertise in content marketing and creative direction. She has developed successful campaigns for global brands, such as Boehringer Ingelheim, Kellogs Singapore, and Friesland Campina. At DesignRush, she writes content focused on marketing strategies led by award-winning agencies to connect them with like-minded organizations and individuals.

Head of Email Marketing

Ildiko Szabo built her marketing experience by working at ROSEYs and Cootbie, managing email campaigns, newsletters, and podcasts. She is fluent in five languages and holds a master’s degree in business administration, management, and operations. As the current Head of Email Marketing at DesignRush, she increased email open rates from 14% to 55%.