Skip to content
ToolGPA

Customer.io alternatives · Email Marketing

Alternatives to Customer.io with a one-time purchase

The Customer.io listing shows no one-time purchase. 4 of the 102 other email marketing and newsletter tools in this directory can be bought with a one-time purchase.

Customer.io is a paid product with a free trial, starting at $100 per month for up to 5,000 profiles, billed monthly. None of them has a free plan.

4 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

How each one differs from Customer.io

  1. Sendy

    Self-hosted newsletter app that sends through Amazon SES

    • Sendy starts at $69 one-time purchase, for one domain. Customer.io starts at $100 per month for up to 5,000 profiles, billed monthly.
    • Sendy is self-hostable, according to its own site.
    • Sendy can be bought with a one-time purchase.
    • Customer.io also covers business texting.
    Sendy pricing and details

  2. MailWizz

    Self-hosted email marketing software sold as a license

    • MailWizz starts at $59 per year (Regular license); lifetime license $79 once. Customer.io starts at $100 per month for up to 5,000 profiles, billed monthly.
    • MailWizz is self-hostable, according to its own site.
    • MailWizz can be bought with a one-time purchase.
    • MailWizz also covers templates.
    MailWizz pricing and details

  3. AcelleMail

    Self-hosted email marketing software sold as a one-time license

    • AcelleMail starts at $80 one-time (Regular License). Customer.io starts at $100 per month for up to 5,000 profiles, billed monthly.
    • AcelleMail is self-hostable, according to its own site.
    • AcelleMail can be bought with a one-time purchase.
    • AcelleMail also covers forms.
    AcelleMail pricing and details

  4. Interspire Email Marketer

    Self-hosted email marketing software with a one-time license

    • Interspire Email Marketer starts at $495 one-time (Self-Service License). Customer.io starts at $100 per month for up to 5,000 profiles, billed monthly.
    • Interspire Email Marketer is self-hostable, according to its own site.
    • Interspire Email Marketer can be bought with a one-time purchase.
    • Interspire Email Marketer also covers forms and a/B testing.
    Interspire Email Marketer pricing and details

Common questions

Is there an alternative to Customer.io that you buy once?

Yes. Sendy, MailWizz, AcelleMail and Interspire Email Marketer can be bought with a one-time purchase.

Can you buy Customer.io once instead of subscribing?

The Customer.io listing shows no one-time purchase. The listing was checked on Oct 17, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 17, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Customer.io: the alternatives its listing names first, then the tools that share the most features with it.