Email Detective — ESP Tracker

by EmailTooltester

Get Email DetectiveDetect any senderright in your inbox Gmail Outlook

Email service providers used by Telecom brands

Real-world data from emails received by Email Detective users. Brand counts include only senders that have crossed our visibility threshold.

70Brands tracked

10ESPs detected

Top ESPs in Telecom

SendGrid

22

Amazon SES

17

Salesforce MC

12

8

HubSpot

4

SparkPost

3

Mailchimp

3

Smaily

3

Inxmail

2

Selligent

2

Brands in Telecom

Zoom SendGrid

969 obs

Modemobile CleverTap

52 obs

Twilio SendGrid

47 obs

Clientesiberdrola Mailjet

43 obs

Smarty SparkPost

42 obs

Royalmail Amazon SES

41 obs

Movistar HCL Domino

31 obs

Ring SendGrid

29 obs

Yodelmobile HubSpot

20 obs

Edfenergy Braze

18 obs

Verizon Adobe Campaign

17 obs

Agl Amazon SES

16 obs

Dialpad Amazon SES

14 obs

T Mobile SendGrid

13 obs

Vibers Amazon SES

13 obs

Ringcentral SendGrid

13 obs

Duonet Mailchimp

13 obs

Mintmobile Braze

12 obs

Telia Salesforce MC

11 obs

Xfinity Adobe Campaign

11 obs

Airalo SendGrid

10 obs

Pepephone SendGrid

9 obs

Verizonwireless Marketo

9 obs

Dish SendGrid

9 obs

Octopusenergy SendGrid

8 obs

Dukeenergy Acoustic

8 obs

Congstar Inxmail

8 obs

Holaluz Mailchimp

7 obs

Endesaclientes Salesforce MC

7 obs

Wisephone Klaviyo

7 obs

Consumersenergy SendGrid

7 obs

Optus Salesforce MC

7 obs

Uinet SendGrid

7 obs

Strongvpn SendGrid

6 obs

Duke Energyalert Acoustic

6 obs

Nationalgridus Salesforce MC

6 obs

Three SendGrid

6 obs

Sdge SendGrid

6 obs

Odido Amazon SES

6 obs

Tescomobile Selligent

5 obs

Elisa Smaily

5 obs

Cox Adobe Campaign

5 obs

Xcelenergy Salesforce MC

5 obs

Dein Sky Salesforce MC

5 obs

1&1 Inxmail

4 obs

Crmail Amazon SES

4 obs

Fpl Adobe Campaign

4 obs

Zone Smaily

4 obs

Tele2 Smaily

4 obs

Boost Salesforce MC

4 obs

Serwersms EmailLabs

4 obs

Vonage Salesforce MC

3 obs

Ee Amazon SES

3 obs

Sinch Mailgun

3 obs

Eero Salesforce MC

3 obs

Correos Amazon SES

3 obs

Affinitywater Klaviyo

3 obs

Lebara Adobe Campaign

3 obs

Engie Salesforce MC

3 obs

Power SendGrid

3 obs

Fisionfiberbyhotwire HubSpot

2 obs

Gfiber Salesforce MC

2 obs

Japan Wireless MailerLite

2 obs

Giffgaff Adobe Campaign

2 obs

Ignitis MailerLite

2 obs

Aircall HubSpot

2 obs

Dteenergy SendGrid

2 obs

Ipv4 Amazon SES

2 obs

Tagmobile Amazon SES

2 obs

Acall SendGrid

2 obs

Anonymous data crowdsourced from Email Detective users. We collect only domain, esp, day — no personal data, no user identifiers. Back to all brands.