Before we dive into what each provider actually does better than the rest, it’s worth repeating why email marketing services even matter in 2025.
Your email list is the durable asset in your business. Social reach can tank, ad costs can spike, algorithms can change, but your list is yours. The savviest online operators will tell you—without hedging—that “it’s all about the list.” They’re right.
Industry studies continue to show email sitting at (or near) the top of the ROI pile—roughly $40+ in revenue for every $1 spent, depending on the industry and list quality. That’s absurdly good compared to almost any other channel.
So yeah—worth investing in.
And email isn’t just about blasting promos. It’s how you nurture people after they download a lead magnet, how you onboard new buyers, how you bring back abandoned carts, and how you stay top-of-mind without paying for attention every single time.
If you’re a finance pro, you can send gated guides on boosting credit or getting approved for loans.
If you run ecommerce, you can push time-sensitive coupons, seasonal drops, and VIP-only promos.
If you sell courses or memberships, you can survey your audience, pre-sell upcoming lessons, and segment buyers from prospects automatically.
But you can’t do any of that reliably from personal inboxes like Gmail or Outlook—bulk marketing from those violates their terms and gets you suspended fast if a few people hit spam.
Dedicated email service providers (ESPs) solve all of that. They give you drag-and-drop email builders, landing pages, list growth tools, automations, deliverability protection, analytics, and in many cases SMS and basic CRM features—so your emails actually land in the inbox.
The Top 6 Best Email Marketing Services in 2025
- Constant Contact – Best email marketing service for most
- MailerLite – Best for beginners
- Omnisend – Best for boosting ecommerce with shoppable emails
- AWeber – Best for agencies with advanced marketing campaigns
- Brevo (formerly Sendinblue) – Best for getting unlimited contacts and emails without upgrading
- HubSpot – Best for merging your CRM with email marketing
In-Depth Reviews of Each of Our Top Picks
#1 – Constant Contact — Best for Most Businesses
Constant Contact
Best for Most
Take care of email marketing with one of the most recognizable names in the category, Constant Contact. Start building a list and lean on the platform's solid reporting and analytics to get your campaigns to the next level.
Overall: 4.3/5
Constant Contact is still the safest default for small and midsize businesses that just want email to “work” without hiring someone to set it all up. It nails the basics—list building, sending attractive emails, handling bulk sends, and giving you reporting that’s actually readable.
Onboarding is genuinely fast: import contacts, verify your sending email, pick a template, send. If you don’t even have a site yet, their simple website/store builder plus landing pages make it possible to grow a list from zero.
- Price: 5/5
- Ease of Use: 4.5/5
- Deliverability Safeguards: 3.5/5
- Templates: 4/5
- Marketing Automation: 4/5
- Tracking and Analytics: 4.7/5
Price: 5/5 – the entry plan starting around $12/month for up to 500 contacts (billed monthly) is very competitive, especially because it now folds in extras like social posting, SMS, and the site/store builder. Nonprofits can still shave off 20–30% if they prepay.
There’s no forever-free plan, but the 60-day trial is enough to run a real campaign and see your metrics.
Ease of Use: 4.5/5 – the UI has gotten clearer, and the subject-line generator and stock photo library (via Shutterstock) save actual time. You can go from idea → draft → send without touching a design tool.
The only real UX gripe is still their navigation bucket called “Campaigns,” which hides landing pages, social tools, and ads under one roof—so new users sometimes don’t realize Landing Pages live there.
Biggest annoyance: you still have to call to cancel, and support hours are U.S.-centric. If you’re overseas or work nights, that’s a pain.
Deliverability Safeguards: 3.5/5 – double opt-in is there, captchas can be auto-applied on suspicious activity, and you can keep your list cleaner. But real-time in-app DNS/DKIM/SPF guidance is lighter than what other tools give, so you may have to Google a step or two.
Templates: 4/5 – you get hundreds of email templates, landing pages for lead gen and shoppable pages, and a simple editor. Some templates look dated, but you can make good enough emails fast. Forms are the weakest part and basic styling often needs CSS.
Marketing Automation: 4/5 – the starter plan is mostly “welcome-email-only,” so if you actually want multistep journeys, cart nurture, or lead nurturing sequences, move to the higher tier. Once you do, the workflow builder is one of the more straightforward ones.
Tracking and Analytics: 4.7/5 – this is where Constant Contact punches above its weight. Clear reporting, trends over time, desktop vs. mobile opens, and subject line split tests all help you tweak fast. They only miss fancy stuff like heatmaps and super-detailed geo.
Bottom line: if you want the least risky, most predictable email tool and don’t mind calling to cancel, Constant Contact is the realistic pick.
#2 – MailerLite — Best for Beginners
MailerLite
Best for Beginners
Looking for an affordable and powerful way to connect with your customers? MailerLite is more than enough, whether you’re just getting started with email marketing or have more specific, mature needs. It's simple enough to learn quickly and full of helpful templates, powerful automations, and robust tracking.
Overall: 4.2/5
MailerLite is the “I don’t want to fight my software” option. Cheapest starter pricing, real automations even at low tiers, good-looking email and landing page templates, and an actually-good free plan.
- Price: 5/5
- Ease of Use: 4/5
- Deliverability Safeguards: 3/5
- Templates: 4.5/5
- Marketing Automation: 4.5/5
- Tracking and Analytics: 4/5
Price: 5/5 – the $10–$12/month area for 1,000 contacts and unlimited emails is hard to beat, and you can stay on the free plan (1,000 contacts, 12,000 emails/month) longer than with most competitors.
Ease of Use: 4/5 – they actually show you what to do. Guided tours, in-app tips, live chat in-app, and clean navigation. Cancellation is online and instant, no begging.
Deliverability Safeguards: 3/5 – you get DKIM/SPF guidance, captchas, and client-level reporting to spot issues. What’s missing is proactive typo/misspelling catching and hard domain-blocking on forms.
Templates: 4.5/5 – tons of modern, mobile-friendly templates for emails, landing pages, and popups. Even the popup templates are solid, which most tools half-bake.
Marketing Automation: 4.5/5 – this is the sneaky reason MailerLite beats bigger names: you get real workflows, behavior-based triggers, resends to non-openers, time-zone sends, and dynamic content without jumping to an enterprise tier.
Tracking and Analytics: 4/5 – A/B testing for subject lines and content, heatmaps, geo, device-level stats—way more than you’d expect for the price.
Bottom line: if you’re starting fresh in 2025 and don’t want to overspend, MailerLite is the obvious pick.
#3 – Omnisend — Best for Boosting Ecommerce with Shoppable Emails
Omnisend
Best for Ecommerce
Online stores have specific needs and goals for email marketing. What better way to level up your campaigns than by embedding products into your emails so customers can make a purchase within them? Unlock the power of shoppable emails with Omnisend.
Overall: 3.4/5
Omnisend is built for stores. If you’re on Shopify, WooCommerce, BigCommerce, or similar and you want one system to do email + SMS + push with product blocks right inside your emails, this is the one.
- Price: 4/5
- Ease of Use: 4.5/5
- Deliverability Safeguards: 2/5
- Templates: 3/5
- Marketing Automation: 4.5/5
- Tracking and Analytics: 2.5/5
Why it’s different: you can literally drop products from your store into emails and run “shoppable emails” in minutes. That’s pure revenue behavior.
Weak spots: landing pages are basic, and deliverability protections aren’t as deep as others. If you get hit with bots, you’ll feel it.
Bottom line: stores first, everyone else second. If you sell stuff online, Omnisend gives you the ecommerce-focused playbook the generalist tools don’t.
#4 – AWeber — Best for Agencies with Advanced Marketing Campaigns
AWeber
Best for Advanced Campaigns
Manage an unlimited number of lists across an unlimited number of businesses all within the same account. You can connect all of your websites, manage everything in one place, and set up numerous sent-from emails to ensure you’re always on-brand.
Overall: 3.3/5
AWeber is the old-school powerhouse that agencies and freelancers still use because it lets you run lots of brands, lots of lists, and lots of automations from one account without nickel-and-diming you per user.
You get excellent split testing (better than most modern tools), strong domain blocking, and powerful multi-step automations that are actually affordable.
Downsides? The UI isn’t as clean, some templates are dated, and the form builder can be janky. But if you manage multiple client lists, this is still a workhorse.
#5 – Brevo (formerly Sendinblue)— Best for Getting Unlimited Contacts and Emails
Brevo (formerly Sendinblue)
Best for Unlimited Contacts
Never worry about exceeding your allotted list size or monthly email send limit again. With Brevo, all plans accommodate as many of either as you need. That generosity is further enhanced by an easy-to-learn interface and solid automation features.
Overall: 2.9/5
Brevo is the answer to “I have a big list and I refuse to pay 4 figures a year just to store it.” Unlimited contacts on every plan is the hook.
Entry pricing sits a bit above average, and you don’t get landing pages until you move up, but you do get solid automations, stock images, SMS, and easy list-cleaning tools.
Where they’re clearly behind is analytics on the base plan. If you want heatmaps, split tests, and geo/device data, you’ll pay extra.
Bottom line: pick Brevo if contact limits from other providers are what’s killing you.
#6 – HubSpot — Best for Merging Your CRM with Email Marketing
HubSpot
Best for Combining Email & CRM
Hubspot's intuitive drag and drop email builder, dozens of free templates, and the world's leading CRM solution come together into a powerful email marketing platform. Gain more insight into your list by tapping into HubSpot's CRM capabilities and watch your campaigns soar.
Overall: 2.3/5
HubSpot is not the cheapest email platform on this list—at all. But if your sales team lives in HubSpot CRM and you want marketing emails, forms, landing pages, and contact records all in one place, it’s the cleanest way to do it.
You get excellent built-in form validation, domain blocking, and list segmentation. You also get truly good landing page templates. Where the starter tier lags is deeper workflows and advanced reporting—you have to upgrade for the “real” marketing automation.
Bottom line: don’t pick HubSpot because it’s an amazing standalone email tool—pick it because you want your CRM and email to be one system.
