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Email Marketing · head to head

Instantly vs Sendy

Instantly logo

Instantly

Email Marketing

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

From
Free
Rated
-
Full reviewWebsite
Sendy logo

Sendy

Email Marketing

Self-hosted newsletter app bought once for $69 that sends through your own Amazon SES account

From
$69/one-time
Rated
-
Full reviewWebsite

The short version

  • Only Instantly has a free tier, so it costs nothing to try first.
  • 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; Sendy free updates run only to the next major version, so the one-time purchase is really one purchase per major release and the long-term cost is not zero.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Instantly and Sendy actually diverge.

Attributes where Instantly and Sendy differ
AttributeInstantlySendy
Starting priceFree$69/one-time
Pricing modelfreemiumOne-time purchase
Free tierYesNo
PlatformsWeb, APIWeb, Linux

Identical on both: user rating (Not yet rated), category (Email Marketing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Instantly

Nothing recorded that Sendy does not also cover.

Only in Sendy

  • One-time licence
  • Amazon SES delivery
  • Multiple brands
  • Autoresponders
  • Segmentation
  • Bounce and complaint handling
  • Reporting
  • Client access

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

Sendy

  • A publisher with a large list sending frequently, where a hosted platform bills by subscriber count month after monthnot Instantly
  • An agency managing newsletters for several clients who each get their own brand and login under one licencenot Instantly
  • A business that must keep subscriber data on its own infrastructure for privacy or contractual reasonsnot Instantly
  • A developer wiring signups from a custom application into a mailing list without paying platform API feesnot 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

Sendy

  • Free updates run only to the next major version, so the one-time purchase is really one purchase per major release and the long-term cost is not zero.
  • Deliverability becomes entirely your problem: SES gives you a raw sending pipe and no warm-up guidance, reputation dashboards or deliverability consultants when a campaign starts landing in spam.
  • Amazon SES requires production access approval and will suspend accounts on high bounce or complaint rates, which can take a list offline mid-campaign with little warning.
  • The template editor and design tooling are basic next to Mailchimp or Klaviyo, so anything visually ambitious means hand-written HTML email.
  • You own the server: PHP upgrades, database backups and patching are yours, and an unmaintained Sendy install holding a subscriber list is a data breach waiting to happen.

Pricing, plan by plan

Instantly

Free

No published plan breakdown. See the Instantly review.

Sendy

$69/one-time
  • Sendy licence$69/one-time
    • One-time purchase, no subscription
    • Free updates only up to the next major version
    • Unlimited lists, subscribers and campaigns
  • AI Assistant bundle$39/one-time
    • Optional add-on, listed at a discount from $49
    • AI writing assistance inside the campaign editor
  • Installation service$79/one-time
    • Optional one-off setup by the vendor
    • For buyers who do not want to configure hosting and SES themselves

Which should you pick?

Choose Instantly if

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

Choose Sendy if

  • You need one-time licence.
  • You work on Web, Linux.
  • You also want amazon ses delivery.
Sendy review

Questions people ask

Is Instantly or Sendy better?
Neither clearly leads. Instantly starts at Free and Sendy at $69/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Instantly or Sendy?
Instantly has a free tier; the other does not. Paid plans start at Free for Instantly and $69/one-time for Sendy.
Does Instantly or Sendy run on more platforms?
Instantly runs on Web, API. Sendy runs on Web, Linux.
Can I use Instantly for free?
Yes. Instantly has a free tier, so you can try it without paying. Sendy starts at $69/one-time.
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 Sendy is typically brought in for.
What can Instantly do that Sendy cannot?
Sendy covers One-time licence, Amazon SES delivery, Multiple brands, Autoresponders.

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
Sendy: What does it actually cost to send?

The licence is $69 once. Delivery is Amazon SES at roughly $1 per 10,000 emails, plus your own hosting, so a 50,000-contact weekly newsletter costs a few dollars a month to send.

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
Sendy: Are updates free forever?

No. Updates are free up to the next major version, for example within 7.x. Moving from 7.x to 8.x is a paid upgrade.

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
Sendy: Do I need to know how to set up a server?

Standard PHP and MySQL hosting is enough and the vendor compares it to installing WordPress, but the SES side needs AWS configuration. An $79 installation service is offered if you would rather not.

Sendy: What happens if Amazon suspends my SES account?

Your sending stops until you resolve it with AWS. There is no alternative delivery route built in, and this is the single biggest operational risk of the model.

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