| 2024-05-20T23:08:30.653 | 2024-05-20T00:00:00 | 2025-06-16T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2024-05-20T23:08:30.227 | 2024-05-20T00:00:00 | 2025-06-16T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2023-05-18T22:33:36.149 | 2023-05-18T00:00:00 | 2024-06-17T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2023-05-18T22:33:35.326 | 2023-05-18T00:00:00 | 2024-06-17T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2023-02-21T02:31:20.518 | 2023-02-21T01:31:20 | 2023-05-22T01:31:19 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2023-02-21T02:31:20.176 | 2023-02-21T01:31:20 | 2023-05-22T01:31:19 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2022-10-27T01:38:29.581 | 2022-10-27T00:38:28 | 2023-01-25T00:38:27 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2022-10-27T01:38:28.936 | 2022-10-27T00:38:28 | 2023-01-25T00:38:27 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2022-08-15T21:50:50.518 | 2022-08-15T00:00:00 | 2023-05-30T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2022-08-15T21:50:49.509 | 2022-08-15T00:00:00 | 2023-05-30T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2022-06-01T05:21:33.633 | 2022-06-01T04:21:33 | 2022-08-30T04:21:32 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2022-06-01T05:21:33.398 | 2022-06-01T04:21:33 | 2022-08-30T04:21:32 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2022-02-15T02:38:27.558 | 2022-02-15T01:38:27 | 2022-05-16T01:38:26 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2022-02-15T02:38:27.454 | 2022-02-15T01:38:27 | 2022-05-16T01:38:26 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2021-11-11T04:52:01.471 | 2021-11-11T03:52:00 | 2022-02-09T03:51:59 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2021-11-11T04:52:00.88 | 2021-11-11T03:52:00 | 2022-02-09T03:51:59 | sms-yifeidev.smtp2go.com | sms-yifeidev.smtp2go.com | C=US, O=Let's Encrypt, CN=R3 |
| 2021-09-15T00:05:24.44 | 2021-09-08T00:00:00 | 2022-09-08T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, CN=RapidSSL TLS DV RSA Mixed SHA256 2020 CA-1 |
| 2021-09-08T11:57:01.84 | 2021-09-08T00:00:00 | 2022-09-08T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, CN=RapidSSL TLS DV RSA Mixed SHA256 2020 CA-1 |
| 2020-09-12T23:03:15.786 | 2020-09-09T00:00:00 | 2021-09-10T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, CN=RapidSSL TLS DV RSA Mixed SHA256 2020 CA-1 |
| 2020-09-09T11:55:34.548 | 2020-09-09T00:00:00 | 2021-09-10T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, CN=RapidSSL TLS DV RSA Mixed SHA256 2020 CA-1 |
| 2020-05-30T23:21:48.881 | 2020-05-30T00:00:00 | 2022-09-01T00:00:00 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2020-05-30T23:21:48.339 | 2020-05-30T00:00:00 | 2022-09-01T00:00:00 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2019-08-15T12:22:41.067 | 2019-08-13T00:00:00 | 2020-09-11T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL RSA CA 2018 |
| 2019-08-13T11:56:39.436 | 2019-08-13T00:00:00 | 2020-09-11T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL RSA CA 2018 |
| 2019-01-15T18:54:52.557 | 2019-01-15T00:00:00 | 2021-01-13T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2019-01-15T18:54:37.755 | 2019-01-15T00:00:00 | 2021-01-13T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo RSA Domain Validation Secure Server CA |
| 2019-01-14T01:33:33.704 | 2019-01-14T00:00:00 | 2021-01-13T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO ECC Domain Validation Secure Server CA |
| 2019-01-14T01:33:19.018 | 2019-01-14T00:00:00 | 2021-01-13T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO ECC Domain Validation Secure Server CA |
| 2018-07-18T21:23:44.943 | 2018-07-16T00:00:00 | 2019-08-15T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL RSA CA 2018 |
| 2018-07-16T11:55:16.698 | 2018-07-16T00:00:00 | 2019-08-15T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL RSA CA 2018 |
| 2018-02-14T02:09:49.261 | 2018-02-06T00:00:00 | 2019-01-27T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL RSA CA 2018 |
| 2018-02-06T12:01:02.939 | 2018-02-06T00:00:00 | 2019-01-27T12:00:00 | *.smtp2go.com | *.smtp2go.com | C=US, O=DigiCert Inc, OU=www.digicert.com, CN=RapidSSL RSA CA 2018 |
| 2017-07-21T20:46:57.216 | 2017-07-18T00:00:00 | 2018-07-18T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=US, O=GeoTrust Inc., CN=RapidSSL SHA256 CA |
| 2017-07-18T02:33:31.177 | 2017-07-18T00:00:00 | 2018-07-18T23:59:59 | *.smtp2go.com | *.smtp2go.com | C=US, O=GeoTrust Inc., CN=RapidSSL SHA256 CA |
| 2015-01-27T15:00:40.881 | 2015-01-25T01:32:00 | 2019-01-26T09:59:55 | *.smtp2go.com | *.smtp2go.com | C=US, O=GeoTrust Inc., CN=RapidSSL SHA256 CA - G3 |