Source
Sending API, SMTP & developer experience — found from sitemap — MailerSend
Checked for MailerSend on 1 Nov 2026
- Page
- https://developers.mailersend.com/api/v1/email/smtp-relay
- Checked
- 1 Nov 2026, 09:36 UTC
- How we may use it
- Public page, crawling permitted
Technical details
- type
- page
- http status
- 200
- content hash
- sha256:7fe37cea69b9c0837ae78d4a3708996063e601274cf24bec82ba68d368fa2e29
- permission
- robots_ok
- screenshot
- Screenshot on file (internal exhibit, not published)
Cited by
Facts read from this source
-
Smtp relay Report an error
“Our SMTP relay service takes care of your email delivery so you don’t have to manage an email server.”
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Smtp tls port Report an error
“Your client must support TLS security via port 587.”
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Smtp message tracking Report an error
“Where 61eec2dc16ae8b627a4b87e7 will be a unique ID and you can track it back this to our Messages API.”
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Smtp validation errors Report an error
“We use the same validation mechanisms for SMTP relay, which returns a string of concatenated validation errors with a 450 SMTP code”
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Smtp custom tags Report an error
“You can send a maximum of 5 tags.”
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Smtp no legacy protocols Report an error
“We only support TLS security via 587 port and do not have plans to support older/unsecure protocols for SMTP”
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Smtp verified from required Report an error
“FROM email domain must be verified”
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Smtp subject required Report an error
“A subject is required”
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Smtp headers dropped Report an error
“All custom headers, apart from the ones mentioned in Additional features, will be dropped”
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Smtp tracking html readjustment Report an error
“HTML source might be readjusted if click or open tracking is enabled”
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Smtp API only features Report an error
“Additional features like advanced personalization or templates are only supported via our Email API”
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Smtp attachment types Report an error
“We only support attachments of the file types as defined in Email API”
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Smtp rate limits Report an error
“There are Rate limits applied to SMTP relay based on IP address and these tend to be lower than available through our API”
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Smtp connection limit Report an error
“SMTP Relay has a single connection transaction limit set at 5. To send bulk emails use our Bulk Email API”
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Smtp daily quota Report an error
“Daily request quota applies to each individual message sent through our SMTP relay service.”
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Smtp no desktop clients Report an error
“We do not support desktop email clients such as Apple Mail, Outlook, Thunderbird and similar applications.”
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Smtp enable location Report an error
“Enable SMTP on your Domain screen and input the details into your SMTP client.”
Scores citing this record
- The Agency Lead Sending API, SMTP & developer experience
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- The Shop Operator Sending API, SMTP & developer experience
- The Shop Operator Message data, retention & security
- The Platform Engineer Sending API, SMTP & developer experience
- The Platform Engineer Message data, retention & security
- The SaaS Developer Sending API, SMTP & developer experience
- The SaaS Developer Message data, retention & security
- The Skeptic Sending API, SMTP & developer experience
- The Skeptic Message data, retention & security