Softwr

Email Marketing · head to head

Instantly vs Mailjet

Instantly logo

Instantly

Email Marketing

Cold email outreach platform with AI, lead sourcing, and mailbox rotation

From
Free
Rated
-
Full reviewWebsite
Mailjet logo

Mailjet

Email Marketing

Email API, SMTP relay and campaign platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Instantly shared mailbox rotation could expose sender reputation to other users' poor practices; domain reputation can degrade rapidly if co-users violate sending norms; Mailjet free plan caps at 6,000 emails per month with a hard 200 emails per day limit
  • Prices and features above were last checked on 28 August 2026.

Where they differ

Only the attributes on which Instantly and Mailjet actually diverge.

Attributes where Instantly and Mailjet differ
AttributeInstantlyMailjet
Pricing modelfreemiumsubscription
PlatformsWeb, APIWeb

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Email Marketing).

What people use each for

The jobs each tool is most often brought in to do.

Instantly

  • SaaS sales teams automating cold outreach and lead qualificationnot Mailjet
  • Digital agencies and freelancers running campaigns for multiple clientsnot Mailjet
  • E-commerce and B2B businesses prospecting at scalenot Mailjet
  • Recruitment agencies sourcing candidates via emailnot Mailjet
  • Partnerships and channel sales automating partner outreachnot Mailjet
  • Financial services and insurance lead generationnot Mailjet

Mailjet

  • Email marketing campaigns for small to medium-sized businessesnot Instantly
  • Transactional email delivery with API and SMTP relaynot Instantly

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Instantly

  • Shared mailbox rotation could expose sender reputation to other users' poor practices; domain reputation can degrade rapidly if co-users violate sending norms
  • AI campaign generation, whilst useful, produces generic copy; personalisation still requires manual review and editing for high-quality outreach
  • Email as primary channel faces declining effectiveness; spam filtering improves and email open rates decline generally
  • Lead database quality varies; verification filters may miss invalid addresses or outdated contacts
  • Freemium model limits features significantly; advanced analytics, API access, and priority support require paid tiers

Mailjet

  • Free plan caps at 6,000 emails per month with a hard 200 emails per day limit
  • Starter plan is capped at 2,000 contacts; unlimited contacts require the Essential tier
  • Email credits do not roll over and unused emails expire at the end of each billing cycle
  • Essential and Premium plans both cap at 15,000 emails per month for $17 and $27 respectively, so the price increase buys other features, not more volume

Pricing, plan by plan

Instantly

Free

No published plan breakdown. See the Instantly review.

Mailjet

Free
  • FreeFree
    • 6,000 emails per month
    • 200 emails per day limit
    • 1,000 contacts
  • Starter$9/monthly
    • 8,000 emails per month
    • 2,000 contacts
    • Brand Kit
  • Essential$17/monthly
    • 15,000 emails per month
    • Unlimited contacts
    • Segmentation
  • Premium$27/monthly
    • 15,000 emails per month
    • Advanced statistics
    • Automations

Which should you pick?

Choose Instantly if

  • You want to start without paying.
  • You work on Web, API.
Instantly review

Choose Mailjet if

  • You want to start without paying.
Mailjet review

Questions people ask

Is Instantly or Mailjet better?
Neither clearly leads. Instantly starts at Free and Mailjet at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Instantly or Mailjet?
Instantly starts at Free and Mailjet at Free.
Does Instantly or Mailjet run on more platforms?
Instantly runs on Web, API. Mailjet runs on Web.
Can I use Instantly for free?
Both have a free tier, so you can try either at no cost before committing.
What is Instantly best used for?
Instantly is most often used for saas sales teams automating cold outreach and lead qualification, digital agencies and freelancers running campaigns for multiple clients, e-commerce and b2b businesses prospecting at scale, recruitment agencies sourcing candidates via email. Of those, saas sales teams automating cold outreach and lead qualification and digital agencies and freelancers running campaigns for multiple clients are not what Mailjet is typically brought in for.

Answered from the vendors’ own pages

Instantly: Is Instantly free?

Instantly offers a freemium model. No credit card is required to start. Free tier includes basic lead finding and campaign creation; paid tiers unlock advanced features (API access, advanced analytics, priority support).

Source
Mailjet: Does Mailjet offer annual billing discounts?

Yes, Mailjet offers annual billing with a 10% discount compared to monthly billing. Both monthly and annual payment cycles are available for all paid plans.

Source
Instantly: How does Instantly's AI Copilot work?

AI Copilot generates email copy, subject lines, and follow-up sequences based on brief campaign descriptions. Users can customise generated templates before sending.

Source
Mailjet: What payment currencies are supported?

Mailjet accepts payments in USD, EUR, and GBP. Currency selection is available during account setup and can be changed in account settings.

Source
Instantly: What CRMs does Instantly integrate with?

Instantly integrates with Salesforce, HubSpot, Pipedrive, and Zapier. Custom integrations via REST API are available on paid plans.

Source
Mailjet: What features are limited on the Free plan?

The Free plan includes 6,000 emails per month with a 200 email per day limit, 1,000 contacts, basic statistics, form builder, and APIs. Advanced statistics, automations, landing pages, and team management require paid plans.

Source
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