Software · head to head
Mailchimp vs Thunder Client

Thunder Client
Software
Lightweight REST API client built as VSCode extension
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Mailchimp the free plan allows 250 contacts and 500 sends a month, with a 250 daily cap; Thunder Client paid plans are billed annually only: Starter is $3 per user per month and capped at a maximum of 10 seats, Business is $7 per user per month with 500 monthly collection runs per user, and Enterprise is $16 per user per month for unlimited runs
- They diverge on capability: Mailchimp covers Email campaigns, Thunder Client covers REST Client.
Where they differ
Only the attributes on which Mailchimp and Thunder Client actually diverge.
| Attribute | Mailchimp | Thunder Client |
|---|---|---|
| Pricing model | Unknown | freemium |
| Platforms | Web, iOS, Android | VSCode extension, Web |
| Founded | 2001 | 2021 |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Mailchimp
- Email campaigns
- Marketing automation
- Landing pages
- Forms & popups
- Audience management
- Content studio
- Analytics
- Social media
Only in Thunder Client
- REST Client
- Environment variables
- Response testing
- VSCode
- GitHub
- Webhook support
- VSCode extension support
- Web support
What people use each for
The jobs each tool is most often brought in to do.
Mailchimp
- Email newslettersnot Thunder Client
- E-commerce marketingnot Thunder Client
- Lead generationnot Thunder Client
- Customer engagementnot Thunder Client
- Marketing automationnot Thunder Client
Thunder Client
- API Developmentnot Mailchimp
- API Gatewaynot Mailchimp
- API Testingnot Mailchimp
- API Documentationnot Mailchimp
- Microservicesnot Mailchimp
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Mailchimp
- The free plan allows 250 contacts and 500 sends a month, with a 250 daily cap
- Price is driven by contact count, so the list growing raises the bill regardless of how much you send
- Send allowances are a multiple of contacts, 10x on Essentials and 12x on Standard, so a large list with heavy sending forces a tier change
- Essentials allows 3 seats and Standard 5; unlimited seats need Premium at $350 a month
- The headline $13 and $20 prices are for 500 contacts, not a flat rate
Thunder Client
- Paid plans are billed annually only: Starter is $3 per user per month and capped at a maximum of 10 seats, Business is $7 per user per month with 500 monthly collection runs per user, and Enterprise is $16 per user per month for unlimited runs
Pricing, plan by plan
Mailchimp
Free- FreeFree
- 250 contacts
- 500 sends per month
- Basic email campaigns
- Essentials$13/month
- 500+ contacts
- Email campaigns
- Basic automation
- Standard$20/month
- Advanced automation
- Segmentation
- Landing pages
Thunder Client
Free- FreeFree
- REST client
- Collection management
- Local testing
- Pro$8/monthly
- Cloud sync
- Team collaboration
- Advanced features
Which should you pick?
Choose Mailchimp if
- You need email campaigns.
- You want to start without paying.
- You work on Web, iOS, Android.
- You also want marketing automation.
Choose Thunder Client if
- You need rest client.
- You want to start without paying.
- You work on VSCode extension, Web.
- You also want environment variables.
Questions people ask
- Is Mailchimp or Thunder Client better?
- Neither clearly leads. Mailchimp starts at Free and Thunder Client at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Mailchimp or Thunder Client?
- Mailchimp starts at Free and Thunder Client at Free.
- Does Mailchimp or Thunder Client run on more platforms?
- Mailchimp runs on Web, iOS, Android. Thunder Client runs on VSCode extension, Web.
- Can I use Mailchimp for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Mailchimp best used for?
- Mailchimp is most often used for email newsletters, e-commerce marketing, lead generation, customer engagement. Of those, email newsletters and e-commerce marketing are not what Thunder Client is typically brought in for.
- What can Mailchimp do that Thunder Client cannot?
- Mailchimp covers Email campaigns, Marketing automation, Landing pages, Forms & popups. Thunder Client covers REST Client, Environment variables, Response testing, VSCode.
Answered from the vendors’ own pages
Mailchimp: Does Mailchimp offer a free plan?
Yes, Mailchimp's free plan supports up to 250 contacts and 500 sends per month with a 250-per-day cap.
SourceMailchimp: What email features does Mailchimp include?
Mailchimp provides email campaign builder, automation sequences, segmentation, contact management, and A/B testing for email marketing.
SourceMailchimp: Can Mailchimp integrate with e-commerce platforms?
Yes, Mailchimp integrates with Shopify, WooCommerce, Squarespace, and other e-commerce platforms for customer sync and abandoned cart automation.
SourceRelated pages
More on Thunder Client
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