Comparison
Exclaimer alternative from Germany — SignatureHub comparison
Exclaimer is the best-known vendor globally — focused on Microsoft 365 and Google Workspace, UK-based. SignatureHub adds Postfix/Plesk support, German hosting and a real reseller model.
SignatureHub advantages
- Hosting in Germany vs. UK / global Azure regions
- Postfix, Plesk, sendmail natively supported
- Works without any mail server of your own: point the mail client straight at mx.signaturehub.de:2587 (STARTTLS) with per-employee credentials — Exclaimer requires Microsoft 365 or Google Workspace
- Reseller programme with consolidated invoicing
- Self-service signup without a sales call
- Published pricing and volume tiers from 0.85 € / user / month (Starter billed annually), free plan for up to 3 users
Frequently asked questions
- Do I need Microsoft 365 to use SignatureHub instead of Exclaimer?
- No. There are three ways to connect: Microsoft 365 via outbound and inbound connectors, your own mail server (Postfix, Plesk, Exchange on-premises) as a smarthost to mx.signaturehub.de:2587, or — with no mail server at all — the mail client pointed directly at the same endpoint using per-employee credentials.
- Does this work if our mailboxes are hosted at STRATO, IONOS or All-Inkl?
- Yes. Every employee gets their own SMTP credentials and enters mx.signaturehub.de, port 2587, STARTTLS as the outgoing mail server in Outlook, Apple Mail, iPhone, Android or Thunderbird. Incoming mail stays with the existing provider; only the sending path runs through SignatureHub. Credentials are bound to that employee's own addresses.