| Price from | $10/mo | $2/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 3 | 4 |
| Spec score · Email Signature Management Software | 7.9 (#24) | 8.3 (#11) |
| Campaigns | Campaign banners can be scheduled and targeted by team, and Lastline says it tracks campaign clicks. | Email signatures can carry targeted marketing banners, internal campaigns, surveys, and A/B tests with performance tracking. |
| Directory sync | Lastline imports employee details from Google Workspace Directory and automatically updates signature data when directory details change. | It syncs with Microsoft Entra ID and Google Workspace directories to keep contact details current. |
| Product | Lastline manages branded email signatures for Google Workspace teams from a central dashboard. | Letsignit centralizes creation, management, and deployment of company email signatures. |
| Security | Lastline says it is SOC 2 Type II certified, encrypts data in transit and at rest, and does not read email content. | Letsignit states it is ISO 27001 and ISO 27018 certified and GDPR compliant. |
| Support | All plans include email support; paid plans include priority support, and the maker offers setup documentation and video tutorials. | The pricing page lists a dedicated Customer Success and Support team of 16 experts for Email signatures & vCards and Slides. |
