What the evidence answers

A reading of reviewed official documentation for Mailjet and SendGrid. It is not a hands-on test, a ranking or a recommendation of one product.

Price

  • Mailjet From $9/mo
    • Free: no subscription charge
    • Starter: $9.00 monthly
    • Essential: $19.00 monthly
    • Premium: $29.00 monthly
    • Custom: Vendor quotation required
  • SendGrid From $19.95/mo
    • Free Trial: no subscription charge
    • Essentials: $19.95 monthly
    • Pro: $89.95 monthly
    • Premier: Vendor quotation required

Both list prices on the same basis. Compare what each plan includes; the lower amount alone does not make the better choice.

Documented for both

Sending volume
Mailjet Free: 6,000 emails per monthStarter: 8,000 emails per monthEssential: 15,000 emails per monthPremium: 15,000 emails per month
SendGrid Free Trial: 100 emails per dayEssentials: 50,000 to 100,000 emails a monthPro: 100,000 to 2,500,000 emails a month
Webhooks and events
Mailjet APIs, SMTP relay and webhooks on Free and paid plans.
SendGrid Free Trial: 1 event webhookEssentials: 2 event webhooksPro: 5 event webhooksPremier: 5 event webhooks
Dedicated IP
Mailjet Premium: available on request from the 100,000-send tier.Custom: One dedicated IP, with the option to buy more
SendGrid Pro and Premier include dedicated IPs; more can be purchased.Pro: 1 dedicated IP includedPremier: 1 dedicated IP included
Support
Mailjet Phone and chat support start from the 50k plans.Free: Online support in the first month onlyStarter: Online supportPremium: Priority support
SendGrid Access to expert services and personalized support is listed as available for purchase.
Overage charges
Mailjet You can keep sending after the plan's emails run out; extra emails are billed per 1,000, at a price the page text does not show.
SendGrid Sending past the plan's allowance may add overage charges on top of the monthly rate; the rate is not published on the pricing page.

Limits to check

  • Mailjet Unused emails do not roll over; they expire at the end of each billing cycle.
  • SendGrid The only free option is a 60-day trial at 100 emails a day, not a permanent free plan.

Not verified yet

No reviewed evidence for either product on sender domains.

Documented for one product only, shown in the table below: SendGrid: log retention.

Not verified means our reviewed sources do not establish it. It does not mean a product lacks the capability or that it costs nothing.

Next steps

  • Ask Mailjet about sender domains and log retention; our sources do not establish them yet.
  • Ask SendGrid about sender domains; our sources do not establish it yet.
Documented scope and limits; unverified dimensions remain unknown.
RequirementMailjetSendGrid
Pricing
From $19.95/mo

Compare all 4 plans

Who it is for
Email API, SMTP relay and webhooks, sold in plans that also cover marketing contacts and an email editor.

Verified Oct 11, 2026 · Mailjet: official product and plan documentation

Email API for application email, priced by monthly send volume and feature tier.

Verified Oct 11, 2026 · SendGrid: official product and plan documentation

Coverage limits
Unused emails do not roll over; they expire at the end of each billing cycle.

Verified Oct 11, 2026 · Mailjet: official product and plan documentation

The only free option is a 60-day trial at 100 emails a day, not a permanent free plan.

Verified Oct 11, 2026 · SendGrid: official product and plan documentation

Sending volume
  • Free 6,000 emails per month
  • Starter 8,000 emails per month
  • Essential 15,000 emails per month
  • Premium 15,000 emails per month
  • Free Trial 100 emails per day
  • Essentials 50,000 to 100,000 emails a month
  • Pro 100,000 to 2,500,000 emails a month
Log retentionNot verified
  • Free Trial 3 days of searchable email activity
  • Essentials 3 days of searchable email activity
  • Pro 7 days of searchable email activity
  • Premier 7 days of searchable email activity
Webhooks and events
APIs, SMTP relay and webhooks on Free and paid plans.

Verified Oct 11, 2026 · Mailjet: official product and plan documentation

  • Free Trial 1 event webhook
  • Essentials 2 event webhooks
  • Pro 5 event webhooks
  • Premier 5 event webhooks
Dedicated IP
Premium: available on request from the 100,000-send tier.

Verified Oct 11, 2026 · Mailjet: official product and plan documentation

  • Custom One dedicated IP, with the option to buy more
Pro and Premier include dedicated IPs; more can be purchased.

Verified Oct 11, 2026 · SendGrid: official product and plan documentation

  • Pro 1 dedicated IP included
  • Premier 1 dedicated IP included
Support
Phone and chat support start from the 50k plans.

The page does not say which plan names qualify.

Verified Oct 11, 2026 · Mailjet: official product and plan documentation

  • Free Online support in the first month only
  • Starter Online support
  • Premium Priority support
Access to expert services and personalized support is listed as available for purchase.

No price is shown.

Verified Oct 11, 2026 · SendGrid: official product and plan documentation

Overage charges
You can keep sending after the plan's emails run out; extra emails are billed per 1,000, at a price the page text does not show.

Verified Oct 11, 2026 · Mailjet: official product and plan documentation

Sending past the plan's allowance may add overage charges on top of the monthly rate; the rate is not published on the pricing page.

SendGrid suggests upgrading if you regularly hit the limit.

Verified Oct 11, 2026 · SendGrid: official product and plan documentation

Coverage note

No daily sending limit.

Additional IPs can be bought as an add-on.

More history is available for purchase.

Volume is selected at purchase.

1 requirement without reviewed evidence here

Not verified means the reviewed sources do not establish it; it does not mean a product lacks it or that it costs nothing.

  • Sender domains Mailjet: not verified · SendGrid: not verified

Choose two or three products.