| Price from | $10/mo | $1/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| macOS | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | — | Yes |
| Plans published | 3 | 3 |
| Spec score · Email Signature Management Software | 7.9 (#24) | 8.3 (#12) |
| Deployment | Administrators can deploy signatures to Gmail across the organization with one click, without requiring employees to install anything. | Deployment options include server-side signature injection, an Outlook add-in, and Gmail API integration; multiple methods can be used together. |
| Security | Lastline says it is SOC 2 Type II certified, encrypts data in transit and at rest, and does not read email content. | Opensense says its SOC 2 Type II attestation covers Security, Confidentiality, and Availability and is completed annually. |
| Support | All plans include email support; paid plans include priority support, and the maker offers setup documentation and video tutorials. | The pricing page lists US-based support, a dedicated customer success manager and technical contact, and 24x7 priority phone support. |
