Email marketing

15 services

Email marketing tools manage subscriber lists and send newsletters, campaigns and automated sequences, with sign-up forms, unsubscribe handling and open and click reports. MailerLite, EmailOctopus, Sender and Sendpulse are campaign tools; Buttondown and Substack are built around writing a newsletter; Brevo and Mailjet combine campaigns with transactional sending.

Plans cap both subscribers and sends, and the subscriber cap usually binds first. EmailOctopus and Sender each allow 2,500 subscribers, with 10,000 and 15,000 emails a month; MailerLite allows 1,000 subscribers and 12,000 emails; Sendpulse 500 subscribers; Buttondown and Maildroppa 100. Substack places no limit on subscribers but takes a share of paid subscriptions.

Free plans usually keep the provider's branding in the footer and may limit automations or templates. Deliverability depends on authenticating your sending domain with SPF, DKIM and DMARC, so plan for DNS changes. Importing a purchased or scraped list breaks most providers' terms and can get the account closed.

15 services

Anypost

Email API for transactional and bulk sends.

3,000 emails/mo

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Brevo

Email platform covering transactional sends over API or SMTP plus marketing campaigns and contact lists.

9,000 emails/mo

300 emails/day

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Buttondown

Newsletter platform for writing, sending and managing an email subscriber list.

100 subscribers

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EmailOctopus

Newsletter and campaign tool for sending to subscriber lists.

10,000 emails/mo

2,500 subscribers

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Engage

Customer messaging and automation for SaaS: email, push, SMS, in-app tours and banners.

1,000 active users/mo

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Maildroppa

Newsletter tool for building a subscriber list and running automated sequences.

100 subscribers

Unlimited emails

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MailerLite

Campaign and newsletter platform with subscriber lists and sending.

12,000 emails/mo

1,000 subscribers

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Mailjet

Email delivery platform for transactional messages and marketing sends.

6,000 emails/mo

200 emails/day

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Sender

Newsletter and campaign tool for mailing a subscriber base.

15,000 emails/mo

2,500 subscribers

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Sendpulse

Marketing email platform for campaigns sent to subscriber lists.

15,000 emails/mo

500 subscribers

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Substack

Newsletter publishing platform where writers post issues and optionally charge readers.

Unlimited subscribers

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Unitpost

Email sending API for transactional and marketing mail, with SDKs and an MCP server.

  • No card

5,000 emails/mo

200 emails/day, 10,000 contacts, 5 domains

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Waitlio

Waitlist pages for launches that gather and verify signups, with tagging and stats.

100 subscribers/mo

1 waitlist, API access

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Enchant

Customer messaging suite with a chat widget, newsletters and a link-in-bio page.

Limits not listed

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Zoho Campaigns

Email marketing tool for newsletters, campaigns and mailing lists.

Limits not listed

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