Mailchimp vs SendGrid
Mailchimp is a marketing campaign platform built for marketers. SendGrid is a transactional email API built for developers. Most founders who compare them actually need both.
Key takeaways
This is rarely an either-or decision — it is usually a use case identification problem. Mailchimp handles marketing campaigns. SendGrid handles application-triggered transactional email. Many SaaS founders end up paying for both, which is why BYOS tools exist.
- Mailchimp Standard starts at $20/month (500 contacts) — contact-based pricing scales steeply
- SendGrid Essentials starts at $19.95/month for up to 100k emails — volume-based, not contact-based
- SendGrid dropped its permanent free tier in 2025 — now a 60-day trial then paid plans only
- SendGrid Marketing Campaigns (the non-developer module) costs extra on top of the API plan
Mailchimp vs SendGrid: Quick Comparison
| Features | Mailchimp | SendGrid |
|---|---|---|
| Primary use case | Marketing campaigns | Transactional email API |
| Built for | Marketers | Developers |
| Pricing model | Per contact stored | Per email sent |
| Free plan | 500 contacts | No (60-day trial, 2025 change) |
| Entry paid price | $13/month (Essentials) | $19.95/month (Essentials) |
| At 50k marketing list | ~$339/month (Standard) | N/A — contact-count not relevant |
| At 200k emails/month | Not designed for volume | ~$19.95-$89.95/month |
| Marketing campaigns | Built-in | Extra cost add-on |
| REST API / SMTP relay | ✓ Mandrill add-on | Core product |
| Dedicated IPs | ✓ Premium only | ✓ +$30/month |
What Are Mailchimp and SendGrid?
Mailchimp
Mailchimp is the most recognised email marketing platform, used by over 13 million businesses for campaigns, automation, and list management.
- Free plan: 500 contacts, 1,000 emails/month, 500 sends/day — no credit card required
- Essentials: $13/month (500 contacts); Standard: $20/month (500 contacts) with automation and A/B testing
- Premium: $350/month with predictive analytics and advanced segmentation
- Built for marketers — drag-and-drop editor, 300+ templates, 300+ native integrations
- Transactional email via Mandrill add-on (priced separately per block of 25k emails)
SendGrid
SendGrid is a developer-focused email API owned by Twilio, designed for high-volume transactional email from web applications.
- Free tier removed in 2025 — replaced with a 60-day trial; paid plans required after
- Essentials: $19.95/month (up to 100k emails); Pro: $89.95/month (up to 2.5M emails)
- Volume-based pricing — no contact count limit, bills by emails sent per month
- REST API, SMTP relay, webhooks, and dedicated IPs (dedicated IP: +$30/month)
- SendGrid Marketing Campaigns module exists but is a secondary product layered on the API — priced separately per contact
Pricing Models: Mailchimp, SendGrid, and mailtani
Mailchimp: contact-based
- Free: 500 contacts, 1,000 emails/month
- Standard: $20/month (500), $100/month (5k), $339/month (50k)
- Premium: $350/month — predictive analytics, advanced segmentation
- Transactional: Mandrill add-on, priced per 25k block of emails
- No volume pricing — costs based on contacts stored, not emails sent
SendGrid: volume-based
- Free tier removed 2025 — 60-day trial then paid plans only
- Essentials: $19.95/month (up to 100k emails/month)
- Pro: $89.95/month (up to 2.5M emails/month)
- Marketing Campaigns add-on: extra per-contact fee on top of API plan
- Dedicated IP: +$30/month; overage charges: ~$0.00133/email
mailtani: one flat price
- €89 one-time — no monthly fees ever
- Unlimited contacts, unlimited emails
- Bring your own AWS SES, Resend, or SMTP key
- Email warmup and inbox rotation included
- Marketing sequences, broadcasts, and transactional sends from one tool
Mailchimp vs SendGrid: The Full Breakdown
The use case split makes the choice obvious for most people. Marketers who want to send newsletters and campaigns without writing code choose Mailchimp. Developers who need to trigger emails from a web application via API choose SendGrid. The confusion arises for founders who need both — and the answer is usually two separate subscriptions, which gets expensive.
SendGrid removed its permanent free tier in 2025. Before 2025, SendGrid offered a permanent free plan with 100 emails/day. That is now a 60-day trial. After the trial expires, you must upgrade to Essentials ($19.95/month) or above. For early-stage projects that relied on SendGrid's free tier, this is a meaningful cost increase.
Mailchimp's contact-based pricing punishes list growth; SendGrid's volume-based pricing punishes send frequency. At 50k contacts, Mailchimp Standard costs ~$339/month regardless of how many emails you send. At 2.5M emails/month, SendGrid Pro costs $89.95/month regardless of how many contacts you have stored. The right pricing model depends entirely on your send behaviour.
SendGrid Marketing Campaigns is not a real Mailchimp replacement. The marketing module layered on top of the SendGrid API provides basic campaign sending, but lacks Mailchimp's automation depth, segmentation sophistication, 300+ integrations, and marketer-friendly UX. Developers who want to consolidate everything into SendGrid typically find the marketing experience underwhelming compared to a dedicated ESP.
The typical SaaS founder path ends up expensive. Send transactional email via SendGrid (or AWS SES), market via Mailchimp or another ESP. Two subscriptions, two platforms, two billing cycles. The combined cost at moderate scale often exceeds what a BYOS tool like mailtani costs for the lifetime of the product.
How Mailchimp, SendGrid, and mailtani Compare, Feature by Feature
| Feature | Mailchimp | SendGrid | mailtani |
|---|---|---|---|
| Marketer-friendly drag-and-drop UI | |||
| Visual automation builder | ✓ Standard+ | ✓ sequences | |
| Marketing campaigns included | ✓ extra cost | ||
| 300+ native integrations | |||
| Social ad management | |||
| REST API for dev integration | ✓ Mandrill add-on | ||
| SMTP relay | ✓ Mandrill add-on | ||
| Transactional email (programmatic) | ✓ Mandrill add-on | ||
| Dedicated IPs | ✓ Premium | ✓ +$30/month | |
| Webhook event tracking | |||
| A/B testing | ✓ Standard+ | ✓ add-on | |
| List segmentation | Advanced | Basic (add-on) | |
| Landing pages | |||
| Email warmup | |||
| Inbox rotation | |||
| BYOS (own SMTP/SES key) | |||
| Flat one-time pricing | |||
| Unlimited email sends | |||
| Predictive analytics | ✓ Premium | ||
| Free plan or permanent free tier |
The Third Option: Why Founders Pick mailtani
- mailtani bridges both use cases — connect your own AWS SES key for transactional-grade infrastructure, then run marketing sequences and broadcasts on top
- Email warmup and inbox rotation built in — neither Mailchimp nor SendGrid offer this
- One flat price — €89 once instead of paying two separate monthly subscriptions for marketing and transactional email
- Full deliverability control — your own SMTP key, your own sending reputation, your own infrastructure
What Each Tool Is Built For
Mailchimp
Mailchimp is built for marketers running campaigns without code
Mailchimp suits marketing teams and small business owners who want to send newsletters, run automation sequences, and manage contacts without writing code. Its drag-and-drop editor, 300+ templates, and integration ecosystem make it accessible. It is not a transactional email API — you cannot easily trigger application-level emails (password resets, receipts) from Mailchimp without the Mandrill add-on and developer work.
SendGrid
SendGrid is built for developers sending programmatic email from applications
SendGrid suits developers and engineering teams who need to send transactional email from a web application via REST API or SMTP relay. Password resets, order confirmations, account alerts, and notification emails are its core use case. Its Marketing Campaigns module exists, but it is a secondary product — most developers use SendGrid for transactional email and a separate tool for marketing campaigns.
Mailchimp vs SendGrid: Who Should Choose Which?
Choose Mailchimp if...
- You are a marketer running campaigns, newsletters, and automation flows
- You want a drag-and-drop editor and visual automation builder without writing code
- You need social ad management and CRM features alongside email
- You want 300+ native integrations (Shopify, Salesforce, WooCommerce)
- You want a free plan to start building a list without committing to a subscription
Choose SendGrid if...
- You are a developer integrating email into a web or mobile application
- Your primary need is transactional email — receipts, password resets, account alerts
- You need a REST API with webhooks, event tracking, and SMTP relay
- You want volume-based pricing and dedicated IP options for high-throughput sending
- You are building on a modern stack (Node.js, Python, Ruby) and want first-class SDK support
Mailchimp vs SendGrid: Pros & Cons
Mailchimp
Pros
- Free plan — 500 contacts, 1,000 emails/month, no credit card
- Marketer-friendly UI — drag-and-drop editor, 300+ templates, no code required
- Advanced automation on Standard — multi-step customer journeys and conditional logic
- 300+ native integrations — Shopify, Salesforce, WooCommerce, and the full marketing stack
- Social ad management — Facebook and Instagram ads managed alongside email
Cons
- Contact-based pricing scales steeply — Standard costs $339/month at 50k contacts
- No transactional email without Mandrill — application-level sends require an add-on and developer setup
- Phone support removed in 2023 — chat and email on paid plans only
- Not a developer tool — REST API access is limited; Mandrill is separate and expensive
- Daily send cap on free plan — 500 sends/day is restrictive for testing at volume
SendGrid
Pros
- Purpose-built transactional email API — the core product for application-triggered sends
- Volume-based pricing — $19.95/month for up to 100k emails is cost-effective for high-frequency senders
- REST API, SMTP relay, and webhooks — first-class developer tooling
- Dedicated IPs available — better deliverability control for high-volume senders
- Wide SDK and language support — Python, Node.js, Ruby, PHP, Go, and more
Cons
- Free tier removed in 2025 — 60-day trial only; must pay after
- Marketing Campaigns is an afterthought — lacks Mailchimp's automation depth and integrations
- Not for marketers — the interface is developer-centric; non-technical users struggle
- Extra cost for Marketing Campaigns — API plan + per-contact add-on = two billing lines
- No email warmup or inbox rotation — deliverability control is IP-level only
Neither Mailchimp nor SendGrid right for you?
Mailchimp charges per contact; SendGrid charges per email sent — most SaaS founders end up paying for both. mailtani is €89 once — connect your own AWS SES or SMTP key, send unlimited emails with warmup, inbox rotation, and sequences included. One tool. One price.
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