True cost comparison — not just what the pricing page says
Quick Verdict
Klaviyo saves you 5%
Best for SendGrid
E-commerce email and SMS marketing platform. Free for 250 contacts, then contact-based pricing that
Best for Klaviyo
Twilio's email delivery platform for transactional and marketing emails. Free for 100 emails/day, th
Twilio's email delivery platform for transactional and marketing emails. Free fo...
Advertised
$0
/month
True Cost
$105
/month (typical)
Dedicated IP Required for Deliverability
Shared IP on lower plans hurts deliverability. Dedicated IP costs $20-$40/mo extra and requires Pro ...
Email Validation Add-On
Email address validation to reduce bounces costs $0.003-$0.01 per validation. Validating a 50K list ...
Overage Email Charges
Exceeding monthly email limit incurs overage at $0.00085-$0.001 per email. 100K extra emails = $85-$...
E-commerce email and SMS marketing platform. Free for 250 contacts, then contact...
Advertised
$0
/month
True Cost
$205
/month (typical)
Steep Contact-Based Scaling
Free for 250 contacts. Then: 1K = $30/mo, 5K = $100/mo, 10K = $150/mo, 25K = $400/mo, 50K = $720/mo....
SMS Credits Charged Separately
SMS marketing requires separate credit purchases. US SMS: $0.01-$0.015/message. 10K SMS/mo = $100-15...
Email Send Limits Per Tier
Email sends are capped at 10x your contact limit on most plans. Exceeding requires upgrading to a hi...
Klaviyo advertises $0/mo. SendGrid advertises $0/mo.
Klaviyo has 3 documented hidden fees. SendGrid has 3.
Klaviyo confidence: 78%. SendGrid confidence: 75%.
| Metric | SendGrid | Klaviyo | Winner |
|---|---|---|---|
| Advertised Price | $0/mo | $0/mo | SendGrid |
| True Monthly Cost | $105/mo | $205/mo | SendGrid |
| Hidden Fee Total | +$105/mo | +$205/mo | SendGrid |
| # Hidden Fees | 3 | 3 | SendGrid |
| Confidence Score | 75% | 78% | Klaviyo |
| Pricing Tiers | 3 | 3 | — |
| Affiliate Program | None | None | — |
SendGrid advertises $0/mo and Klaviyo advertises $0/mo. However, when you include hidden fees, SendGrid has 3 documented hidden fees adding +$105/mo, while Klaviyo has 3 hidden fees adding +$205/mo. Based on true cost, Klaviyo is typically 5% cheaper.
SendGrid has 3 documented hidden fees: Dedicated IP Required for Deliverability, Email Validation Add-On, Overage Email Charges. These add approximately +$105/mo on top of the $0/mo advertised price.
Klaviyo has 3 documented hidden fees: Steep Contact-Based Scaling, SMS Credits Charged Separately, Email Send Limits Per Tier. These add approximately +$205/mo on top of the $0/mo advertised price.
Choose SendGrid if: E-commerce email and SMS marketing platform. Free for 250 contacts, then contact-based pricing that . Choose Klaviyo if: Twilio's email delivery platform for transactional and marketing emails. Free for 100 emails/day, th. The right choice depends on your team size, usage volume, and which features you need most.
This comparison is based on manual research of official pricing pages, terms of service, and user reports. SendGrid data has a 75% confidence score and Klaviyo has 78%. Prices were last verified in April 2026. For the most accurate estimate, enter your specific usage in our calculator.
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