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Transactional vs. Broadcast | Postmark Support Center

Transactional vs. Broadcast


Transactional or Broadcast

Or use this chart! 🥳

There are some message types (in green) that blur the line between Transactional and Broadcast. In those cases, you'll want to see what other characteristics they have that categorize them one way or the other.

Characteristic

Recommendation

Examples

human manually sends/schedules the message

Broadcast

event updates, legal notices, product updates, promotional marketing

content is different each time the message is sent

Broadcast

activity digests, event updates, legal notices, newsletters, product updates, promotional marketing

message is sent to a stored list of recipients

Broadcast

activity digests, event updates, legal notices, newsletters, product updates, promotional marketing

human being manually creates the content

Broadcast

legal notices, newsletters, product updates, promotional marketing

recipients can choose not to receive these messages

Broadcast

activity digests, newsletters, product updates, promotional marketing

message is sent to more than recipient at once

Broadcast

activity digests, legal notices, newsletters, product updates, promotional marketing

you're expecting lower engagement (<20% opens)

Broadcast

activity digests, legal notices, newsletters, product updates, promotional marketing

message is an update that requires urgent attention or action from the recipient

Transactional

billing updates, event updates, legal notices

you're legally, practically, or contractually required to send the message

Transactional

account creation confirmations, billing updates, contact form auto-replies, email verifications, legal notices, purchase confirmations

message is sent automatically with no human intervention

Transactional

account creation confirmations, activity digests, billing updates, contact form auto-replies, email verifications, purchase confirmations

message is sent immediately after the recipient performs an action

Transactional

account creation confirmations, billing updates, contact form auto-replies, email verifications, purchase confirmations

message is sent as a result of filling out an online form

Transactional

account creation confirmations, contact form auto-replies, email verifications, support replies

the message is extremely time-sensitive (must be delivered within 10 minutes or less)

Transactional

account creation confirmations, contact form auto-replies, email verifications, purchase confirmations

Last updated March 27th, 2025

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