Catalog entry · InboxRatio Editorial

SendGrid

SendGrid is the transactional anchor of our catalog: an email API and SMTP service for developer sending, with a Marketing Campaigns product alongside. It is operated by Twilio — sendgrid.com redirected (temporarily, not permanently) to Twilio's SendGrid email API pages when we verified it in August 2026, and Twilio continues to run the brand.

At our transactional normalization volume of 50,000 emails per month, Essentials costs $19.95/month — the slider lands exactly on the 50,000-email step. There is no perpetual free plan; new accounts get a 60-day trial at 100 emails per day. Pricing checked 19 August 2026. The curve turns steeply upward past Essentials' range: $19.95/month at 50,000 emails and $34.95 at 100,000, but 500,000 emails requires Pro at $499/month on the 700,000-email step (no 500k step exists) — the most expensive functional tier in our transactional capture at that volume (multi-volume capture, 21 August 2026).

Deliverability: not yet tested. Placement figures on this site come exclusively from our own seed-list tests (how we test); once SendGrid completes a cycle, its score joins the email deliverability ranking.

From our pricing dataset

Pricing at a glance

Tier	Monthly price	What's included
Free Trial	$0/mo	—
Essentials	$19.95/mo	50,000 emails/mo
Pro	$89.95/mo	100,000 emails/mo
Premier	Custom	—

Pricing checked 19 August 2026 · monthly billing, prices as shown by the vendor.

From our feature dataset

Deliverability capabilities audit

The 17 deliverability capabilities we check every vendor for — authentication help, IP management, list hygiene, and reputation tooling. This audits what SendGrid documents; it is separate from our tested deliverability ranking.

16 of 17 documented capabilities

Yes:
SPF assistance
Domain authentication (SPF/DKIM) included on all plans incl. trial
Yes:
DKIM setup
Domain authentication SPF/DKIM included on all plans
Partial:
DMARC supportpartial
DMARC guidance in docs/deliverability guide; no DMARC monitoring product stated on fetched pages
Partial:
Dedicated IPpartial
1 dedicated IP included from Pro ($89.95+); none on Essentials
Yes:
Shared IP pools
'SendGrid's systems programmatically move accounts to different pools based on reputation' (Shared IP Pools 101)
Yes:
IP warming
IP warm-up docs ('Warm up an IP address')
Yes:
Automated warmup
'Automated warm-up allows SendGrid to automatically warmup your dedicated IP by throttling' + Automated Warmup API
Partial:
IP pools managementpartial
Shared pools SendGrid-managed by reputation; customer-managed IP pools for dedicated IPs (Pro+) documented in API
Yes:
Bounce management
Bounce and Block classifications; bounced addresses auto-logged as suppressions

Yes:
Suppression lists
'bounces and unsubscribes logged in your SendGrid account... logged under suppressions'
Yes:
Complaint management
'Twilio SendGrid automatically suppresses any addresses reporting spam through traditional feedback loops'
Yes:
Feedback loop handling
Traditional FBL complaints auto-suppressed (Gmail excepted — no traditional FBL there)
Yes:
Reputation monitoring
Reputation-based pool assignment + Deliverability Insights metrics (engagement, spam rate, bounce rate)
Not documented:
Blacklist monitoringnot documented
Blocklist monitoring product not stated in fetched sources
Yes:
Deliverability analytics
Deliverability Insights UI (Bounced & Blocked analysis)
Partial:
Deliverability consultingpartial
Expert Services for Pro and Premier accounts: reputation upkeep, content review, custom IP warm-up plans, ongoing consulting
Yes:
Domain authentication guidance
Domain authentication docs + Support Deliverability Guide

Items marked — are not documented by the vendor. In this category, silence is itself a signal. How we read vendor claims: methodology.

From our feature dataset

SendGrid feature matrix

What the vendor documents, category by category. ◐ marks tier-gated or limited capabilities; — means the vendor does not document it.

Email6 of 6 documented

Yes:
Marketing campaigns
Marketing Campaigns product — 'design, automate, and deliver impactful email marketing campaigns'
Yes:
Transactional email
'The trusted SendGrid Email API for delivery at scale'
Yes:
SMTP relay
'Twilio SendGrid Email API and SMTP service'
Yes:
Bulk sending
Volume-tiered sending 50k-5M+/mo
Yes:
Email templates
'library of responsive templates'; Dynamic templates editor incl. on trial
Yes:
Drag-and-drop editor
'intuitive drag-and-drop editor'

Automation4 of 6 documented

Yes:
Email sequences
'create time-based drip series'
Yes:
Drip campaigns
Time-based drip series
Partial:
Event-based automationpartial
'simple triggers and centralized management' — trigger types limited vs marketing-suite ESPs
Not documented:
Behavioral automationnot documented
Behavior-triggered automation not stated on fetched pages
Not documented:
Workflow buildernot documented
Visual workflow builder not stated on fetched pages
Partial:
Conditional logicpartial
Dynamic templates support conditional content (Handlebars); automation branching not stated

AI0 of 6 documented

Not documented:
AI email generationnot documented
Not stated on fetched pages
Not documented:
AI subject linesnot documented
Not stated on fetched pages
Not documented:
AI content optimizationnot documented
Not stated on fetched pages
Not documented:
AI segmentationnot documented
Not stated on fetched pages
Not documented:
AI campaign recommendationsnot documented
Not stated on fetched pages
Not documented:
AI agent / assistantnot documented
Not stated on fetched pages

Personalization3 of 4 documented

Yes:
Segmentation
'segment your recipients to deliver personalized content'
Yes:
Dynamic content
'dynamic templates'
Yes:
Personalization variables
'personalized, relevant content' via dynamic templates
Not documented:
Behavioral targetingnot documented
Not stated on fetched pages

Analytics3 of 4 documented

Yes:
Opens & clicks
'Track open rates, click-through rates'
Not documented:
Conversion trackingnot documented
Not stated on fetched pages
Yes:
Campaign reporting
'detailed statistics'
Yes:
Deliverability analytics
Deliverability Insights dashboard (Stats section, Bounced & Blocked tab)

Developer features5 of 5 documented

Yes:
API
Email API core product; API on all tiers
Yes:
SMTP API
SMTP service alongside REST API
Yes:
Webhooks
Event Webhook (1 on trial, 2 Essentials, 5 Pro)
Yes:
SDKs / client libraries
Official client libraries documented in SendGrid docs
Yes:
Public API docs
Public docs at twilio.com/docs/sendgrid

Marketing platform6 of 7 documented

No:
CRM
No CRM product — email infrastructure + campaigns only
Yes:
Signup forms
'Capture new signups, confirm opt-ins, and add them directly to lists'
Not documented:
Popupsnot documented
Not stated on fetched pages
No:
Landing pages
Not offered — not stated anywhere on marketing-campaigns page
No:
Chatbots
Not offered in SendGrid product line
Partial:
SMSpartial
SMS via separate Twilio products, not inside SendGrid
No:
Other channels
Email-only product line

E-commerce3 of 5 documented

Not documented:
Store integrationsnot documented
Not stated on fetched pages
No:
Cart recovery
Not offered — no ecommerce automation product
No:
E-commerce automation
Not offered
Not documented:
Purchase trackingnot documented
Not stated on fetched pages
No:
Product recommendations
Not offered

Features checked 21 August 2026 · from vendor documentation and official feature pages.

Captured from the vendor website

SendGrid in screenshots

SendGrid website: homepage hero section — SendGrid page on twilio.com (sendgrid.com redirects here), August 2026
Source: vendor website · 21 August 2026

SendGrid website: product/features section — SendGrid page section on email scale and deliverability with product screenshots
Source: vendor website · 21 August 2026

Independent review platforms — shown as context; never part of our measured Deliverability Score

What users say

Capterra

4.2/5

753 reviews

Checked 21 August 2026

Trustpilot

1.2/5

608 reviews

Checked 21 August 2026

Weighted average 2.9/5 across 1,361 reviews.Substantial review base

Shown as independent context — never part of our measured Deliverability Score

What others say about deliverability

EmailDeliverabilityReport — SendGrid deliverability reportExpert study1 July 2026
Across 75,883 test emails, SendGrid achieved 76.99% inbox placement with 20.62% in spam and 2.40% missing, a mid-tier result (score 89/100) behind top performers like Sarbacane (92) and Klick-Tipp (91).
MailReach — SendGrid emails going to spamArticle1 July 2026
Deliverability-tool vendor's diagnostic guide citing a 2026 report that ~17.47% of SendGrid emails land in spam and 3.71% fail delivery, and noting SendGrid's default link tracking rewrites URLs to sendgrid.net, breaking DMARC alignment and reducing trust.
The Digital Bloom — B2B Email Deliverability Report 2025Expert study1 November 2025
Independent B2B benchmark (Nov 2025) measures SendGrid at 35.31% inbox placement in Q1 2025, down 9.99 pp year-over-year, mid-pack among the six ESPs tracked.
Krebs on Security — Sendgrid Under Siege from Hacked AccountsArticle1 August 2020
Reports a surge of hacked SendGrid accounts pumping phishing and malware through SendGrid's trusted infrastructure — anti-spam firm Invaluement's CEO said 'there's not even a close second' among providers and launched a dedicated blocklist for compromised SendGrid accounts, while experts called SendGrid's lack of mandatory 2FA 'ludicrous.'
Hacker News discussion of the Krebs SendGrid articleForum1 August 2020
Mail admins report blocking SendGrid's entire IP ranges due to phishing volume ('my university straight up blocks any mail coming from a SendGrid IP'), months-long spam-folder placement for shared-IP customers, and blocked mail even after moving to dedicated IPs with correct DKIM/SPF/DMARC.

Same primary category, from our catalog

Alternatives to SendGrid

Brevo

Email marketing plus transactional email and SMTP relay on one platform; the European demand anchor in our catalog.

View profile →

Mailjet

Email marketing with transactional API and SMTP sending, owned by Sinch; most of its measured demand sits in Europe.

View profile →

Mailgun

$$$

Transactional email API and SMTP relay for developer sending, owned by Sinch.

View profile →

Selected by catalog rule — same primary category, same depth tier first, then catalog demand order. Never hand-picked.

Generated from our datasets — every value verified and dated

Frequently asked questions

What is SendGrid?

SendGrid is a transactional email service in the InboxRatio catalog, also covering smtp provider, developer email infrastructure and email marketing. Its regional focus is Global.

How much does SendGrid cost?

Paid SendGrid plans start at $19.95/mo (Essentials tier), prices as shown by the vendor, last checked 19 August 2026.

Does SendGrid document its deliverability capabilities?

SendGrid documents 16 of the 17 deliverability capabilities we audit every vendor for (authentication help, IP management, list hygiene, reputation tooling). This audits what the vendor documents — it is separate from our measured Deliverability Score, and undocumented items are themselves a signal. How we read vendor claims.

What do users say about SendGrid?

Across 1,361 reviews on Capterra and Trustpilot, SendGrid averages 2.9/5 (review-count-weighted). User ratings are shown as context only — never part of our measured Deliverability Score.

Has SendGrid's deliverability been tested by InboxRatio?

Not yet — SendGrid is in the queue for Cycle 0, our first seed-list test cycle across the whole catalog. We publish measured inbox-placement results only after a completed cycle, so this profile carries no Deliverability Score until then. How we test.

What are the main SendGrid alternatives?

From our catalog, the closest alternatives are Brevo, Mailjet and Mailgun — services sharing SendGrid's primary category (transactional email), selected by a neutral catalog rule, never hand-picked.