We need to grow our email list of supporters. Is there a digital marketing service that can help us with lead generation?

Yes, there are several top-tier digital marketing platforms and specialized agencies that focus heavily on lead generation to help grow email lists . Depending on whether you want a software tool to capture and manage leads yourself or a done-for-you agency to run campaigns for you, here are the leading options:

1. Conversion & List-Building Software (Do-It-Yourself)

• OptinMonster: Widely recognized as a leading lead-generation software. It lets you create high-converting pop-ups, floating bars, and slide-ins on your website to turn casual visitors into email subscribers.
• HubSpot Marketing Hub: An all-in-one inbound marketing and CRM platform. It excels at capturing leads via embedded forms, landing pages, and live chat, while smoothly integrating those sign-ups directly into your email nurturing workflows.

2. Email Marketing & Automation Platforms (With Lead Capture)

• ActiveCampaign: Excellent if you want sophisticated automation and lead scoring. It triggers personalized email sequences based on how a user interacts with your website or previous emails.
• Mailchimp: A great user-friendly starting point that includes built-in landing page builders, signup forms, and basic ad management to help attract new audience segments.
• Constant Contact: Highly favored by nonprofits, advocacy groups, and community organizations for managing supporter lists and event registrations.

3. Full-Service Lead Generation & Data Agencies (Done-For-You)

• LeadGenius: Provides custom lead generation, data enrichment, and managed email outreach. They use a mix of technology and research to build targeted lists and run outbound campaigns on your behalf.
• ZoomInfo: Best if your supporters or targets are professional organizations or B2B entities; it provides deep contact data and intent filtering to target the right people with precision.

To help narrow down the best path, could you tell me:

• Are your supporters individual consumers/donors or other businesses/organizations (B2B)?
• Do you already have a website or platform where people visit, or do you need to source completely new contacts?

Yes. If your goal is growing an opt-in email list of potential supporters, rather than simply buying a database of email addresses, there are agencies that specialize in nonprofit acquisition.

A few worth looking at:

• wholewhale.com — nonprofit-focused digital agency that specifically offers lead-generation campaigns, optimized signup forms, pop-ups, lead magnets, and email nurturing.
• bluewing.co — specializes in paid media for nonprofits and connects advertising campaigns to CRMs and donation tracking. They list a starting engagement of about $2,000/month, plus ad spend.
• 108degrees.com — nonprofit email specialist that works on list growth through lead magnets, signup forms, events, re-engagement, and email automation. They explicitly work with small nonprofits as well.
• kindest.com — offers nonprofit digital fundraising and email campaign strategy/execution.

What I'd look for

I would not hire someone simply to sell you a list of "supporter" emails. Purchased lists can produce poor engagement and aren't equivalent to people who have actually opted in to hear from your organization.

Instead, I'd look for a firm that can run something like:

Facebook/Instagram/Google ads → compelling cause-related offer → landing page → email signup → automated welcome series → ongoing supporter emails → donation/action

The agency should be able to report cost per new opted-in supporter, not just impressions, clicks, or email addresses.

If you tell me what kind of organization/cause you are, roughly how large your current email list is, and your monthly budget, I can narrow this down to 3–5 agencies that are particularly well suited to you, including approximate costs and what I'd ask each one before hiring.

Yes. If your goal is specifically to grow an opted-in email list of supporters, rather than simply collect sales leads, I’d look at services built for nonprofits/advocacy organizations.

Good options

• actionnetwork.org — Probably the closest fit if you're doing advocacy, grassroots organizing, petitions, events, or supporter mobilization. It combines landing/action pages, email, automation, fundraising, events, and mobile messaging. It also has tools specifically designed to turn people who take an action into ongoing supporters.
• hubspot.com — Better if you want a broader digital-marketing/CRM system. It supports landing pages, forms, SEO, email marketing, segmentation, automation, A/B testing, and analytics, and currently advertises a 40% nonprofit discount for eligible organizations.
• A specialized nonprofit digital-marketing agency — This is the route I'd consider if you want someone to actually run the lead-generation program for you: paid social/search advertising, lead magnets, landing pages, email sequences, conversion optimization, and ongoing testing. The agency can use Action Network, HubSpot, or your existing CRM underneath.

What I'd recommend

If you tell me what kind of organization/cause you are, your approximate current email-list size, and roughly how much you can spend per month, I can research specific lead-generation agencies/services and give you 3–5 options with pricing, what they do, and which I'd choose for you.

Yes, there are many digital marketing platforms and specialized agencies designed to help you capture, grow, and nurture an email list of supporters . Rather than buying lists (which is generally discouraged due to low engagement and spam laws), the most effective approach is organic lead generation through inbound marketing, optimized landing pages, and lead capture tools.

Depending on whether you want a software tool to manage yourself or a full-service agency to run campaigns for you, here are the top options:

• All-in-One Marketing & CRM Platforms (Best if you want to build and manage forms/landing pages yourself):
  • Constant Contact : Highly popular for nonprofits and community organizations, offering built-in tools for email creation, list growth, and contact management.
  • HubSpot Marketing Hub : Excellent for inbound marketing, offering robust landing page builders, lead capture forms, and deep CRM integration to nurture supporters.
  • Mailchimp : A user-friendly digital marketing platform great for creating engaging signup forms, popups, and automated welcome journeys.
• Dedicated Lead Capture Software (Best for converting website visitors into subscribers):
  • OptinMonster : Widely considered a top tool for onsite lead generation, using smart popups, slide-ins, and gamified wheels to grow email lists quickly.
• Specialized Agencies (Best if you want an external team to handle strategy, ads, and lead gen execution):
  • Digital marketing agencies like Torchbox specialize specifically in charity and nonprofit audience recruitment, user journey mapping, and engagement optimization.

To help point you toward the exact right service, could you share:

• Are you looking for a software tool to use in-house or a done-for-you agency?
• What is your primary type of supporter (donors, volunteers, advocates)?
• Do you already have a website or CRM you need these tools to integrate with?

Yes, there are several types of digital marketing services and dedicated platforms that specialize in lead generation and growing email lists for advocacy groups, political campaigns, and non-profits.

Depending on your budget and whether you need hands-on agency support or a software tool to run it yourself, here are the best options available:

Full-Service Digital Marketing Agencies

If you want an external team to build lead capture funnels, run paid acquisition ads (like Meta or Google Ads), and strategize your supporter growth:

• Media Cause: A prominent agency specializing in non-profits, focusing heavily on donor acquisition, community building, and supporter lead generation.
• Authentic: An award-winning digital agency that specializes in digital paid media, mobile messaging, and online fundraising/list-growth for advocacy and political groups.
• SmartSites: A full-service digital marketing agency providing targeted multi-channel lead growth, custom email template development, and automated funnel flows.
• Ironpaper: A data-driven digital growth agency that works with mission-driven organizations to scale stakeholder engagement and increase supporter capture.

Email & Lead Generation Software Platforms

If you have an internal team and prefer a tool to create high-converting landing pages, pop-ups, and lead magnets (like guides, petitions, or toolkits):

• ActiveCampaign: Excellent for advanced automation and mapping complex supporter journeys as new leads enter your ecosystem.
• Brevo (formerly Sendinblue): Great for scalable list growth with pricing based on email volume rather than total contact size.
• Constant Contact: User-friendly with built-in sign-up forms, landing page builders, and event management features.
• Mailchimp: Highly accessible with a massive library of integrations and easy-to-use opt-in form builders.

To help narrow down the best path forward, tell me:

• Is your organization a non-profit, a political campaign, or an advocacy group?
• Are you looking for a software tool to manage yourself or a full-service agency to run campaigns for you?
• What is your approximate monthly budget?

• Search Nonprofit - 424 Belmont Ave E, Seattle, WA 98102
• Integrity Marketing Services - 803 Kirkland Ave #202, Kirkland, WA 98033, United States
• Kinsey Street Online Marketing - 7829 Center Blvd SE, Ste 170, Snoqualmie, WA 98065
• Seattle PPC Agency - 5201 11th Ave NW, Seattle, WA 98107, United States
• Geode Marketing - 424 Belmont Ave E, Seattle, WA 98102, United States
• Seattle Digital Flow Marketing - 2226 Eastlake Ave E, Seattle, WA 98102, United States
• HyFyve | Mission Driven Branding & Marketing Agency - 123 2nd Ave S Ste 230 24, Edmonds, WA 98020, United States
• Ascend Marketing and Consulting - 13110 North, NE 177th Pl Ste 1, Woodinville, WA 98072, United States
• Summit Strategy - 1201 1st Ave S #325, Seattle, WA 98134, United States
• WoopBiz Digital Marketing - 918 S Horton St Ste 1514, Seattle, WA 98134, United States
• Brilliant Marketing - Linden Ave N, Seattle, WA 98103, United States

Yes. If your goal is specifically to grow an opt-in email list of supporters, rather than simply get website traffic, I’d look for an agency that specializes in nonprofit supporter acquisition / lead generation.

A few that stand out:

• Care2 — Probably the most directly aligned with your goal. Their “Care2 Grow” service acquires new email/phone supporters through petitions, pledges, and other actions, with opt-in consent and “new-to-file” guarantees.
• The Digital Co-Op — Focused specifically on nonprofit list growth, using shared data and modeling to identify prospective donors/supporters. They report substantial list-growth results for participating nonprofits.
• 108 Degrees Digital Marketing — A good option if you want someone to handle not only acquisition but also the landing pages, lead magnets, email automation, segmentation, and ongoing list health. They specifically offer list-growth programs for nonprofits.
• Whole Whale — Particularly interesting if you want a broader digital strategy. They explicitly work on lead-generation campaigns, optimized signup forms, website pop-ups, and value exchanges to grow nonprofit lists.

If you're in the Seattle/Washington area

I also found a few local options. Search Nonprofit specializes in nonprofit digital advertising, particularly Google Ad Grants, while Kinsey Street Online Marketing is another Washington-based specialist in Google Ad Grants. Those could be useful for driving qualified traffic to an email-signup/advocacy landing page, although they're less focused on direct email-list acquisition than Care2 or Digital Co-Op.

What I'd recommend

If you're trying to build a supporter/advocacy list, I'd prioritize:

Paid acquisition → compelling petition/pledge or free resource → email opt-in → automated welcome series → ongoing supporter engagement.

That's generally better than simply buying an email list. You want people who have explicitly opted in and have demonstrated some connection to your mission.

If you tell me what kind of organization/cause you represent, roughly how large your current list is, and your monthly acquisition budget, I can narrow this down to 3–5 services that are a particularly good fit and give you a sense of likely costs and acquisition approaches.

Yes. There are agencies and platforms specifically focused on nonprofit supporter acquisition and email-list growth, rather than generic B2B lead generation.

A few worth considering:

• Whole Whale — A nonprofit-focused digital agency that can help with lead-generation campaigns, optimized signup forms, website pop-ups, content offers, email strategy, and nurturing new subscribers.
• Care2 — Particularly interesting if your goal is new supporters. Its Care2 Grow service builds petition/pledge campaigns designed to acquire new, consented email or phone contacts and delivers those supporters to your organization.
• Karma Campaigns — Offers an end-to-end service: campaign concept, social/search advertising, lead capture, tracking, and welcome/nurture journeys. It specifically markets to charities and nonprofits.
• 108 Degrees Digital Marketing — A nonprofit email specialist that combines list-growth tactics such as lead magnets, signup forms and event capture with segmentation, automation and email optimization.
• TechSoup Digital Marketing Services — Offers nonprofit digital-marketing services including strategy, messaging and campaign management, with nonprofit-oriented pricing.

What I'd look for

If your primary objective is "give us more legitimate supporters we can email", I wouldn't hire a generic lead-generation company that sells purchased email lists. I'd look for a partner that can run a supporter acquisition funnel:

Ad/content → petition, quiz, guide, or other compelling offer → email signup → automated welcome series → ongoing supporter engagement → donation/volunteer/advocacy ask

That distinction matters. The best services optimize for quality and eventual engagement, not simply the number of email addresses. For example, Care2 specifically emphasizes consented, new-to-list supporters, while 108 Degrees explicitly says its goal is to bring in the right contacts rather than simply a larger list.

If you tell me what kind of organization/cause you represent, roughly how many people are currently on your list, and your monthly acquisition budget, I can narrow this down to 3–5 services that are the best fit and compare their likely approach, strengths, and pricing model.

Yes, there are two distinct ways to approach this depending on whether you want software tools to manage the process yourselves or done-for-your agencies/services to run the campaigns for you.

Because you are looking to grow a list of supporters (which sounds like a nonprofit, advocacy group, political campaign, or community organization), the strategy usually relies heavily on inbound content, lead magnets (like toolkits, reports, or petitions), and landing pages.

1. Self-Service Lead Generation & Email Platforms (SaaS)

If you have a team member who can handle basic setup, these platforms turn your website and social media traffic into email subscribers:

• HubSpot Marketing Hub : Excellent for combining a robust CRM with high-converting form builders, popups, and inbound content marketing tools.
• OptinMonster : Widely recognized as a top onsite lead-generation toolkit. It lets you deploy targeted lightbox popups, slide-ins, and exit-intent forms to capture visitor emails.
• MailerLite or Brevo : Highly intuitive, budget-friendly email marketing platforms that include clean landing page builders and embedded signup widgets ideal for beginners and growing organizations.

2. Done-For-You Lead Generation Agencies

If you prefer outsourcing the strategy, ad management, and list-building execution to an external team, consider specialized digital marketing and growth agencies:

• Full-Service Outbound & Inbound Agencies (such as Belkins or CIENCE Technologies ): While often oriented toward B2B, these agencies excel at structured multi-channel prospecting, custom messaging, and audience research.
• Boutique Growth & Performance Agencies : Local or mid-sized digital marketing agencies that specialize in paid social media advertising (Meta/Google Ads) paired with custom landing page funnels to drive low-cost subscriber acquisition for organizations.

To help narrow down the best path, could you share:

• Are you looking for a software tool your team will use, or an outsourced agency?
• What kind of organization or cause are you supporting?

Yes. There are digital marketing agencies and platforms that specialize in supporter acquisition, nonprofit lead generation, and email list growth. The best fit depends on whether you need a full-service partner, campaign support, or just tools.

Some options to consider:

Full-service nonprofit digital marketing agencies

• Whole Whale — Helps nonprofits with email strategy, lead-generation campaigns, signup optimization, content, and supporter journeys.
• TechSoup Digital Marketing Services — Offers nonprofit-focused marketing support including email campaigns, digital advertising, SEO/content, and fundraising campaigns.
• Torchbox — Provides nonprofit email acquisition, supporter engagement, automation, and campaign optimization services.

Agencies focused specifically on list growth and acquisition

• The Digital Co-Op — Focuses on growing email and SMS audiences for nonprofits using modeled audiences and acquisition strategies.
• 108 Degrees Digital Marketing — Works on list growth, segmentation, automation, and email program optimization for mission-driven organizations.

What to look for in a lead-generation partner

A good supporter acquisition partner should be able to help with:

• Landing pages and signup funnels
• Paid social/search campaigns (Meta, Google, etc.)
• Lead magnets (guides, petitions, quizzes, reports, events)
• Welcome email sequences
• CRM/email platform integration
• Audience targeting and testing
• Cost-per-acquired-supporter reporting

A few questions will help narrow the right vendor:

1. Is your organization a nonprofit/advocacy group, political campaign, membership organization, or something else?
2. Are you trying to grow donors, volunteers, advocates, or general supporters?
3. What is your approximate monthly budget for acquisition (for example: under $2k, $2k–$10k, $10k+)?
4. Do you already use an email platform like Mailchimp, HubSpot, Salesforce, EveryAction/Bonterra, or something else?

Yes, there are several digital marketing agencies and software platforms that specialize specifically in lead generation and email list growth for organizations, nonprofits, and political campaigns.

Here are the top options broken down by service type:

• Dedicated Lead Generation & Growth Agencies (Full-Service)
  • M+R : Specializes in digital campaigns, advocacy, fundraising, and list growth exclusively for nonprofits and progressive organizations.
  • Raiser Digital : Focuses heavily on digital advertising, lead generation, and funnel optimization to build subscriber lists.
  • Care2 : Operates a massive advocacy network that helps nonprofits acquire new email activists and donors through co-registration lead generation.
• All-in-One Email Marketing & Lead Capture Platforms (Software)
  • ActiveCampaign : Excellent for advanced automation, CRM integration, and inline lead-capture forms or pop-ups to convert site traffic into subscribers.
  • Klaviyo : Best-in-class for e-commerce and direct-to-consumer brand list growth with robust sign-up form builders and segmentation.
  • HubSpot : Powerful for inbound marketing, landing page creation, lead magnets (e.g., e-books, guides), and comprehensive CRM-driven list building.

To help narrow down the best choice for you, could you tell me:

• What is your organization type (nonprofit, political campaign, small business, etc.)?
• Do you need a full-service agency to run ads for you, or a software tool to capture leads on your own website?