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Email Marketing · head to head

Instantly vs Shortwave

Instantly logo

Instantly

Email Marketing

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

From
Free
Rated
-
Full reviewWebsite
Shortwave logo

Shortwave

Email Marketing

AI-powered email assistant for intelligent inbox management

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; Shortwave per-seat pricing increases team costs compared to flat-rate email solutions
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Instantly and Shortwave actually diverge.

Attributes where Instantly and Shortwave differ
AttributeInstantlyShortwave
Pricing modelfreemiumUnknown
PlatformsWeb, APIiOS, Android, macOS, Windows

Identical on both: starting price (Free), free tier (Yes), 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 Shortwave does not also cover.

Only in Shortwave

  • AI Email Filtering
  • Intelligent Autocomplete
  • Voice-Style Composition
  • Meeting Scheduling
  • Email-to-Todo Conversion
  • AI-Powered Search
  • Team Collaboration
  • Email Summaries

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

Shortwave

  • Reducing inbox overload through AI-powered organizationnot Instantly
  • Drafting professional emails using natural languagenot Instantly
  • Scheduling meetings without back-and-forth coordinationnot Instantly
  • Searching email archives using conversational queriesnot Instantly
  • Converting emails to tasks for team task trackingnot 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

Shortwave

  • Per-seat pricing increases team costs compared to flat-rate email solutions
  • AI features may require higher tier plans, limiting value for smaller teams
  • Dependency on third-party integrations for full feature depth
  • Learning curve for effective use of AI-powered features
  • Limited customization for AI filter behavior compared to manual rules

Pricing, plan by plan

Instantly

Free

No published plan breakdown. See the Instantly review.

Shortwave

Free
  • FreeFree
    • Email search and organization
    • Basic inbox tools
    • Limited AI features
  • Business$30/month
    • Full standard search history
    • 5 years AI search history
    • Max 50 threads per AI search
  • Premier$45/month
    • Everything in Business
    • 2x more AI usage
    • Unlimited AI search history
  • Max$120/month
    • Everything in Premier
    • 6x more AI usage
    • Max 150 threads per AI search

Which should you pick?

Choose Instantly if

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

Choose Shortwave if

  • You need ai email filtering.
  • You want to start without paying.
  • You work on iOS, Android, macOS, Windows.
  • You also want intelligent autocomplete.
Shortwave review

Questions people ask

Is Instantly or Shortwave better?
Neither clearly leads. Instantly starts at Free and Shortwave at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Instantly or Shortwave?
Instantly starts at Free and Shortwave at Free.
Does Instantly or Shortwave run on more platforms?
Instantly runs on Web, API. Shortwave runs on iOS, Android, macOS, Windows.
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 Shortwave is typically brought in for.
What can Instantly do that Shortwave cannot?
Shortwave covers AI Email Filtering, Intelligent Autocomplete, Voice-Style Composition, Meeting Scheduling.

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
Shortwave: Is there a free trial for Shortwave?

Yes, Shortwave offers a 14-day free trial for all paid plans with no credit card required.

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
Shortwave: What platforms does Shortwave support?

Shortwave is available on iOS, Android, macOS, and Windows for full cross-platform email management.

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
Shortwave: How much AI usage do I get per plan?

Business plan includes 3 AI-powered filters and standard AI usage. Premier (2x more AI) and Max (6x more AI) plans provide increasing levels of AI feature access.

Source
Shortwave: What integrations does Shortwave support?

Shortwave integrates with Slack, Calendar, Notion, Asana, HubSpot, and 3,000+ apps via Tasklet.

Source
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