Oracle Eloqua

Short answer: the brands people actually use most are HubSpot, Mailchimp, Klaviyo, Salesforce Marketing Cloud / Account Engagement, Adobe Marketo Engage, ActiveCampaign, Braze, Iterable, Oracle Eloqua, and Brevo. If you want the safest default: HubSpot for B2B/CRM-led marketing, Klaviyo for ecommerce, Mailchimp for simple SMB email + automations, Marketo or Salesforce for enterprise B2B, and Braze/Iterable for high-volume B2C lifecycle marketing.

I’d shortlist these:

My practical recommendation by use case

• Best overall for most B2B companies: HubSpot Marketing Hub
• Best for Salesforce-first B2B teams: Salesforce Marketing Cloud Account Engagement
• Best for advanced enterprise B2B: Adobe Marketo Engage
• Best for ecommerce / Shopify: Klaviyo
• Best simple email + automation for small business: Mailchimp
• Best SMB automation power/value: ActiveCampaign
• Best for consumer apps / mobile lifecycle: Braze or Iterable
• Best lower-cost alternative: Brevo
• Best enterprise legacy/global ops option: Oracle Eloqua

If you’re buying for a real company, don’t choose by “best overall” alone. Choose based on CRM fit, ecommerce platform, database size, channels needed, reporting/attribution needs, and who will actually administer it. For most teams, the wrong platform is usually not “missing features” — it’s buying something too complex for the team or poorly integrated with the CRM.

HubSpot Marketing Hub, ActiveCampaign, Klaviyo, Mailchimp, Adobe Marketo Engage, and Salesforce Marketing Cloud (including Account Engagement, formerly Pardot) stand out as the top marketing automation software that people and companies actually use widely.

These recommendations draw from user review volume and ratings on platforms like G2, real-world market share/usage data (e.g., from 6sense tech stack tracking), expert roundups, and analyst recognition (such as Gartner Magic Quadrants for B2B marketing automation). Popularity varies by business size, focus (B2B vs. B2C/e-commerce), and needs—there is no single “best” tool.

Top Recommendations by Popularity and Use Case

Here are the leading options people actually adopt, grouped roughly by strength:

1. HubSpot Marketing Hub (Often the overall leader in reviews, all-in-one adoption, and B2B recognition)
   Extremely popular with high G2 review counts (around 14,000+). It combines marketing automation (email, workflows, lead scoring/nurturing, landing pages, SEO/content tools) with a strong free/built-in CRM, sales, and service hubs. Excellent for inbound marketing, mid-market to enterprise teams wanting one platform, and ease of use with solid integrations and AI features. Frequently named a Leader in Gartner Magic Quadrants. Pricing starts relatively accessible (free tools available; paid from low tens of dollars/month scaling up) but can get expensive at scale. Ideal if you want CRM + marketing tightly integrated.

2. ActiveCampaign (Top for advanced automation and SMBs/growing businesses)
   Near-equal high G2 review volume to HubSpot and frequently praised (or ranked #1 overall) in independent reviews for powerful visual workflow builders, segmentation, email personalization, CRM/sales features, and AI/predictive capabilities. Used by 150,000+ businesses; strong deliverability and value. More automation-focused and often more affordable long-term than HubSpot for pure marketing needs. Great starting point or upgrade from basic email tools. Pricing from around $15/month.

3. Klaviyo (Dominant for e-commerce)
   Very high real-world usage/market share (hundreds of thousands of customers). Excels at email + SMS automation with deep Shopify/WooCommerce and other e-com integrations, predictive analytics, segmentation based on purchase behavior, and prebuilt flows (e.g., abandoned cart). Highly rated on G2 for e-commerce teams. Starts around $20/month (based on profiles/emails). Top choice for DTC and online retailers.

4. Mailchimp (Intuit Mailchimp) (Most widely used overall, especially entry-level/SMBs)
   Highest market share by a large margin in broad usage tracking (hundreds of thousands of customers), thanks to its ease of use, free tier, templates, and growing automation/AI features. Good for email-centric campaigns, basic-to-intermediate automation, audiences, and landing pages. Less powerful for complex multi-step journeys or enterprise needs compared to the above, but many start here and stick with or grow into its All-in-One platform. Very beginner-friendly.

5. Adobe Marketo Engage (Enterprise B2B powerhouse)
   Longstanding leader for complex B2B demand generation, lead management, account-based marketing (ABM), sophisticated nurturing, and analytics. Strong Gartner recognition as a Leader. Deep Salesforce and other CRM integrations; highly configurable but steeper learning curve and higher cost (enterprise pricing, often custom). Used by larger organizations needing scale and governance.

6. Salesforce Marketing Cloud / Account Engagement (Pardot)
   Strong for companies already in the Salesforce ecosystem. Marketing Cloud handles broad omnichannel (email, mobile, ads, journeys) especially well for B2C/high-volume; Account Engagement focuses on B2B lead nurturing and alignment with Salesforce CRM. High enterprise adoption and Gartner Leader status. Seamless data/CRM sync is a major plus; pricing is enterprise-level.

Other Strong Contenders People Use

• Braze — Excellent for real-time omnichannel/lifecycle messaging (email, push, in-app, SMS), popular with consumer brands and mobile-first companies. High G2 ratings.
• Omnisend or Attentive — Strong e-commerce/SMS-focused options (Omnisend often praised for value and Shopify integration).
• Brevo (formerly Sendinblue), HighLevel, Customer.io, MailerLite — Affordable or specialized alternatives (agencies, budget, behavioral messaging).
• Others like Oracle Eloqua or Creatio appear in enterprise/Gartner contexts.

Quick Guidance on Choosing

• Small businesses / startups / simple needs: Mailchimp or ActiveCampaign (or Brevo for budget). Many start with free/low-cost tiers.
• Growing / mid-market / all-in-one: HubSpot or ActiveCampaign.
• E-commerce/DTC: Klaviyo (or Omnisend).
• Enterprise B2B / complex nurturing/ABM: Marketo or Salesforce Account Engagement.
• Omnichannel/consumer engagement at scale: Braze or Salesforce Marketing Cloud.
• Key factors: Ease of use vs. power, existing CRM/stack (especially Salesforce), pricing (many scale with contacts/emails and add-ons), integrations, AI features, reporting, and support. Test free trials/demos—usability and implementation time matter a lot. Total cost of ownership (including training) often exceeds sticker price for complex tools.

Market notes: Usage data shows email-heavy tools like Mailchimp and Klaviyo leading in sheer customer numbers (many smaller companies), while HubSpot and ActiveCampaign dominate review volume and mid-market mindshare. Enterprise tools like Marketo/Salesforce have fewer total customers but high value/revenue share. The category is growing with AI personalization, omnichannel journeys, and tighter CRM/revenue alignment.

Check recent G2/Capterra grids, Gartner Peer Insights, or vendor sites for the latest pricing, feature comparisons, and user reviews tailored to your industry/size. Needs evolve, so many companies switch or layer tools as they scale.