ConvertKit vs SendGrid

Estimated monthly cost comparison — not just the headline price

Prices change often — confirm on the vendor's site before buying. Report incorrect pricing →

Quick Take

Estimated monthly costs are about the same

Based on advertised price plus documented recurring fees, not your exact usage.

Best for ConvertKit

Creator-focused email marketing platform (now branded as Kit). Free for 10,000 subscribers but limit

Best for SendGrid

Twilio's email delivery platform for transactional and marketing emails. Free for 100 emails/day, th

C

ConvertKit

Creator-focused email marketing platform (now branded as Kit). Free for 10,000 s...

Advertised

$0

/month

Estimated monthly cost

$109

/month (illustrative)

Documented Extra Fees (+$109/mo)

Subscriber-Based Pricing Scaling

Creator plan: 1K subs = $29/mo, 5K = $79/mo, 10K = $119/mo, 55K = $379/mo. Cost roughly doubles ever...

+$50/mo

Free Plan Send Restriction

Free plan allows only 1 email broadcast per month to 10,000 subscribers. Daily or weekly newsletters...

+$29/mo

No A/B Testing on Free or Creator

A/B testing subject lines requires Creator Pro ($59/mo minimum). Creator plan only supports basic br...

+$30/mo

Pricing Tiers

Newsletter
$0/mo
CreatorPopular
$29/mo

$25/mo annual

Creator Pro
$59/mo

$50/mo annual

Affiliate link — we may earn a commission

S

SendGrid

Twilio's email delivery platform for transactional and marketing emails. Free fo...

Advertised

$0

/month

Estimated monthly cost

$105

/month (illustrative)

Documented Extra Fees (+$105/mo)

Dedicated IP Required for Deliverability

Shared IP on lower plans hurts deliverability. Dedicated IP costs $20-$40/mo extra and requires Pro ...

+$30/mo

Email Validation Add-On

Email address validation to reduce bounces costs $0.003-$0.01 per validation. Validating a 50K list ...

+$50 per use

Overage Email Charges

Exceeding monthly email limit incurs overage at $0.00085-$0.001 per email. 100K extra emails = $85-$...

+$25/mo

Pricing Tiers

Free
$0/mo
EssentialsPopular
$20/mo
Pro
$90/mo

Key Differences

1

ConvertKit advertises $0/mo. SendGrid advertises $0/mo.

2

ConvertKit has 3 documented hidden fees. SendGrid has 3.

3

ConvertKit confidence: 76%. SendGrid confidence: 75%.

Cost Comparison Summary

MetricConvertKitSendGridWinner
Advertised Price$0/mo$0/mo—
Estimated Monthly Cost$109/mo$105/mo—
Recurring Extra Fees+$109/mo+$105/moSendGrid
One-Time Costs$0$0—
# Documented Fees33—
Pricing Tiers33—
Affiliate Program30% recurring for 24 monthsNone—

Ready to get started?

Try the tool that fits your needs. Both offer free trials or free tiers.

C

ConvertKit

From $0/mo

Try ConvertKit Free →

Affiliate link — we may earn a commission

S

SendGrid

From $0/mo

Frequently Asked Questions

Is ConvertKit or SendGrid cheaper?

ConvertKit advertises $0/mo and SendGrid advertises $0/mo. ConvertKit has 3 documented extra fees (recurring: +$109/mo), while SendGrid has 3 (recurring: +$105/mo). On these illustrative assumptions the estimated monthly costs are about the same. Your real cost depends on seats and usage — use the calculator for your numbers.

What extra fees does ConvertKit have?

ConvertKit has 3 documented extra fees: Subscriber-Based Pricing Scaling, Free Plan Send Restriction, No A/B Testing on Free or Creator. Recurring fees add roughly $109/mo on top of the $0/mo advertised price.

What extra fees does SendGrid have?

SendGrid has 3 documented extra fees: Dedicated IP Required for Deliverability, Email Validation Add-On, Overage Email Charges. Recurring fees add roughly $105/mo on top of the $0/mo advertised price.

Should I choose ConvertKit or SendGrid?

Choose ConvertKit if: Creator-focused email marketing platform (now branded as Kit). Free for 10,000 subscribers but limit. Choose SendGrid 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.

How accurate is this ConvertKit vs SendGrid comparison?

This comparison is compiled from public vendor pricing pages and documentation. It uses illustrative assumptions (see "Cost Comparison Summary"), not your exact seats or usage, and vendor prices change often. Confirm current prices on each vendor's site, and use our calculator with your own usage for a closer estimate. Spotted an error? Email hello@trulycritic.com.

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