“The reliable email sending services that's quite awesome”
Transactional EmailMaker says so +1 · source ↗
SendGrid
Email platform (by Twilio) for both transactional and marketing email.
Works with AI agents:llms.txtBuilt into ReplitSendGrid, owned by Twilio, sends application email through its Email API and SMTP service, and marketing email through Marketing Campaigns, all in one account.
You authenticate to the v3 REST API with an API key, using the official libraries for C#, Go, Java, Node.js, PHP, Python or Ruby, or send over SMTP with an X-SMTPAPI header carrying per-message instructions. Dynamic templates are stored in SendGrid and filled with your data at send time. Delivery events go to your app through the Event Webhook. To receive mail, you point an MX record at mx.sendgrid.net, and Inbound Parse posts each parsed message and its attachments to a URL you choose.
Useful for a small team: an Email Activity Feed to trace each message's delivery, with search and CSV export; subusers to separate statistics and permissions, for example transactional and marketing mail (up to 15 on Pro and Premier); and, on Pro, dedicated IPs and single sign-on.
Several team features (subusers, SSO, dedicated IPs) start at the Pro plan, not the entry plan. Searchable activity history beyond the default window requires a paid add-on, which extends it to 30 days, and all Email Activity data is stored in the United States.
Where it fits
How SendGrid itself is built
8 tools, from its own code, website and Product Hunt page.
Who uses it
1,061 makers' products, each linked to the source that shows it, and 26 open-source projects that declare it in their code.
“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“We use Sendgrid for all of our onboarding, transactional, and marketing emails.”
Transactional EmailMaker says so +1 · source ↗“But instead, I integrate with Sendgrid and get triple the amount of emails sent for $800 per month.”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (trello firebase email)”
Transactional EmailMaker says so +1 · source ↗“I send newsletters using Mailerlite and transactional emails using SendGrid ’s fantastic dynamic templates feature.”
Transactional EmailMaker says so +1 · source ↗“Google Cloud, Stripe , Chartmogul , Slack , Sendgrid , ClickUp and a ton more.”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (trello email)”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (platform trello email)”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (trello email)”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“…eetings, and docs Slack and Loom for internal communication Tawk.to for customer chatbots Sendgrid for mass email comms Twitter, Facebook, and LinkedIn for social media What have been the…”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (trello email)”
Transactional EmailMaker says so +1 · source ↗“Sendgrid : Email delivery, email tracking, marketing automation.”
Transactional EmailMaker says so +1 · source ↗“SendGrid ensures your emails land in the inbox, every time.”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“We use Pipedrive , Intercom , and Sendgrid to manage relationships and stay in touch with our users.”
Transactional EmailMaker says so +1 · source ↗“Listed in their tool stack on Starter Story (email)”
Transactional EmailMaker says so +1 · source ↗“Now for the tools, here on ADYOUNEED we use ClickUp pretty much for all the task management and sprints, Stripe for payment, Segment for tracking, and Sendgrid for emails.”
Transactional EmailMaker says so +1 · source ↗Open source: a project that declares SendGrid as a dependency in its public code — verifiable, but not necessarily a live product.
What makers say
34 makers on why they use SendGrid, in their own words on Product Hunt.
Previously used a different service, but started having problems with landing in spam boxes. Moved to Sendgrid and it's inbox deliverability rate has been amazing. Little bit more expensive, but for important emails, the cost is worth it.
RosperSep 2026 ↗…ure: Amazon Web Services (AWS) , Google Analytics , Qovery , and MongoDB Email Marketing: Sendgrid Social Media: Buffer for automation and Canva for design Freelancer tools: Fiverr Interna…
…eetings, and docs Slack and Loom for internal communication Tawk.to for customer chatbots Sendgrid for mass email comms Twitter, Facebook, and LinkedIn for social media What have been the…
…downside is that it’s much harder to implement than you might think! We’ve since moved to Sendgrid for delivery, which takes a lot of pain out of the process but it is expensive.…
Now for the tools, here on ADYOUNEED we use ClickUp pretty much for all the task management and sprints, Stripe for payment, Segment for tracking, and Sendgrid for emails.
Loved and watch-outs
Themes that recur in makers' words and Hacker News comments, each linked to what it summarises, with how Product Hunt tags its reviews.
- Deliverability is poor, and its internal reputation score can look great while Gmail and Microsoft reputation tanks. HNHN 2HN 3HN 4
- Since the Twilio acquisition the free plan was retired and the product feels neglected. HNHN 2HN 3
- Its network carries a lot of spam, and phishing emails that pose as SendGrid are common. HNHN 2HN 3HN 4
- Accounts can be terminated or blacklisted with little explanation. HNHN 2
Reliability and open issues
- minor Silent Network Authentication (SNA) Failure Increase on AT&T in United States Oct 2026
- minor SMS Delivery Delays from a Subset of Twilio Phone Numbers to Vodafone Netherlands Oct 2026
- minor SMS Delivery Delays from a Subset of Twilio Phone Numbers to Jio India Oct 2026
Who switches
Public pull requests on GitHub since Oct 2024 whose title says "X to Y" — real code changes moving a project from one tool to another, by developers in general. Open a row to see the pull requests.
Resend → SendGrid17 PRs
- Add duplicate-safe Resend to SendGrid failoverNimoRotem/catchall-mail-stack · 2026-08-13
- Switch OTP email delivery from Resend to SendGridPriyanshi-06/DevInsight · 2026-08-08
- Migrate outbound email from Resend to SendGrid (Single Sender Verification)ko2527600/Accounting-Platform · 2026-07-29
- Switch email provider from Resend to SendGridSTYLEBOOK-TEAM/STYLEBOOK · 2026-07-27
- feat(email): switch registration email from Resend to SendGridbatashof/trimly · 2026-07-18
- feat: migrate from Resend to SendGrid API and cleanup unused Server f…indiatradeoverseas/IndiaTradeOverseas · 2026-07-16
- feat(email): swap digest provider from Resend to SendGridJonasDwellsy/pm-intel · 2026-07-13
- Switch transactional email delivery from Resend to SendGridkdeyarmin/PennTrain · 2026-07-05
- Switch from Resend to SendGrid for email deliverynauticaatins-debug/kbn-admin · 2026-06-18
- Switch transactional email from Resend to SendGridray-amjad/vidtempla · 2026-04-24
Amazon SES → SendGrid4 PRs
- Newsletter Studio: a listmonk-style campaign engine, with an Amazon SES transport to replace SendGridShawnDaPrawn/NavigateWealth · 2026-08-29
- Migrate email service from AWS SES to SendGridmaronnjapan/maronn-household · 2026-01-28
- changed from ses to sendgridTushar-cloud-org/serverless · 2025-11-08
- update: use ses to replace sendGridice-solution/eventCheckinSystem · 2025-07-06
Mailgun → SendGrid3 PRs
- [Chore] switch from MailGun to SendGridlnflash/flash · 2025-09-15
- Feat(email): Migrate from Mailgun to SendGridauhren1992/Redsracing · 2025-09-10
- Migrate email service from Mailgun to SendGridauhren1992/Redsracing · 2025-09-08
SendGrid → Resend60 PRs
- Remove SendGrid integration and migrate to Resendnaaman10/bft-parents · 2026-09-27
- Switch email logs from SendGrid to Resendnaaman10/brighterfutures · 2026-09-27
- Reactor/migrate sendgrid to resendTranXuanAnh930/i-dolly-backend · 2026-09-21
- feat(notifications): migrate email delivery from SendGrid to Resendpongpanot0/lawfirmline · 2026-09-14
- Switch email delivery from SendGrid to Resendjorisvanmens/jorisvanmens.github.io · 2026-08-27
- feat(notifications): migrate email delivery system from SendGrid to Resendbillnapier/bellmon · 2026-08-24
- Switch contact mail payload from SendGrid to Resend shapespacedogstudios/spacedog-nextjs · 2026-08-05
- fix(onboarding): migrate onboarding-critical email from SendGrid to Resendmrantionehart/agents-portal · 2026-07-22
- feat: migrate transactional email from SendGrid to ResendJgandara24/sermon-clipper · 2026-07-18
- Switch transactional email from SendGrid SMTP to Resend APIgogogo-hash/packlight · 2026-07-16
SendGrid → Amazon SES12 PRs
- Sendgrid to ses cost reductioncm-igarashi-ryosuke/zenn-connect · 2026-09-11
- Migrate email service from SendGrid to Amazon SESindentlabs/notebook · 2026-08-06
- Migrate email from SendGrid to Amazon SES (SMTP)wrenchtokeys/rswr_systems · 2026-07-10
- feat(email): migrate cookiecutter default from SendGrid to AWS SEShmesfin/my-django-cookiecutter · 2026-05-19
- Switch email from SendGrid to Amazon SES with redesigned templateskresnajenie/merfisheyes · 2026-03-29
- Migrate email service from SendGrid to AWS SESk2bg-technology/k2bg-branding · 2026-02-03
- Migrate email service from SendGrid to AWS SEShackforla/food-oasis · 2026-01-13
- Migrate email delivery from SendGrid to AWS SESGratheon/user-cycle · 2025-09-17
- update: migrate email sending from SendGrid to Amazon SESnerubia/kh360-nodejs · 2025-08-20
- update: migrate email sending from SendGrid to Amazon SESnerubia/kh360-nodejs · 2025-08-05
SendGrid → Mailgun11 PRs
- Migrate email from SendGrid to MailgunAbinashi7/helpdesk · 2026-08-02
- Switch from SendGrid to Mailgun for email deliveryran1-987/py-service · 2026-07-19
- Switch email delivery from SendGrid SMTP to Mailgun APISplitTime/OpenSplitTime · 2026-04-10
- Switch email backend from SendGrid to Mailgunrlronan/ghp-measurement · 2026-04-06
- Switch notify.py from Sendgrid API to Mailgungreenberga/uploader · 2026-01-05
- Change the mail sending implementation SendGrid to MailGundertinfo/dertinfo-api · 2025-12-07
- feat(mail): migrate from SendGrid to Mailgun, update env/config, and …Nexacore-Org/NexaFx-backend · 2025-09-27
- switch mailer from sendgrid to mailgun since free plans from sendgrid terminatedxjlin0/attendees32 · 2025-09-06
- Change SMTP email server from SendGrid to Mailgun and update Django versionFelidaeFundConservation/wildepod.org · 2025-07-31
- Switch email adapter from SendGrid to Mailgunhuddlz-hq/huddlz · 2025-07-24
SendGrid → Postmark6 PRs
- fix: migrate from SendGrid to Postmark (v0.3.23)nomadkaraoke/karaoke-decide · 2026-05-18
- Update email service from SendGrid to Postmark and remove related doc…Webcap/wiznote · 2025-11-04
- Release sendgrid to postmark swapClaudia413/tjp-website · 2025-08-19
- swap sendgrid to postmarkClaudia413/tjp-website · 2025-08-09
- Switch from SendGrid to Postmarkdanstewart/log-my-time · 2025-05-28
- [sendgrid] back to postmarkinstantdb/instant · 2025-04-03
Alternatives to SendGrid
All alternatives by situation →Questions makers ask about SendGrid
Which languages have official SDKs?
SendGrid maintains libraries for C#, Go, Java, Node.js, PHP, Python and Ruby, plus helpers for building SMTP API headers. source ↗
Can SendGrid receive and parse incoming email?
Yes. With Inbound Parse you point an MX record for a dedicated hostname at mx.sendgrid.net, and SendGrid posts each message's contents and attachments to your URL. source ↗
Can I keep transactional and marketing sending separate?
Yes, with subusers, each with its own permissions, credit limits and statistics. They need a Pro or Premier API plan or an Advanced Marketing Campaigns plan, with up to 15 per account. source ↗
How far back can I look up what happened to an email?
The Email Activity Feed shows recent events per message. The Email Activity history add-on extends this to 30 days and API access, and the data is stored in the US. source ↗
Which plan do I need for SSO or dedicated IPs?
Pro, which adds dedicated IPs, subuser management, single sign-on and email testing on top of the Essentials plan. source ↗
Can I use my own templating instead of SendGrid's?
Yes. Dynamic templates are optional, and if you render email yourself you can still insert per-recipient data with substitution tags. source ↗
Is SendGrid free?
No permanent free tier; paid use starts at $19.95/mo. source ↗
Is SendGrid open source or self-hostable?
Not open source, and hosted only.
Can AI coding agents work with SendGrid?
It serves an llms.txt docs index; Replit set it up natively.
Who uses SendGrid?
1061 makers' products we track, each with a source, and 26 open-source projects declare it in their code. source ↗