What is the cheapest email marketing service?

Why 'Cheapest' Depends on Your List Size and Sending Habits

Sticker-price comparisons are misleading because email pricing models reward different business types. A $9/month plan might be a steal for a creator but a budget breaker for a SaaS team with transactional needs, and entry-tier choices compound as you scale.

For example, Brevo's volume-based pricing at $9/month for 5,000 emails makes sense for large lists with infrequent sends, while contact-based models like Sender's $10/month for up to 2,500 subscribers suit frequent senders with smaller lists. Annual billing typically provides 15-25% savings across platforms, turning already affordable options into even more cost-effective long-term solutions.

• Maildroppa offers the absolute lowest cost at $5/month for 1,000 subscribers, with a free tier for up to 100 subscribers
• Sender's free forever plan includes 2,500 contacts and 15,000 emails/month with full automation
• At 50,000 contacts, Sender's Standard plan runs approximately $159/month

This is why AI Business Sites includes two-way AI email in its $497 monthly platform—not as an add-on, but as part of the fully managed system that handles your website, CRM, content, and automations. For businesses managing customer communication at scale, this integrated approach eliminates the need to evaluate separate email services based solely on list size or send frequency.

The cheapest email marketing service depends entirely on how big your list is and how often you hit send. A plan that's a steal for a 500-contact creator can be a budget breaker for a business with 50,000 subscribers — so the "real" price tag looks different at every stage.

For tiny lists, the floor is remarkably low. Maildroppa's Premium plan costs just $5/month for 1,000 subscribers, with a free tier up to 100. Hostinger Reach goes even lower, with yearly plans starting at $2.49/month for 500 subscribers — though it's designed mainly for website owners on WordPress, WooCommerce, or Hostinger's builder.

Once your list grows past a few thousand contacts, the picture shifts. Sender's Standard plan runs $10/month for up to 2,500 subscribers, and its free tier is arguably the most generous in the category — 2,500 contacts and 15,000 emails/month with full automation. For larger lists, pricing models matter more than headline prices:

• Volume-based pricing like Brevo's $9/month Starter plan (5,000 emails) is cheapest for big lists with infrequent sends
• Contact-based pricing suits frequent senders with smaller lists
• EmailOctopus offers the most scalable paid path — 10,000 subscribers and 100,000 monthly sends for $40/month
• Some platforms are affordable only at low volume, with huge price jumps above 100k emails/month

Two more levers cut the bill further. Annual billing typically saves 15–25% across platforms — Sender, for example, gives two months free on yearly plans. And free tiers are widely available, letting you test a platform before paying anything.

The catch is that these tools only handle the sending. The real cost of email marketing compounds when you're stitching together a website, a CRM, lead capture, and follow-up automations as separate subscriptions. That's why some businesses consolidate — AI Business Sites, for instance, includes two-way AI email alongside its website, CRM, and automations in one $497/month platform, rather than treating email as another line item.

Whichever route you take, remember the economics work in your favor: businesses generate an average of $38 for every $1 spent on email marketing, so even a modest monthly tool fee is one of the highest-return line items in your budget — provided you match the pricing model to your actual list size and send frequency.

Free email marketing tiers often promise value but deliver limitations that undermine their usefulness—particularly when businesses need reliable automation and deliverability. Many free plans strip away core features or impose daily sending caps that disrupt consistent communication. The strongest free tiers balance subscriber capacity, email volume, and functional access without hidden trade-offs. For example, Sender provides 2,500 contacts and 15,000 emails per month with full automation included, making it one of the most capable free options available according to recent comparisons. Kit offers an even larger subscriber allowance at 10,000 contacts with unlimited sends, though automations were removed from its free plan in recent updates as noted in independent testing. Brevo stands out for contact capacity—supporting up to 100,000 subscribers—but limits sends to just 300 emails per day, which can hinder timely campaign execution based on platform analysis. EmailOctopus provides a middle ground with 2,500 subscribers and 10,000 emails monthly, though its free tier restricts analytics to 30-day windows per feature breakdowns. These plans allow businesses to test platforms and manage basic outreach without upfront cost, but scaling often requires upgrading.

However, not all free plans maintain their initial appeal as businesses grow. Mailchimp’s free tier has diminished significantly, now capping contacts at just 250—a sharp reduction from earlier versions that offered more generous limits per recent platform updates. Beyond subscriber limits, hidden costs can erode the perceived savings of free or low-cost tiers. Undelivered emails carry a tangible financial impact, with research showing businesses lose approximately $0.11 for every message that fails to reach the primary inbox based on industry cost analysis. Additionally, many free plans mandate visible branding in outgoing emails, which can affect professional perception and trust—particularly for service-based businesses aiming to establish credibility. These factors mean that what appears “free” may still incur indirect costs through reduced deliverability, manual workarounds, or reputational trade-offs.

For businesses using AI Business Sites, two-way AI email is included in the $497 monthly platform fee, enabling seamless communication through the CRM without relying on third-party email services as part of the managed operating system. This integration removes the need to manage separate email marketing tools for core operational messaging, such as quote follow-ups, job updates, or review requests. While dedicated email marketing platforms remain valuable for broad campaigns and list growth, having reliable, branded two-way email built into the business system ensures consistent, professional outreach without additional subscription complexity or deliverability uncertainty. This approach aligns with the broader goal of reducing software fragmentation while maintaining control over customer communication channels.

Here's the uncomfortable math: you can get email software for $5 a month, but the email itself — the writing, the design, the list — is where the real money goes. The tool is the cheapest part of running email marketing well.

Consider what the surrounding work actually costs. Most email marketing agencies charge $100–$200 per hour, and the average client spends around $2,500 per month on outsourced email management. That's fifty times the price of the software itself.

Design adds another layer. A professionally built email template runs $100–$2,000, with good design averaging $500–$1,000 per template. And that's a one-time asset you still have to update as your offers and branding change.

Then there's the list. Acquiring legitimate contacts costs $2.50–$20 per contact — meaning a modest 1,000-subscriber list can represent $2,500 to $20,000 in acquisition spend before a single email goes out. The "cheap" $5/month tool starts looking like a rounding error.

This is why the DIY tool stack quietly fails small business owners. A budget email service leaves you responsible for everything that actually drives results:

• Writing campaigns and follow-up sequences yourself, week after week
• Designing or paying for templates that match your brand
• Building and cleaning the list, one contact at a time
• Monitoring deliverability, since every email that misses the inbox costs you an estimated $0.11 in lost value
• Stitching the email tool to your CRM, forms, and website manually

The stakes are high because the payoff is real. Businesses generate an average of $38 for every $1 spent on email marketing — but only when the work actually gets done consistently. An unused $5 subscription returns exactly nothing.

That's the gap a done-for-you model is built to close. Instead of handing you another tool, a managed platform like AI Business Sites runs the email side for you: two-way AI email, a built-in CRM, automated lead follow-up, and content production, all inside a $497/month platform that also covers your website. You're not buying software and hiring the labor separately — the labor is the product.

None of this means cheap email tools are bad. For a hands-on owner with time and a small list, a $5–$10/month plan is a perfectly rational choice. The honest question isn't "what's the cheapest software?" It's "who is actually going to do the work?" If the answer is an agency at $2,500/month or you, after hours, on a job site — the software price was never the real cost. Free is only free if your time is.

How to Choose: A 4-Step Decision Framework

Choosing the right email marketing service starts with matching your pricing model to your actual send frequency and list size, as businesses with large lists but infrequent sends benefit most from volume-based pricing like Brevo’s $9/month for 5,000 emails, while frequent senders with smaller lists often find contact-based models more economical. Begin by testing any platform on a free tier—Sender offers the most generous option with 2,500 contacts and 15,000 emails per month including full automation—to validate functionality and deliverability before committing to paid plans, since undelivered emails waste money at a rate of $0.11 per message that doesn’t reach the main inbox. Always check third-party deliverability benchmarks, as performance varies significantly; for example, Sender reported 99.98% of outbound marketing emails accepted by receiving servers within 60 seconds in internal Q1 2026 monitoring, while Brevo’s tested inbox placement was 88.3% in January 2024. Finally, factor in annual billing savings, which typically provide 15-25% discounts across platforms, turning already affordable options into even more cost-effective long-term solutions. With email marketing delivering an average return of $38 for every $1 spent, optimizing your choice isn’t just about cutting costs—it’s about maximizing ROI, and for owners who want email handled as part of a complete system, booking a free strategy call explores how AI Business Sites includes two-way AI email in its $497 monthly platform to streamline your entire operation.