A Mailchimp Alternative for WordPress

1 November 2026 · 7 min read

If you run a WordPress site and send a newsletter, you have probably wondered whether you need a separate email service at all. This post looks at one Mailchimp alternative for WordPress: Optcatch, a free plugin that builds your list from the forms already on your site and sends campaigns through email accounts you already have. It is not the right choice for everyone, so we will also cover where Mailchimp is the stronger option.

Disclosure: this post is published by the makers of Optcatch. We have tried to keep the comparison fair, and we point out the trade-offs of our approach.

Why people look for a Mailchimp alternative

The usual reasons are cost and control.

Cost. Hosted email platforms like Mailchimp price their plans in tiers, mostly by the number of contacts you store and the features you need. As your list grows, your plan usually grows with it. Pricing changes from time to time, so check Mailchimp's current pricing page rather than relying on numbers in a blog post (including this one).

Data location. With a hosted service, your contact list lives on the provider's platform. You can export it, but the day-to-day copy is on their servers, under their terms.

Connecting forms. Getting leads from a WordPress form into an external service usually means an integration plugin, an embed code, or a tool like Zapier in between.

If none of these bother you, Mailchimp may be fine as it is. If they do, a WordPress-based tool is worth a look.

What Optcatch does

Optcatch is a WordPress plugin that keeps the list, the consent records and the campaigns inside your WordPress site. Once installed, it appears in the admin menu as Optcatch.

Lead capture from the forms you already have

Universal auto-detect is on by default, so any form on your site with an email field is captured (login, password, search and payment forms are ignored). Contact Form 7, WPForms, Elementor Pro Forms, Gravity Forms, Fluent Forms and Ninja Forms are also captured server-side, with the form name recorded as the contact's source, and WooCommerce customers can opt in at checkout. If a form already has its own marketing opt-in, add the class lcc-consent to it; the capture forms guide has the details.

A consent record for every contact

For each contact, the plugin stores the consent basis, the version of the consent wording and a timestamp, and every send is checked against that record, with unsubscribed contacts always excluded. Whether your use is legally compliant still depends on your own legal basis and privacy policy, so see what is stored for each contact and decide accordingly.

Campaigns, templates and segments

• A campaign builder for branded newsletters with header, buttons, social links and simple formatting.
• Six starter templates (welcome, newsletter, product launch, follow-up, re-engagement, personal note) and a drag-and-drop studio where you can save as many of your own designs as you like.
• Segments by source (captured or imported), tag, signup date or consent status; Contact Form 7, WPForms, Elementor Pro Forms and Gravity Forms tag their contacts automatically.
• CSV import and export, up to 5,000 rows per file, with tags and a recorded permission statement.
• A delivery dashboard with sent, failed and skipped counts per campaign and per sending account.

Sending through your own accounts

Optcatch does not send mail from its own servers: you connect Gmail or Google Workspace and Microsoft 365 / Outlook (via OAuth2, so no mailbox password is stored), SendGrid's API, or any SMTP server, and campaigns rotate across as many accounts as you like. Each account has its own daily limit and per-minute sending speed, and recipients beyond the daily limit go out the next day. Setup is covered in the sending accounts guide.

Free vs Pro

The free version on WordPress.org has no usage limits: unlimited contacts, saved segments and custom templates, CSV import up to 5,000 rows per file, immediate sends, and any number of sending accounts with rotation. Optcatch Pro is a separate plugin from optcatch.com that adds features, not bigger numbers: email warm-up (Pro), scheduled sends and drip / autoresponder campaigns (Pro), wake-up and re-engagement emails (Pro), webhooks and REST API (Pro), six extra Pro templates (Pro) and attachments / hosted download links (Pro). At the time of writing, Pro starts at $3 a month for one site, with annual and one-time options (see optcatch.com/pricing for current Pro pricing), and you can see the Pro features.

Cost: what you actually pay for

With Optcatch, the plugin itself is free and does not charge per contact. That does not mean sending is free in every case. Your costs depend on the accounts you send through:

• A Gmail, Google Workspace or Microsoft 365 mailbox you already pay for adds nothing extra, but these mailboxes have their own sending limits set by the provider.
• SendGrid or a transactional SMTP service (Amazon SES, Brevo, Mailgun and similar) has its own pricing.
• Your hosting has to run WordPress's background jobs reliably.

With Mailchimp, you pay one provider for storage, sending and the tools around it, and that price is tiered by contacts and features. For a small list, Mailchimp's entry plans may cost you little or nothing. For a larger list where you already have mailboxes or an SMTP service, a self-hosted plugin can work out cheaper. Do the maths with your own list size and current prices.

Data ownership

Optcatch stores contacts, consent records and send history in your WordPress database. By default, mail goes out through your site's own wp_mail() and no contact data leaves your site. When you connect Gmail, Microsoft 365, SendGrid or an SMTP server, the recipient address and email content go to that provider to deliver the message, which is how any sending works.

With a hosted platform, the provider holds your list. That is not necessarily worse. A good provider handles backups, security and uptime for you. With a WordPress plugin, your list is only as safe as your site's backups and security.

Where Mailchimp is stronger

To be clear about what you would give up:

• Managed deliverability. Mailchimp runs its own sending infrastructure and manages sender reputation at scale. With Optcatch, deliverability is your responsibility: you set up SPF, DKIM and DMARC for your domain, choose sensible daily limits, and keep an eye on your accounts.
• No provider limits to manage. With Mailchimp you do not have to think about Gmail or Microsoft sending caps. With Optcatch, a large send may take several days if your accounts have low daily limits, and that pacing is intentional.
• Analytics and testing. Mailchimp offers detailed reporting and, on its paid plans, A/B testing. Optcatch's dashboard shows delivery counts (sent, failed, skipped) and does not offer open/click analytics or A/B testing.
• Ecosystem. Mailchimp has a large library of integrations, landing pages and a visual automation builder. Optcatch is focused on WordPress forms and campaigns; its automations (drip, wake-up, re-engagement) are Pro features and are simpler.
• Support and scale. A large platform has dedicated support teams and is built for very large lists. Optcatch runs on your WordPress hosting, so performance depends on your server.

Comparison at a glance

Who Optcatch suits

Optcatch fits small businesses, bloggers, shops and agencies that:

• already collect leads through WordPress forms,
• want the list and consent records inside their own site,
• have mailboxes or an SMTP service they are comfortable sending from,
• send to a list size their accounts' daily limits can handle.

Mailchimp is likely the better fit if you need detailed analytics and A/B testing, want someone else to own deliverability, send very large volumes, or rely on many non-WordPress integrations.

Getting started

You can install Optcatch from the WordPress.org plugin page. The getting started guide walks through setup, and a sensible first run looks like this:

1. Go to Optcatch → Settings, add a sending account and send yourself a test email. Check that SPF and DKIM pass.
2. Review the consent wording.
3. Import your existing list (CSV, up to 5,000 rows per file) and confirm you have permission to email it.
4. Create a segment, pick a template and send a small campaign first.

On a new mailbox, start with a low daily limit and raise it over a few weeks, or let Pro's warm-up do it for you.

Read next

• Capture Contact Form 7 Leads into a Newsletter List
• GDPR Mailing List in WordPress: Consent & Unsubscribe
• Send Newsletters from WordPress with Gmail or Microsoft 365