Below is a list of companies that use Twilio SendGrid to send emails. The list is based on the volume of emails sent by each company using Twilio’s platform. We used Cisco’s Talos data for the ranking.
List of Popular Companies using Twilio (formerly SendGrid)
| Usage Rank | Company Name | Domain Used to Send Email | Company Domain |
|---|---|---|---|
| 1 | Klaviyo | klaviyomail.com | klaviyo.com |
| 2 | Shopify | shopify.com | shopify.com |
| 3 | TikTok | tiktok.com | tiktok.com |
| 4 | ConvertKit | convertkit.com | Kit.com |
| 5 | Mercado Libre | mercadolibre.com | mercadolibre.com |
| 6 | Insider | useinsider.email | useinsider.com |
| 7 | WeTransfer | wetransfer.com | wetransfer.com |
| 8 | Eclub | eclub.se | eclub.se |
| 9 | eBay | ebay.com | ebay.com |
| 10 | Zoom | zoom.us | zoom.us |
| 11 | Nextdoor | nextdoor.com | nextdoor.com |
| 12 | Booking.com | booking.com | booking.com |
| 13 | OpenAI | openai.com | openai.com |
| 14 | Autodesk | autodesk.com | autodesk.com |
| 15 | Kleinanzeigen | kleinanzeigen.de | kleinanzeigen.de |
| 16 | 3CX | 3cx.net | 3cx.com |
| 17 | eMAG | emag.ro | emag.ro |
| 18 | Airbnb | airbnb.com | airbnb.com |
| 19 | Etsy | etsy.com | etsy.com |
| 20 | Intuit | intuit.com | intuit.com |
| 21 | Willhaben | willhaben.at | willhaben.at |
| 22 | Drip | dripemail2.com | drip.com |
| 23 | Spotify | spotify.com | spotify.com |
| 24 | Anthropic | anthropic.com | anthropic.com |
| 25 | Wix | ascendbywix.com | wix.com |
| 26 | NinjaRMM | ninjarmm.com | ninjarmm.com |
| 27 | Agoda | agoda.com | agoda.com |
| 28 | Conrad | conrad.de | conrad.com |
| 29 | Walmart | walmart.com | walmart.com |
| 30 | Discord | discord.com | discord.com |
| 31 | Law360 | law360.com | law360.com |
| 32 | Flodesk | flodesk.com | flodesk.com |
| 33 | Procore | procoretech.com | procore.com |
| 34 | Action Network | actionnetwork.org | actionnetwork.org |
| 35 | BizHint | bizhint.jp | bizhint.jp |
| 36 | Statuspage | statuspage.io | statuspage.io |
| 37 | Talenta | talenta.co | talenta.co |
| 38 | Pico | picovr.com | picovr.com |
| 39 | Beehiiv | beehiiv.com | beehiiv.com |
| 40 | Hepsiburada | hepsiburada.com | hepsiburada.com |
| 41 | Addi | addi.com | addi.com |
| 42 | Geotab | mygeotab.com | geotab.com |
| 43 | Medium | medium.com | medium.com |
| 44 | StockX | stockx.com | stockx.com |
| 45 | Maersk | maersk.com | maersk.com |
| 46 | GitHub | github.com | github.com |
| 47 | Trustpilot | trustpilotmail.com | trustpilot.com |
| 48 | GetYourGuide | getyourguide.com | getyourguide.com |
| 49 | DocPlanner | docplanner.com | docplanner.com |
| 50 | Connectif | connectif.io | connectif.io |
| 51 | Gainsight | gainsightapp.com | gainsight.com |
| 52 | Skool | skool.com | skool.com |
| 53 | Guest Message | guest-message.com | guest-message.com |
| 54 | 11880 | 11880.com | 11880.com |
| 55 | GLS | gls-pakete.de | gls-group.com |
| 56 | Lenovo | lenovo.com | lenovo.com |
| 57 | GPSH | gpshp.in | gpshp.in |
| 58 | AppFolio | appfolio.com | appfolio.com |
| 59 | Fotocasa | fotocasa.es | fotocasa.es |
| 60 | Primerjam | primerjam.si | primerjam.si |
| 61 | MyHeritage | myheritage.com | myheritage.com |
| 62 | FareHarbor | fareharbor.com | fareharbor.com |
| 63 | ByteDance | bytedance.com | bytedance.com |
| 64 | CoverManager | covermanager.com | covermanager.com |
| 65 | Skyscanner | skyscanner.com | skyscanner.com |
| 66 | Calendly | calendly.com | calendly.com |
| 67 | Bandcamp | bandcamp.com | bandcamp.com |
| 68 | Kartra | kartra.net | kartra.com |
| 69 | Speedy | speedy.bg | speedy.bg |
| 70 | PR Newswire | prnewswire.com | prnewswire.com |
| 71 | BCP (Banco de Crédito) | notificacionesbcp.com.pe | bcp.com.pe |
| 72 | Subito | subito.it | subito.it |
| 73 | Box | box.com | box.com |
| 74 | SpaceX | spacex.com | spacex.com |
| 75 | Monday.com | monday.com | monday.com |
| 76 | Connect2Field | connect2field.com | connect2field.com |
| 77 | Bloom & Wild | bloomandwild.com | bloomandwild.com |
| 78 | SHSPMA | shspma.com | shspma.com |
| 79 | Epsilon | epsilon-singularlogic.eu | epsilon.com |
| 80 | Iconstruye | iconstruye.com | iconstruye.com |
| 81 | Einforma | einforma.com | einforma.com |
| 82 | Canva | canva.com | canva.com |
| 83 | Sage Communications | sagecommunicationsc2c.com | sagecommunications.com |
| 84 | Asaas | asaas.com.br | asaas.com.br |
| 85 | Seek | seek.com | seek.com |
| 86 | Udemy | udemymail.com | udemy.com |
| 87 | Austrian Post | post.at | post.at |
| 88 | Banco Pichincha | pichincha.com | pichincha.com |
| 89 | Neogrid | neogrid.com | neogrid.com |
| 90 | GEP | gep.com | gep.com |
| 91 | Digitec Galaxus | digitecgalaxus.ch | digitecgalaxus.ch |
| 92 | Oriental Trading | oriental-trading.com | oriental-trading.com |
| 93 | Alignable | alignable.com | alignable.com |
| 94 | No-IP | noip.com | noip.com |
| 95 | PC Componentes | pccomponentes.com | pccomponentes.com |
| 96 | Sprinklr | sprinklr.com | sprinklr.com |
| 97 | Fantia | fantia.jp | fantia.jp |
| 98 | Temu | temu.com | temu.com |
| 99 | Modlily | modlily.com | modlily.com |
Source: Cisco’s Talos (as of August 2026).
About Twilio
Twilio SendGrid, formerly known as SendGrid, is an email delivery and SMTP platform. Most of the companies listed above rely on its email delivery API to send millions of emails at scale. It is widely recognized as one of the most established and trusted SMTP service providers in the email industry.
Learn more about Twilio features and Integrations.
