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Email Marketing · head to head

SendGrid vs Shortwave

SendGrid logo

SendGrid

Email Marketing

Email at scale, proven deliverability, and so much more

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: SendGrid free plan caps at 100 emails per day and expires after 60 days, per twilio.com/en-us/products/email-api/pricing (Aug 2026), after which sending requires a paid plan; 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 SendGrid and Shortwave actually diverge.

Attributes where SendGrid and Shortwave differ
AttributeSendGridShortwave
Pricing modelfreemiumUnknown
PlatformsWebiOS, 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 SendGrid

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.

SendGrid

  • Marketing email campaigns and transactional email deliverynot Shortwave
  • Password reset and account confirmation emailsnot Shortwave
  • Newsletter distribution and subscriber engagementnot Shortwave
  • Automated email notifications for SaaS applicationsnot Shortwave

Shortwave

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

Where each one falls short

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

SendGrid

  • Free plan caps at 100 emails per day and expires after 60 days, per twilio.com/en-us/products/email-api/pricing (Aug 2026), after which sending requires a paid plan
  • Dedicated IP addresses are only included from the Pro plan at $89.95 per month; Essentials at $19.95 per month lacks a dedicated IP, per Twilio's own pricing page

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

SendGrid

Free

No published plan breakdown. See the SendGrid 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 SendGrid if

  • You want to start without paying.
SendGrid 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 SendGrid or Shortwave better?
Neither clearly leads. SendGrid 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, SendGrid or Shortwave?
SendGrid starts at Free and Shortwave at Free.
Does SendGrid or Shortwave run on more platforms?
SendGrid runs on Web. Shortwave runs on iOS, Android, macOS, Windows.
Can I use SendGrid for free?
Both have a free tier, so you can try either at no cost before committing.
What is SendGrid best used for?
SendGrid is most often used for marketing email campaigns and transactional email delivery, password reset and account confirmation emails, newsletter distribution and subscriber engagement, automated email notifications for saas applications. Of those, marketing email campaigns and transactional email delivery and password reset and account confirmation emails are not what Shortwave is typically brought in for.
What can SendGrid do that Shortwave cannot?
Shortwave covers AI Email Filtering, Intelligent Autocomplete, Voice-Style Composition, Meeting Scheduling.

Answered from the vendors’ own pages

SendGrid: How much does SendGrid cost?

SendGrid email API pricing is usage-based. Twilio SendGrid offers a free tier for new users and scales with email volume. Customers should check the Twilio SendGrid pricing page for current rates and plan options.

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
SendGrid: Is there a free tier for SendGrid?

Yes, SendGrid offers a free tier for new users to get started with email API delivery. The free plan includes limited monthly emails and is suitable for getting started with transactional email.

Source
Shortwave: What platforms does Shortwave support?

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

Source
SendGrid: What support is included with SendGrid?

SendGrid includes technical documentation and email support for users. Customers can access the help center, API documentation, and send emails to support for assistance with integration and troubleshooting.

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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