Updated 2026-01-15

Best Email Marketing Tools for Online Marketplaces

Engage buyers and sellers, automate transaction emails, and grow both sides of your marketplace.

Marketplace email marketing is uniquely complex because you serve two audiences—buyers and sellers—with different needs, different journeys, and different success metrics. Your email tool needs to handle buyer onboarding, seller activation, transaction notifications, and cross-side engagement all within one system. Here are 13 tools ranked by their ability to handle two-sided marketplace communication.

Why Online Marketplaces Need Email Marketing

Two-Sided Onboarding

Buyers and sellers need completely different onboarding experiences. Buyers need to find what they want. Sellers need to list products and optimize their profiles. Separate sequences for each side drive activation.

Transaction Lifecycle

Every transaction generates emails: order confirmation, shipping notification, delivery confirmation, review request. Automating this lifecycle is critical at scale.

Supply-Side Growth

Marketplaces live or die by supply quality. Email sequences that activate new sellers, encourage better listings, and re-engage dormant sellers directly impact marketplace health.

Demand Generation

Buyer engagement emails—new arrivals, personalized recommendations, price drops on watched items—drive repeat purchases and marketplace liquidity.

13 Best Email Marketing Tools for Online Marketplaces

Our Top Pick for Online Marketplaces
#1
Sequenzy

Email marketing with native payment integrations and event-driven automation.

Visit
Best for
Marketplaces using Stripe for payments and needing role-based automation
Pricing
$29/month for 50,000 emails

Pros

  • Native Stripe integration for transaction events
  • Event-driven automation for buyer and seller journeys
  • AI generates role-specific sequences
  • Pay per email—large user bases stay affordable

Cons

  • Newer platform
  • No built-in recommendation engine
  • No marketplace-specific templates
#2
Customer.io

Powerful event-driven messaging platform.

Visit
Best for
Funded marketplaces with complex two-sided automation
Pricing
$100/month for 5,000 profiles

Pros

  • Excellent event-driven automation
  • Complex role-based workflows
  • Multi-channel

Cons

  • Expensive
  • Complex setup
#3
Loops

Modern email with event-based automations.

Visit
Best for
Early-stage marketplaces wanting simple event-based email
Pricing
Free up to 1,000 contacts, then $49/month

Pros

  • Clean interface
  • Event-based automations

Cons

  • Per-contact pricing
  • Less powerful for complex workflows
#4
SendGrid

High-volume email infrastructure.

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Best for
Marketplaces with high-volume transactional email needs
Pricing
Free for 100 emails/day, plans from $19.95/month

Pros

  • Handles massive volumes
  • Mature infrastructure

Cons

  • Basic marketing features
  • Complex pricing
#5
Postmark

Reliable transactional email.

Visit
Best for
Marketplaces needing reliable transaction email delivery
Pricing
$15/month for 10,000 emails

Pros

  • Best deliverability
  • Fast delivery

Cons

  • Not a marketing tool
#6
ActiveCampaign

Advanced automation with CRM.

Visit
Best for
Marketplaces with dedicated seller management teams
Pricing
$29/month for 1,000 contacts

Pros

  • Powerful automation
  • CRM for seller management

Cons

  • Complex interface
  • Per-contact pricing
#7
Brevo

Affordable marketing platform.

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Best for
Pre-revenue marketplaces on a budget
Pricing
Free up to 300 emails/day, then $25/month

Pros

  • Affordable
  • Per-email pricing

Cons

  • Basic features
#8
Mailchimp

Well-known email platform.

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Best for
Marketplaces that only need a newsletter
Pricing
Free up to 500 contacts, then $13/month

Pros

  • Easy to use

Cons

  • Per-contact pricing
  • Basic automation
#9
Resend

Developer-first email API.

Visit
Best for
Marketplaces building custom email infrastructure
Pricing
Free for 3,000 emails/month, then $20/month

Pros

  • Clean API

Cons

  • No marketing automation
#10
HubSpot

Enterprise CRM and marketing.

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Best for
Enterprise B2B marketplaces
Pricing
Marketing hub from $50/month

Pros

  • Complete CRM

Cons

  • Expensive
  • Overkill
#11
ConvertKit

Creator email marketing.

Visit
Best for
Creator-focused marketplaces only
Pricing
Free up to 10,000 subscribers, then $25/month

Pros

  • Free tier

Cons

  • Not for marketplaces
#12
Userlist

SaaS email automation.

Visit
Best for
B2B marketplaces with company-level sellers
Pricing
$149/month for 5,000 users

Pros

  • Company tracking

Cons

  • Expensive
#13
Knock

Notification infrastructure.

Visit
Best for
Marketplaces needing multi-channel notification infrastructure
Pricing
Free up to 10,000 messages, then $250/month

Pros

  • Multi-channel

Cons

  • Not a marketing tool

Feature Comparison

FeatureSequenzyCustomer.ioLoopsSendGrid
Two-sided automation
Yes
Advanced
Basic
Basic
Payment integration
Native Stripe
No
No
No
Transaction volume
Good
Good
Good
Excellent
Role-based segmentation
Yes
Advanced
Yes
Basic
Starting price
$29/mo
$100/mo
$49/mo
$19.95/mo

Email Sequences Every Online Marketplace Needs

These are the essential automated email sequences that will help you grow your business and keep clients coming back.

Buyer Onboarding Sequence

Trigger: New buyer signs up

Help new buyers find what they are looking for and make their first purchase.

Immediate
Welcome to [Marketplace] — find what you need

Welcome with search tips, popular categories, and trending items.

Day 2
Top picks for you based on your interests

Personalized recommendations based on their signup interests or browsing behavior.

Day 5
How [Marketplace] protects your purchases

Trust-building email covering buyer protection, return policy, and payment security.

Seller Activation Sequence

Trigger: New seller account created

Get new sellers to create their first listing and make their first sale.

Immediate
Welcome, seller! Create your first listing

Step-by-step guide to creating a great listing. Include tips on photos, descriptions, and pricing.

Day 2
Listings that sell — tips from top sellers

Best practices from successful sellers. Specific tips that improve listing quality and conversion.

Day 7
Your first sale is closer than you think

Encouragement with data on average time to first sale. Suggest optimizations if they have listings.

Post-Purchase Review Sequence

Trigger: Order delivered

Collect reviews after delivery to build marketplace trust.

2 days after delivery
How was your purchase from [Seller]?

Simple review request with star rating and optional text. Keep it quick—one-click rating works best.

The Two-Sided Email Challenge

Marketplace email marketing is twice as complex as regular SaaS because you have two distinct audiences with opposing needs. Buyers want selection, price, and convenience. Sellers want traffic, conversion, and support. Your email sequences must serve both sides without creating confusion.

The key is rigid segmentation. Every user gets tagged as buyer, seller, or both, and every email sequence is role-specific. A seller onboarding email should never reach a buyer's inbox, and vice versa.

Supply Creates Demand

The most important email sequences for a marketplace are on the supply side. More active sellers with better listings attract more buyers, which attracts more sellers. Seller activation sequences—guiding new sellers from signup to first listing to first sale—are the highest-leverage emails you can send.

Transaction Emails Build Trust

In marketplaces, transaction emails ARE your brand. Order confirmations, shipping updates, and delivery notifications are the most-read emails you send. Make them reliable, timely, and informative. A great transaction email experience builds the trust that drives repeat purchases.

Frequently Asked Questions

Ready to grow your online marketplace practice?

Start your free trial today. Set up your first email sequence in minutes with AI-powered content generation.

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Sequenzy - Complete Pricing Guide

Pricing Model

Sequenzy uses subscriber-based pricing. You only pay for subscribers active in sequences (automations). Inactive subscribers are free to store.

All Pricing Tiers

  • 0-100 subscribers: Free (Free annually) - 3k emails/month
  • 101-1,000 subscribers: $19/month ($205/year annually) - 15k emails/month
  • 1,001-5,000 subscribers: $29/month ($313/year annually) - 60k emails/month
  • 5,001-10,000 subscribers: $49/month ($529/year annually) - 120k emails/month
  • 10,001-25,000 subscribers: $99/month ($1069/year annually) - 300k emails/month
  • 25,001-50,000 subscribers: $199/month ($2149/year annually) - 600k emails/month
  • 50,001-100,000 subscribers: $349/month ($3769/year annually) - 1.2M emails/month
  • 100,000+ subscribers: Custom pricing (Custom annually) - Unlimited emails/month

Yearly billing: All plans offer a 10% discount when billed annually.

Free Plan Features (2,500 emails/month)

  • Visual automation builder
  • Transactional email API
  • Reply tracking & team inbox
  • Goal tracking & revenue attribution
  • Dynamic segments
  • Payment integrations
  • Full REST API access
  • Custom sending domain

Paid Plan Features (1,000 - 100,000 subscribers)

  • Visual automation builder
  • Transactional email API
  • Reply tracking & team inbox
  • Goal tracking & revenue attribution
  • Dynamic segments
  • Payment integrations (Stripe, Paddle, Lemon Squeezy)
  • Full REST API access
  • Custom sending domain

Enterprise Plan Features (100,000+ subscribers)

  • Visual automation builder
  • Transactional email API
  • Reply tracking & team inbox
  • Goal tracking & revenue attribution
  • Dynamic segments
  • Payment integrations
  • Full REST API access
  • Custom sending domain

Important Pricing Notes

  • You only pay for subscribers who are active in automations/sequences
  • Storing inactive subscribers is free
  • No hidden fees - all features included in the price
  • No credit card required for free tier

Contact

  • Pricing Page: https://sequenzy.com/pricing
  • Sales: hello@sequenzy.com