Mailjet

Provider type:   Mailjet
API Key:         your Mailjet API key
Secret Key:      your Mailjet secret key
Region:          Global (US only for an account on Mailjet's US infrastructure)
Webhook Secret:  any long random string
Webhook URL:     https://senlo:<webhook secret>@senlo.io/api/webhooks/mailjet

1. Validate your sender in MailjetCopy Anchor Link

Senlo sends from the From email you set on each trigger. Mailjet only sends from a validated sender address or domain (Account settings → Add a sender domain or address), and SPF and DKIM on that domain keep it out of spam. Until the sender is validated, sends fail at Mailjet and show FAILED in the delivery log.

2. Get the API keysCopy Anchor Link

Open Account settings → API Key Management and copy the API Key and the Secret Key. Mailjet uses the pair together; Senlo stores both encrypted.

3. Add the provider in SenloCopy Anchor Link

1. Generate a webhook secret, e.g. openssl rand -hex 32. Letters, digits, - and _ only: it goes into a URL, and Senlo refuses other characters.
2. Open Providers → Add Provider, Provider Type: Mailjet.
3. API Key and Secret Key: the pair from step 2.
4. Region: Global, unless your account was created on Mailjet's US infrastructure (then US, api.us.mailjet.com).
5. Webhook Secret: the string you generated. Click Create Provider, then select it in your workspace's Settings.

Senlo switches off Mailjet's own open and click tracking on every email: it adds its own tracking, and Mailjet's would rewrite the links a second time.

4. Connect the event webhookCopy Anchor Link

Mailjet does not sign webhooks. Its way to secure them is basic auth in the URL, and Senlo checks the password against the webhook secret.

1. In Mailjet, open Account settings → Event tracking (triggers).
2. Enter this URL for Sent, Bounce, Blocked and Spam: https://senlo:<webhook secret>@senlo.io/api/webhooks/mailjet (self-hosted: your APP_URL host instead of senlo.io). The user name can be anything.
3. Group events may be on or off: Senlo accepts both single events and groups.

Without the secret saved in Senlo, every Mailjet event is refused with 401. Mailjet retries a refused event for 24 hours and may then suspend the URL; a suspended URL has to be replaced with a different one, so save the secret in Senlo before entering the URL in Mailjet. Details: Provider webhooks.

A bounce or block suppresses the address only when Mailjet says the address is at fault and the error is permanent (user unknown, mailbox inactive, invalid domain, preblocked and the like). A full mailbox, greylisting, or a content or spam filter does not.