SMTP Relay: an SMTP server for the automatic e-mails of your site, system or device

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The short answer: SMTP Relay is our SMTP server, used by your website, your business system or a device to send its automatic e-mails: order confirmations, invoices, password resets, alerts. The program connects with a username and password, over an encrypted connection, and sends from a domain of yours that you have verified. You do not need to change your code: you only swap the SMTP server details.

Who uses it, and for what

What sends Examples
Websites and WordPress Contact forms, order confirmations, password reset e-mails.
Applications in PHP, Laravel, Node.js or Python New user sign-ups, notifications, reports.
ERP, billing software and your own servers Invoices, statements, system alerts.
Printers and devices Scan to e-mail, error or supplies alerts: equipment that only knows how to speak SMTP.

How it works, in three steps

1 Verify the domain you will send from, in the Email Center, with the SPF, DKIM and DMARC records.
2 Create an SMTP credential for each program and store the password, which is shown only once.
3 Fill in the program with the server (shown in the Email Center), port 587 with STARTTLS or 465 with TLS, the username and the password.

The full walkthrough is in getting started with SMTP Relay.

What you get

What With SMTP Relay
Connection Encrypted: STARTTLS on port 587 or TLS on port 465.
Credentials One for each website or system. Revoke only the one you stop using; the others keep sending.
Log Every e-mail sent over SMTP shows up in the Email Center log, with its status and statistics. It is the same log as the API.
Blocked list Addresses that bounced or complained do not receive again, which protects your domain reputation.
Sender Any address on a domain you have verified.
It is not a mailbox, and not a newsletter service. SMTP Relay only sends, and only automatic e-mails. For everyday mailboxes with webmail and Outlook there is Professional E-mail; for campaigns, E-mail Marketing. See what SMTP Relay is not for.
Building a new system? The e-mail API sends through the same servers, with the same domains and the same log, and adds templates with variables. See using SMTP Relay and the API together.

SMTP Relay is priced per e-mail sent, with a volume discount. Tell us how many e-mails you send each month and we will prepare your proposal.

Ask for a proposal

SEE ALSO

Getting started with SMTP Relay: verify the domain, create a credential, connect your program

SMTP Relay in any program: what Host, Port, Encryption, Username and From mean on each screen

How SMTP Relay is priced: paying per e-mail sent, volume discounts and asking for a proposal

What SMTP Relay is not for: newsletters and everyday company mailboxes, and what to use instead

Sending e-mail by SMTP or through an e-mail API: which suits your application

SPF, DKIM and DMARC: why your e-mail lands in spam

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